{"html": "
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                            <span class=\"title\">General Constraints&nbsp;<span class=\"op-menu-arrow\"></span></span>
                        </a>
                
                        <span class=\"op-menu-spinner spinner\">&nbsp;</span>
                    </span>
                

                <ul class=\"list-group list-group-flush submenu collapse show\" id=\"search-submenu-obs_general\">

                <!-- all div labels have level 2 submenu to list params-->
                
                
                     
                
                      
                        

                        

                            
                            
                                <li class=\"list-group-item py-0 ps-0\">
                                    <a data-label=\"
                                        
                                            Planet
                                        
                                      \" data-qualifiedlabel=\"
                                        
                                            Planet [General]
                                        
                                      \"
                                      data-dispunit=\"\"
                                      data-defaultunit=\"\"
                                      data-availunits=\"\"
                                      data-slug=\"planet\" class=\"op-search-param\" href=\"#\">
                                        <span class=\"op-menu-item\">
                                            <span class=\"op-search-param-checkmark\">
                                                <i class=\"fa fa-check\"></i>
                                            </span>
                                            
                                                
                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The planet associated with a given observation. For spacecraft, this corresponds to the phase of the mission, generally indicating which planet the spacecraft was near at the time of the observation. For Hubble, this corresponds to the planet targeted by the observation, if any. To perform more specific searches for observations that have a particular planet in the field of view, use Intended Target Name or Surface Geometry.\"></i>
                                                
                                                <span>Planet</span>
                                            
                                            
                                        </span>
                                    </a>
                                </li>
                            
                                <li class=\"list-group-item py-0 ps-0\">
                                    <a data-label=\"
                                        
                                            Intended Target Name
                                        
                                      \" data-qualifiedlabel=\"
                                        
                                            Intended Target Name [General]
                                        
                                      \"
                                      data-dispunit=\"\"
                                      data-defaultunit=\"\"
                                      data-availunits=\"\"
                                      data-slug=\"target\" class=\"op-search-param\" href=\"#\">
                                        <span class=\"op-menu-item\">
                                            <span class=\"op-search-param-checkmark\">
                                                <i class=\"fa fa-check\"></i>
                                            </span>
                                            
                                                
                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The specific target(s) representing the observer&#x27;s intentions. These targets may not actually be in the field of view, and there may be many other targets in the field of view. To search for ANY body in the field of view (but only for some instruments), select Surface Geometry Target Selector under Surface Geometry Constraints in the left menu. To search for observations containing rings, use the Ring Geometry Constraints menu.\"></i>
                                                
                                                <span>Intended Target Name</span>
                                            
                                            
                                        </span>
                                    </a>
                                </li>
                            
                                <li class=\"list-group-item py-0 ps-0\">
                                    <a data-label=\"
                                        
                                            Nominal Target Class
                                        
                                      \" data-qualifiedlabel=\"
                                        
                                            Nominal Target Class [General]
                                        
                                      \"
                                      data-dispunit=\"\"
                                      data-defaultunit=\"\"
                                      data-availunits=\"\"
                                      data-slug=\"targetclass\" class=\"op-search-param\" href=\"#\">
                                        <span class=\"op-menu-item\">
                                            <span class=\"op-search-param-checkmark\">
                                                <i class=\"fa fa-check\"></i>
                                            </span>
                                            
                                                
                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The general class(es) of object(s) indicated by the Intended Target Name(s). Possible values include Planet, Regular Satellite, Irregular Satellite, Ring, Sky, Calibration, and Other.\"></i>
                                                
                                                <span>Nominal Target Class</span>
                                            
                                            
                                        </span>
                                    </a>
                                </li>
                            
                                <li class=\"list-group-item py-0 ps-0\">
                                    <a data-label=\"
                                        
                                            Mission
                                        
                                      \" data-qualifiedlabel=\"
                                        
                                            Mission [General]
                                        
                                      \"
                                      data-dispunit=\"\"
                                      data-defaultunit=\"\"
                                      data-availunits=\"\"
                                      data-slug=\"mission\" class=\"op-search-param\" href=\"#\">
                                        <span class=\"op-menu-item\">
                                            <span class=\"op-search-param-checkmark\">
                                                <i class=\"fa fa-check\"></i>
                                            </span>
                                            
                                                
                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The major planetary mission or project used to take the observation. A mission may be associated with more than one spacecraft, such as Voyager 1 and 2. To search for a specific spacecraft or observatory, use Instrument Host Name. See Help/About for a discussion of the missions supported by OPUS.\"></i>
                                                
                                                <span>Mission</span>
                                            
                                            
                                        </span>
                                    </a>
                                </li>
                            
                                <li class=\"list-group-item py-0 ps-0\">
                                    <a data-label=\"
                                        
                                            Instrument Host Name
                                        
                                      \" data-qualifiedlabel=\"
                                        
                                            Instrument Host Name [General]
                                        
                                      \"
                                      data-dispunit=\"\"
                                      data-defaultunit=\"\"
                                      data-availunits=\"\"
                                      data-slug=\"insthost\" class=\"op-search-param\" href=\"#\">
                                        <span class=\"op-menu-item\">
                                            <span class=\"op-search-param-checkmark\">
                                                <i class=\"fa fa-check\"></i>
                                            </span>
                                            
                                                
                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The name of the spacecraft, satellite, or ground-based observatory/telescope that took the observation. See Help/About for a discussion of the instrument hosts supported by OPUS.\"></i>
                                                
                                                <span>Instrument Host Name</span>
                                            
                                            
                                        </span>
                                    </a>
                                </li>
                            
                                <li class=\"list-group-item py-0 ps-0\">
                                    <a data-label=\"
                                        
                                            Instrument Name
                                        
                                      \" data-qualifiedlabel=\"
                                        
                                            Instrument Name [General]
                                        
                                      \"
                                      data-dispunit=\"\"
                                      data-defaultunit=\"\"
                                      data-availunits=\"\"
                                      data-slug=\"instrument\" class=\"op-search-param\" href=\"#\">
                                        <span class=\"op-menu-item\">
                                            <span class=\"op-search-param-checkmark\">
                                                <i class=\"fa fa-check\"></i>
                                            </span>
                                            
                                                
                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The specific instrument that was used to take the observation. See Help/About for a discussion of the instruments supported by OPUS.\"></i>
                                                
                                                <span>Instrument Name</span>
                                            
                                            
                                        </span>
                                    </a>
                                </li>
                            
                                <li class=\"list-group-item py-0 ps-0\">
                                    <a data-label=\"
                                        
                                            Observation Type
                                        
                                      \" data-qualifiedlabel=\"
                                        
                                            Observation Type [General]
                                        
                                      \"
                                      data-dispunit=\"\"
                                      data-defaultunit=\"\"
                                      data-availunits=\"\"
                                      data-slug=\"observationtype\" class=\"op-search-param\" href=\"#\">
                                        <span class=\"op-menu-item\">
                                            <span class=\"op-search-param-checkmark\">
                                                <i class=\"fa fa-check\"></i>
                                            </span>
                                            
                                                
                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The type of data provided by this observation. Possible values include Image (two spatial axes with intensity), Spectrum (zero or one spatial axes with full spectral data at each position), Spectral Image (two spatial axes with partial spectral data at each position, usually formed with a prism or grism), Spectral Cube (two spatial axes with full spectral data at each position), Time Series (one time axis with non-spectral data such as intensity at each time), Spectral Time Series (one time axis with full spectral data at each time), and Occultation Profile (one spatial axis with optical depth at each position).\"></i>
                                                
                                                <span>Observation Type</span>
                                            
                                            
                                        </span>
                                    </a>
                                </li>
                            
                                <li class=\"list-group-item py-0 ps-0\">
                                    <a data-label=\"
                                        
                                            Observation Time
                                        
                                      \" data-qualifiedlabel=\"
                                        
                                            Observation Time [General]
                                        
                                      \"
                                      data-dispunit=\"YMDhms\"
                                      data-defaultunit=\"ymdhms\"
                                      data-availunits=\"{&#x27;ymdhms&#x27;: &#x27;YMDhms&#x27;, &#x27;ydhms&#x27;: &#x27;YDhms&#x27;, &#x27;jd&#x27;: &#x27;JD&#x27;, &#x27;jed&#x27;: &#x27;JED&#x27;, &#x27;mjd&#x27;: &#x27;MJD&#x27;, &#x27;mjed&#x27;: &#x27;MJED&#x27;, &#x27;et&#x27;: &#x27;SPICE ET&#x27;}\"
                                      data-slug=\"time\" class=\"op-search-param\" href=\"#\">
                                        <span class=\"op-menu-item\">
                                            <span class=\"op-search-param-checkmark\">
                                                <i class=\"fa fa-check\"></i>
                                            </span>
                                            
                                                
                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The time range during which an observation was performed. For compound observations such as spectral cubes or time series, or instruments with multiple detectors like Cassini VIMS, this is the range covered by the entire observation, and may be much longer than the times of the individual component observations. All human activities associated with the observation are considered; for example, for radio occultations the start time is when the first photons leave the spacecraft and the end time is when the last photons arrive at the detector on Earth. Although many formats are supported, the standard is YYYY-MM-DD[Thh:mm:ss.sss]. Both the start and stop time are available as a range, and the search can be made more specific using the any/all/only modifiers. See Help/FAQ for more information.\"></i>
                                                
                                                <span>Observation Time</span>
                                            
                                            
                                        </span>
                                    </a>
                                </li>
                            
                                <li class=\"list-group-item py-0 ps-0\">
                                    <a data-label=\"
                                        
                                            Observation Duration
                                        
                                      \" data-qualifiedlabel=\"
                                        
                                            Observation Duration [General]
                                        
                                      \"
                                      data-dispunit=\"secs\"
                                      data-defaultunit=\"seconds\"
                                      data-availunits=\"{&#x27;seconds&#x27;: &#x27;secs&#x27;, &#x27;microseconds&#x27;: &#x27;usecs&#x27;, &#x27;milliseconds&#x27;: &#x27;msecs&#x27;, &#x27;minutes&#x27;: &#x27;minutes&#x27;, &#x27;hours&#x27;: &#x27;hours&#x27;, &#x27;days&#x27;: &#x27;days&#x27;}\"
                                      data-slug=\"observationduration\" class=\"op-search-param\" href=\"#\">
                                        <span class=\"op-menu-item\">
                                            <span class=\"op-search-param-checkmark\">
                                                <i class=\"fa fa-check\"></i>
                                            </span>
                                            
                                                
                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The time interval during which an observation was performed, equal to the difference between the observation&#x27;s start time and stop time.\"></i>
                                                
                                                <span>Observation Duration</span>
                                            
                                            
                                        </span>
                                    </a>
                                </li>
                            
                                <li class=\"list-group-item py-0 ps-0\">
                                    <a data-label=\"
                                        
                                            Measurement Quantity
                                        
                                      \" data-qualifiedlabel=\"
                                        
                                            Measurement Quantity [General]
                                        
                                      \"
                                      data-dispunit=\"\"
                                      data-defaultunit=\"\"
                                      data-availunits=\"\"
                                      data-slug=\"quantity\" class=\"op-search-param\" href=\"#\">
                                        <span class=\"op-menu-item\">
                                            <span class=\"op-search-param-checkmark\">
                                                <i class=\"fa fa-check\"></i>
                                            </span>
                                            
                                                
                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The type of data being measured. Possible values include Reflectivity (the amount of sunlight reflected by a target), Thermal Emission (the electromagnetic radiation from an object due to its temperature), Optical Depth (the amount of light blocked by an object), and Emission (the non-thermal electromagnetic radiation from an object).\"></i>
                                                
                                                <span>Measurement Quantity</span>
                                            
                                            
                                        </span>
                                    </a>
                                </li>
                            
                                <li class=\"list-group-item py-0 ps-0\">
                                    <a data-label=\"
                                        
                                            Right Ascension
                                        
                                      \" data-qualifiedlabel=\"
                                        
                                            Right Ascension [General]
                                        
                                      \"
                                      data-dispunit=\"degrees\"
                                      data-defaultunit=\"degrees\"
                                      data-availunits=\"{&#x27;degrees&#x27;: &#x27;degrees&#x27;, &#x27;dms&#x27;: &#x27;DMS&#x27;, &#x27;hours&#x27;: &#x27;hours&#x27;, &#x27;hms&#x27;: &#x27;HMS&#x27;, &#x27;radians&#x27;: &#x27;radians&#x27;}\"
                                      data-slug=\"rightasc\" class=\"op-search-param\" href=\"#\">
                                        <span class=\"op-menu-item\">
                                            <span class=\"op-search-param-checkmark\">
                                                <i class=\"fa fa-check\"></i>
                                            </span>
                                            
                                                
                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"Used with Declination to specify a point on the sky. Right ascension is the length of the arc, in degrees, along the celestial equator between the vernal equinox and the point where the hour circle through the point in question intersects the celestial equator, measured eastward in J2000 coordinates. Note that right ascension wraps around from 360 to 0 and thus both minimum and maximum values must be specified for a valid search. OPUS will also allow you to search from a larger number to a smaller number, implying the right ascension must wrap around. Both the minimum and maximum right ascension are stored for each observation and the search can be made more specific using the any/all/only modifiers. See Help/FAQ for more information.\"></i>
                                                
                                                <span>Right Ascension</span>
                                            
                                            
                                        </span>
                                    </a>
                                </li>
                            
                                <li class=\"list-group-item py-0 ps-0\">
                                    <a data-label=\"
                                        
                                            Declination
                                        
                                      \" data-qualifiedlabel=\"
                                        
                                            Declination [General]
                                        
                                      \"
                                      data-dispunit=\"degrees\"
                                      data-defaultunit=\"degrees\"
                                      data-availunits=\"{&#x27;degrees&#x27;: &#x27;degrees&#x27;, &#x27;dms&#x27;: &#x27;DMS&#x27;, &#x27;radians&#x27;: &#x27;radians&#x27;}\"
                                      data-slug=\"declination\" class=\"op-search-param\" href=\"#\">
                                        <span class=\"op-menu-item\">
                                            <span class=\"op-search-param-checkmark\">
                                                <i class=\"fa fa-check\"></i>
                                            </span>
                                            
                                                
                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"Used with Right Ascension to specify a point on the sky. Declination is the length of the angle measured from the celestial equator to the point in question, measured northward in J2000 coordinates. Both the minimum and maximum declination are stored for each observation and the search can be made more specific using the any/all/only modifiers. See Help/FAQ for more information.\"></i>
                                                
                                                <span>Declination</span>
                                            
                                            
                                        </span>
                                    </a>
                                </li>
                            
                        
                     
                
                     
                
                     
                
                     
                
                     
                
                     
                
                     
                 
            </ul>
        </li>
        
            <li class=\"list-group-item py-0 op-search-menu-category\">
                
                        <a href=\"#search-submenu-obs_pds\" data-bs-toggle=\"collapse\" aria-expanded=\"false\" class=\"dropdown-toggle py-2 op-submenu-category collapsed\" data-cat=\"obs_pds\">
                            <span class=\"title\">PDS Constraints&nbsp;<span class=\"op-menu-arrow\"></span></span>
                        </a>
                

                <ul class=\"list-group list-group-flush submenu collapse \" id=\"search-submenu-obs_pds\">

                <!-- all div labels have level 2 submenu to list params-->
                
                
                     
                
                     
                
                      
                        

                        

                            
                            
                                <li class=\"list-group-item py-0 ps-0\">
                                    <a data-label=\"
                                        
                                            Bundle/Volume ID
                                        
                                      \" data-qualifiedlabel=\"
                                        
                                            Bundle/Volume ID [PDS]
                                        
                                      \"
                                      data-dispunit=\"\"
                                      data-defaultunit=\"\"
                                      data-availunits=\"\"
                                      data-slug=\"bundleid\" class=\"op-search-param\" href=\"#\">
                                        <span class=\"op-menu-item\">
                                            <span class=\"op-search-param-checkmark\">
                                                <i class=\"fa fa-check\"></i>
                                            </span>
                                            
                                                
                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The PDS4 bundle or PDS3 volume containing the observation. PDS4 bundles are semantically-meaningful constructs used to group similar observations; the bundle name is descriptive and part of the LID for each included data product. PDS3 volumes are artificial constructs used to group consecutive observations into manageable chunks. They are formatted as MMIII_NNNN, where MMIII is an abbreviation for the mission and instrument (e.g. COISS for Cassini Orbiter ISS) and NNNN is a four-digit volume number. Hubble volumes have 5-digit volume numbers and are formatted as HSTIN_NNNN. See Bundles/Volumes under Help for the list of bundles and volumes available in OPUS.\"></i>
                                                
                                                <span>Bundle/Volume ID</span>
                                            
                                            
                                        </span>
                                    </a>
                                </li>
                            
                                <li class=\"list-group-item py-0 ps-0\">
                                    <a data-label=\"
                                        
                                            PDS3 Data Set ID
                                        
                                      \" data-qualifiedlabel=\"
                                        
                                            PDS3 Data Set ID [PDS]
                                        
                                      \"
                                      data-dispunit=\"\"
                                      data-defaultunit=\"\"
                                      data-availunits=\"\"
                                      data-slug=\"datasetid\" class=\"op-search-param\" href=\"#\">
                                        <span class=\"op-menu-item\">
                                            <span class=\"op-search-param-checkmark\">
                                                <i class=\"fa fa-check\"></i>
                                            </span>
                                            
                                                
                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"A string assigned by the PDS describing a PDS3 data set. Data sets are often aggregations of multiple volumes. A Data Set ID usually encodes, at a minimum, the mission, instrument, and version number of the data as provided by the instrument team.\"></i>
                                                
                                                <span>PDS3 Data Set ID</span>
                                            
                                            
                                        </span>
                                    </a>
                                </li>
                            
                                <li class=\"list-group-item py-0 ps-0\">
                                    <a data-label=\"
                                        
                                            PDS3 Product ID
                                        
                                      \" data-qualifiedlabel=\"
                                        
                                            PDS3 Product ID [PDS]
                                        
                                      \"
                                      data-dispunit=\"\"
                                      data-defaultunit=\"\"
                                      data-availunits=\"\"
                                      data-slug=\"productid\" class=\"op-search-param\" href=\"#\">
                                        <span class=\"op-menu-item\">
                                            <span class=\"op-search-param-checkmark\">
                                                <i class=\"fa fa-check\"></i>
                                            </span>
                                            
                                                
                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"A permanent identifier assigned to a PDS3 data product by the PDS that is unique within its data set.\"></i>
                                                
                                                <span>PDS3 Product ID</span>
                                            
                                            
                                        </span>
                                    </a>
                                </li>
                            
                                <li class=\"list-group-item py-0 ps-0\">
                                    <a data-label=\"
                                        
                                            Primary Product LID
                                        
                                      \" data-qualifiedlabel=\"
                                        
                                            Primary Product LID [PDS]
                                        
                                      \"
                                      data-dispunit=\"\"
                                      data-defaultunit=\"\"
                                      data-availunits=\"\"
                                      data-slug=\"primarylid\" class=\"op-search-param\" href=\"#\">
                                        <span class=\"op-menu-item\">
                                            <span class=\"op-search-param-checkmark\">
                                                <i class=\"fa fa-check\"></i>
                                            </span>
                                            
                                                
                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"A Logical IDentifier assigned to a PDS4 data product. While each individual data product has its own LID, the LID used here is the one identified by OPUS as the primary data product. If searching by LID, it may be most productive to perform a partial string search on the LID prefix.\"></i>
                                                
                                                <span>Primary Product LID</span>
                                            
                                            
                                        </span>
                                    </a>
                                </li>
                            
                                <li class=\"list-group-item py-0 ps-0\">
                                    <a data-label=\"
                                        
                                            Product Creation Time
                                        
                                      \" data-qualifiedlabel=\"
                                        
                                            Product Creation Time [PDS]
                                        
                                      \"
                                      data-dispunit=\"YMDhms\"
                                      data-defaultunit=\"ymdhms\"
                                      data-availunits=\"{&#x27;ymdhms&#x27;: &#x27;YMDhms&#x27;, &#x27;ydhms&#x27;: &#x27;YDhms&#x27;, &#x27;jd&#x27;: &#x27;JD&#x27;, &#x27;jed&#x27;: &#x27;JED&#x27;, &#x27;mjd&#x27;: &#x27;MJD&#x27;, &#x27;mjed&#x27;: &#x27;MJED&#x27;, &#x27;et&#x27;: &#x27;SPICE ET&#x27;}\"
                                      data-slug=\"productcreationtime\" class=\"op-search-param\" href=\"#\">
                                        <span class=\"op-menu-item\">
                                            <span class=\"op-search-param-checkmark\">
                                                <i class=\"fa fa-check\"></i>
                                            </span>
                                            
                                                
                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The approximate date and time when the PDS data product was created for inclusion in the archive. Although many formats are supported, the standard is YYYY-MM-DD[Thh:mm:ss.sss].\"></i>
                                                
                                                <span>Product Creation Time</span>
                                            
                                            
                                        </span>
                                    </a>
                                </li>
                            
                                <li class=\"list-group-item py-0 ps-0\">
                                    <a data-label=\"
                                        
                                            Primary File Spec
                                        
                                      \" data-qualifiedlabel=\"
                                        
                                            Primary File Spec [PDS]
                                        
                                      \"
                                      data-dispunit=\"\"
                                      data-defaultunit=\"\"
                                      data-availunits=\"\"
                                      data-slug=\"primaryfilespec\" class=\"op-search-param\" href=\"#\">
                                        <span class=\"op-menu-item\">
                                            <span class=\"op-search-param-checkmark\">
                                                <i class=\"fa fa-check\"></i>
                                            </span>
                                            
                                                
                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The full primary data product filename, including the path, relative to its containing bundle/volume in the PDS archive.\"></i>
                                                
                                                <span>Primary File Spec</span>
                                            
                                            
                                        </span>
                                    </a>
                                </li>
                            
                                <li class=\"list-group-item py-0 ps-0\">
                                    <a data-label=\"
                                        
                                            OPUS ID
                                        
                                      \" data-qualifiedlabel=\"
                                        
                                            OPUS ID [PDS]
                                        
                                      \"
                                      data-dispunit=\"\"
                                      data-defaultunit=\"\"
                                      data-availunits=\"\"
                                      data-slug=\"opusid\" class=\"op-search-param\" href=\"#\">
                                        <span class=\"op-menu-item\">
                                            <span class=\"op-search-param-checkmark\">
                                                <i class=\"fa fa-check\"></i>
                                            </span>
                                            
                                                
                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"A unique ID assigned to an observation by the Ring-Moon Systems Node of the PDS. The OPUS ID is useful for referencing specific observations in a mission-independent manner but should never be used outside of OPUS. To reference an observation outside of OPUS, use the Volume ID, Product ID, and/or Primary File Spec. Note: The format of the OPUS ID is not guaranteed to remain the same over time.\"></i>
                                                
                                                <span>OPUS ID</span>
                                            
                                            
                                        </span>
                                    </a>
                                </li>
                            
                                <li class=\"list-group-item py-0 ps-0\">
                                    <a data-label=\"
                                        
                                            Note
                                        
                                      \" data-qualifiedlabel=\"
                                        
                                            Note [PDS]
                                        
                                      \"
                                      data-dispunit=\"\"
                                      data-defaultunit=\"\"
                                      data-availunits=\"\"
                                      data-slug=\"note\" class=\"op-search-param\" href=\"#\">
                                        <span class=\"op-menu-item\">
                                            <span class=\"op-search-param-checkmark\">
                                                <i class=\"fa fa-check\"></i>
                                            </span>
                                            
                                                
                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"Miscellaneous notes or comments about an observation, such as why the observation was taken or known problems with the data.\"></i>
                                                
                                                <span>Note</span>
                                            
                                            
                                        </span>
                                    </a>
                                </li>
                            
                        
                     
                
                     
                
                     
                
                     
                
                     
                
                     
                 
            </ul>
        </li>
        
            <li class=\"list-group-item py-0 op-search-menu-category\">
                
                        <a href=\"#search-submenu-obs_type_image\" data-bs-toggle=\"collapse\" aria-expanded=\"false\" class=\"dropdown-toggle py-2 op-submenu-category collapsed\" data-cat=\"obs_type_image\">
                            <span class=\"title\">Image Constraints&nbsp;<span class=\"op-menu-arrow\"></span></span>
                        </a>
                

                <ul class=\"list-group list-group-flush submenu collapse \" id=\"search-submenu-obs_type_image\">

                <!-- all div labels have level 2 submenu to list params-->
                
                
                     
                
                     
                
                     
                
                      
                        

                        

                            
                            
                                <li class=\"list-group-item py-0 ps-0\">
                                    <a data-label=\"
                                        
                                            Exposure Duration
                                        
                                      \" data-qualifiedlabel=\"
                                        
                                            Exposure Duration [Image]
                                        
                                      \"
                                      data-dispunit=\"secs\"
                                      data-defaultunit=\"seconds\"
                                      data-availunits=\"{&#x27;seconds&#x27;: &#x27;secs&#x27;, &#x27;microseconds&#x27;: &#x27;usecs&#x27;, &#x27;milliseconds&#x27;: &#x27;msecs&#x27;, &#x27;minutes&#x27;: &#x27;minutes&#x27;, &#x27;hours&#x27;: &#x27;hours&#x27;, &#x27;days&#x27;: &#x27;days&#x27;}\"
                                      data-slug=\"duration\" class=\"op-search-param\" href=\"#\">
                                        <span class=\"op-menu-item\">
                                            <span class=\"op-search-param-checkmark\">
                                                <i class=\"fa fa-check\"></i>
                                            </span>
                                            
                                                
                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The time interval between the opening and closing of an instrument aperture (such as a camera shutter). For most instruments this is the same as Observation Duration. For Cassini UVIS this is the integration duration. For Cassini VIMS this is the exposure duration for the given detector.\"></i>
                                                
                                                <span>Exposure Duration</span>
                                            
                                            
                                        </span>
                                    </a>
                                </li>
                            
                                <li class=\"list-group-item py-0 ps-0\">
                                    <a data-label=\"
                                        
                                            Greater Size in Pixels
                                        
                                      \" data-qualifiedlabel=\"
                                        
                                            Greater Size in Pixels [Image]
                                        
                                      \"
                                      data-dispunit=\"\"
                                      data-defaultunit=\"\"
                                      data-availunits=\"\"
                                      data-slug=\"greaterpixelsize\" class=\"op-search-param\" href=\"#\">
                                        <span class=\"op-menu-item\">
                                            <span class=\"op-search-param-checkmark\">
                                                <i class=\"fa fa-check\"></i>
                                            </span>
                                            
                                                
                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"For an observation that can be represented as a 2-D array of pixels, this is the number of pixels along the longer of the two axes.\"></i>
                                                
                                                <span>Greater Size in Pixels</span>
                                            
                                            
                                        </span>
                                    </a>
                                </li>
                            
                                <li class=\"list-group-item py-0 ps-0\">
                                    <a data-label=\"
                                        
                                            Lesser Size in Pixels
                                        
                                      \" data-qualifiedlabel=\"
                                        
                                            Lesser Size in Pixels [Image]
                                        
                                      \"
                                      data-dispunit=\"\"
                                      data-defaultunit=\"\"
                                      data-availunits=\"\"
                                      data-slug=\"lesserpixelsize\" class=\"op-search-param\" href=\"#\">
                                        <span class=\"op-menu-item\">
                                            <span class=\"op-search-param-checkmark\">
                                                <i class=\"fa fa-check\"></i>
                                            </span>
                                            
                                                
                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"For an observation that can be represented as a 2-D array of pixels, this is the number of pixels along the shorter of the two axes.\"></i>
                                                
                                                <span>Lesser Size in Pixels</span>
                                            
                                            
                                        </span>
                                    </a>
                                </li>
                            
                                <li class=\"list-group-item py-0 ps-0\">
                                    <a data-label=\"
                                        
                                            Intensity Levels
                                        
                                      \" data-qualifiedlabel=\"
                                        
                                            Intensity Levels [Image]
                                        
                                      \"
                                      data-dispunit=\"\"
                                      data-defaultunit=\"\"
                                      data-availunits=\"\"
                                      data-slug=\"levels\" class=\"op-search-param\" href=\"#\">
                                        <span class=\"op-menu-item\">
                                            <span class=\"op-search-param-checkmark\">
                                                <i class=\"fa fa-check\"></i>
                                            </span>
                                            
                                                
                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The number of discrete values that can appear in a single data point. This is a property of the instrument and does not represent the actual contents of the observation. For example, a camera with 12-bit pixels will support 4096 levels.\"></i>
                                                
                                                <span>Intensity Levels</span>
                                            
                                            
                                        </span>
                                    </a>
                                </li>
                            
                                <li class=\"list-group-item py-0 ps-0\">
                                    <a data-label=\"
                                        
                                            Image Type
                                        
                                      \" data-qualifiedlabel=\"
                                        
                                            Image Type [Image]
                                        
                                      \"
                                      data-dispunit=\"\"
                                      data-defaultunit=\"\"
                                      data-availunits=\"\"
                                      data-slug=\"imagetype\" class=\"op-search-param\" href=\"#\">
                                        <span class=\"op-menu-item\">
                                            <span class=\"op-search-param-checkmark\">
                                                <i class=\"fa fa-check\"></i>
                                            </span>
                                            
                                                
                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The type of camera used. In a Frame camera, all pixels are exposed simultaneously. In a Pushbroom camera, the image is obtained by sweeping a single line of pixels across the target. In a Raster Scan camera, the image is constructed by repeatedly sweeping a single pixel across a field of view.\"></i>
                                                
                                                <span>Image Type</span>
                                            
                                            
                                        </span>
                                    </a>
                                </li>
                            
                        
                     
                
                     
                
                     
                
                     
                
                     
                 
            </ul>
        </li>
        
            <li class=\"list-group-item py-0 op-search-menu-category\">
                
                        <a href=\"#search-submenu-obs_wavelength\" data-bs-toggle=\"collapse\" aria-expanded=\"false\" class=\"dropdown-toggle py-2 op-submenu-category collapsed\" data-cat=\"obs_wavelength\">
                            <span class=\"title\">Wavelength Constraints&nbsp;<span class=\"op-menu-arrow\"></span></span>
                        </a>
                

                <ul class=\"list-group list-group-flush submenu collapse \" id=\"search-submenu-obs_wavelength\">

                <!-- all div labels have level 2 submenu to list params-->
                
                
                     
                
                     
                
                     
                
                     
                
                      
                        

                        

                            
                            
                                <li class=\"list-group-item py-0 ps-0\">
                                    <a data-label=\"
                                        
                                            Wavelength
                                        
                                      \" data-qualifiedlabel=\"
                                        
                                            Wavelength [Wavelength]
                                        
                                      \"
                                      data-dispunit=\"microns\"
                                      data-defaultunit=\"microns\"
                                      data-availunits=\"{&#x27;microns&#x27;: &#x27;microns&#x27;, &#x27;angstroms&#x27;: &#x27;angstroms&#x27;, &#x27;nm&#x27;: &#x27;nm&#x27;, &#x27;cm&#x27;: &#x27;cm&#x27;}\"
                                      data-slug=\"wavelength\" class=\"op-search-param\" href=\"#\">
                                        <span class=\"op-menu-item\">
                                            <span class=\"op-search-param-checkmark\">
                                                <i class=\"fa fa-check\"></i>
                                            </span>
                                            
                                                
                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The range of wavelengths at which an observation was made. For spectrographic instruments, this is the actual range available. For most imaging instruments, this is the full transmission bandwidth. For Cassini ISS, this is based on the FWHM around the center wavelength. Some instruments natively use wavelength and others natively use wavenumber. OPUS supports both quantities for all instruments and searches over equivalent ranges of wavelength and wavenumber will produce identical results. Both the minimum and maximum wavelengths are stored for each observation and the search can be made more specific using the any/all/only modifiers. See Help/FAQ for more information.\"></i>
                                                
                                                <span>Wavelength</span>
                                            
                                            
                                        </span>
                                    </a>
                                </li>
                            
                                <li class=\"list-group-item py-0 ps-0\">
                                    <a data-label=\"
                                        
                                            Wavelength Resolution
                                        
                                      \" data-qualifiedlabel=\"
                                        
                                            Wavelength Resolution [Wavelength]
                                        
                                      \"
                                      data-dispunit=\"microns/pixel\"
                                      data-defaultunit=\"microns_pixel\"
                                      data-availunits=\"{&#x27;microns_pixel&#x27;: &#x27;microns/pixel&#x27;, &#x27;angstroms_pixel&#x27;: &#x27;angstroms/pixel&#x27;, &#x27;nm_pixel&#x27;: &#x27;nm/pixel&#x27;, &#x27;cm_pixel&#x27;: &#x27;cm/pixel&#x27;}\"
                                      data-slug=\"waveres\" class=\"op-search-param\" href=\"#\">
                                        <span class=\"op-menu-item\">
                                            <span class=\"op-search-param-checkmark\">
                                                <i class=\"fa fa-check\"></i>
                                            </span>
                                            
                                                
                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The range of widths of spectral lines that can be reliably detected in an observation, measured in wavelengths. For most non-spectrographic instruments, this is equal to the filter bandpass. For Cassini ISS, it is equal to the FWHM. Both the minimum and maximum wavelength resolutions are stored for each observation and the search can be made more specific using the any/all/only modifiers. See Help/FAQ for more information.\"></i>
                                                
                                                <span>Wavelength Resolution</span>
                                            
                                            
                                        </span>
                                    </a>
                                </li>
                            
                                <li class=\"list-group-item py-0 ps-0\">
                                    <a data-label=\"
                                        
                                            Wavenumber
                                        
                                      \" data-qualifiedlabel=\"
                                        
                                            Wavenumber [Wavelength]
                                        
                                      \"
                                      data-dispunit=\"cm^-1\"
                                      data-defaultunit=\"1_cm\"
                                      data-availunits=\"{&#x27;1_cm&#x27;: &#x27;cm^-1&#x27;, &#x27;1_m&#x27;: &#x27;m^-1&#x27;}\"
                                      data-slug=\"waveno\" class=\"op-search-param\" href=\"#\">
                                        <span class=\"op-menu-item\">
                                            <span class=\"op-search-param-checkmark\">
                                                <i class=\"fa fa-check\"></i>
                                            </span>
                                            
                                                
                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The range of wavenumbers at which an observation was made. The wavenumber is the reciprocal of the wavelength, i.e., the number of waves per unit of length. This quantity is provided to support instruments that measure spectra in uniformly-spaced steps of wavenumber rather than wavelength. Some instruments natively use wavelength and others natively use wavenumber. OPUS supports both quantities for all instruments and searches over equivalent ranges of wavelength and wavenumber will produce identical results. Both the minimum and maximum wavenumbers are stored for each observation and the search can be made more specific using the any/all/only modifiers. See Help/FAQ for more information.\"></i>
                                                
                                                <span>Wavenumber</span>
                                            
                                            
                                        </span>
                                    </a>
                                </li>
                            
                                <li class=\"list-group-item py-0 ps-0\">
                                    <a data-label=\"
                                        
                                            Wavenumber Resolution
                                        
                                      \" data-qualifiedlabel=\"
                                        
                                            Wavenumber Resolution [Wavelength]
                                        
                                      \"
                                      data-dispunit=\"cm^-1/pixel\"
                                      data-defaultunit=\"1_cm_pixel\"
                                      data-availunits=\"{&#x27;1_cm_pixel&#x27;: &#x27;cm^-1/pixel&#x27;, &#x27;1_m_pixel&#x27;: &#x27;m^-1/pixel&#x27;}\"
                                      data-slug=\"wavenores\" class=\"op-search-param\" href=\"#\">
                                        <span class=\"op-menu-item\">
                                            <span class=\"op-search-param-checkmark\">
                                                <i class=\"fa fa-check\"></i>
                                            </span>
                                            
                                                
                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The range of widths of spectral lines that can be reliably detected in an observation, measured in wavenumbers. Both the minimum and maximum wavenumber resolutions are stored for each observation and the search can be made more specific using the any/all/only modifiers. See Help/FAQ for more information.\"></i>
                                                
                                                <span>Wavenumber Resolution</span>
                                            
                                            
                                        </span>
                                    </a>
                                </li>
                            
                                <li class=\"list-group-item py-0 ps-0\">
                                    <a data-label=\"
                                        
                                            Spectral Information Flag
                                        
                                      \" data-qualifiedlabel=\"
                                        
                                            Spectral Information Flag [Wavelength]
                                        
                                      \"
                                      data-dispunit=\"\"
                                      data-defaultunit=\"\"
                                      data-availunits=\"\"
                                      data-slug=\"specflag\" class=\"op-search-param\" href=\"#\">
                                        <span class=\"op-menu-item\">
                                            <span class=\"op-search-param-checkmark\">
                                                <i class=\"fa fa-check\"></i>
                                            </span>
                                            
                                                
                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"A flag indicating whether an observation contains separable information about multiple wavelengths. The flag is Yes for spectrographic instruments and imaging cameras using prisms or grisms as long as there is more than one spectral bin.\"></i>
                                                
                                                <span>Spectral Information Flag</span>
                                            
                                            
                                        </span>
                                    </a>
                                </li>
                            
                                <li class=\"list-group-item py-0 ps-0\">
                                    <a data-label=\"
                                        
                                            Spectrum Size
                                        
                                      \" data-qualifiedlabel=\"
                                        
                                            Spectrum Size [Wavelength]
                                        
                                      \"
                                      data-dispunit=\"\"
                                      data-defaultunit=\"\"
                                      data-availunits=\"\"
                                      data-slug=\"specsize\" class=\"op-search-param\" href=\"#\">
                                        <span class=\"op-menu-item\">
                                            <span class=\"op-search-param-checkmark\">
                                                <i class=\"fa fa-check\"></i>
                                            </span>
                                            
                                                
                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The number of distinct wavelengths or wavelength bins that can be detected in an observation. Null for non-spectrographic instruments not using prisms or grisms.\"></i>
                                                
                                                <span>Spectrum Size</span>
                                            
                                            
                                        </span>
                                    </a>
                                </li>
                            
                                <li class=\"list-group-item py-0 ps-0\">
                                    <a data-label=\"
                                        
                                            Polarization Type
                                        
                                      \" data-qualifiedlabel=\"
                                        
                                            Polarization Type [Wavelength]
                                        
                                      \"
                                      data-dispunit=\"\"
                                      data-defaultunit=\"\"
                                      data-availunits=\"\"
                                      data-slug=\"polarizationtype\" class=\"op-search-param\" href=\"#\">
                                        <span class=\"op-menu-item\">
                                            <span class=\"op-search-param-checkmark\">
                                                <i class=\"fa fa-check\"></i>
                                            </span>
                                            
                                                
                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The type of polarization detected by the instrument. Values are Linear (linear polarization) or None (no polarization filter used).\"></i>
                                                
                                                <span>Polarization Type</span>
                                            
                                            
                                        </span>
                                    </a>
                                </li>
                            
                        
                     
                
                     
                
                     
                
                     
                 
            </ul>
        </li>
        
            <li class=\"list-group-item py-0 op-search-menu-category\">
                
                        <a href=\"#search-submenu-obs_profile\" data-bs-toggle=\"collapse\" aria-expanded=\"false\" class=\"dropdown-toggle py-2 op-submenu-category collapsed\" data-cat=\"obs_profile\">
                            <span class=\"title\">Occultation/Reflectance Profiles Constraints&nbsp;<span class=\"op-menu-arrow\"></span></span>
                        </a>
                

                <ul class=\"list-group list-group-flush submenu collapse \" id=\"search-submenu-obs_profile\">

                <!-- all div labels have level 2 submenu to list params-->
                
                
                     
                
                     
                
                     
                
                     
                
                     
                
                      
                        

                        

                            
                            
                                <li class=\"list-group-item py-0 ps-0\">
                                    <a data-label=\"
                                        
                                            Occultation or Profile Type
                                        
                                      \" data-qualifiedlabel=\"
                                        
                                            Occultation or Profile Type [Occultation/Reflectance Profiles]
                                        
                                      \"
                                      data-dispunit=\"\"
                                      data-defaultunit=\"\"
                                      data-availunits=\"\"
                                      data-slug=\"occtype\" class=\"op-search-param\" href=\"#\">
                                        <span class=\"op-menu-item\">
                                            <span class=\"op-search-param-checkmark\">
                                                <i class=\"fa fa-check\"></i>
                                            </span>
                                            
                                                
                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"An occultation is a measurement in which a source signal passes through a medium before being observed. Radio means the source is an artificially-emitted radio signal. Solar means the source is the Sun. Stellar means the source is a star other than the Sun. A reflectance profile is a measurement in which a source signal is reflected from a surface and a 1-D slice is recorded.\"></i>
                                                
                                                <span>Occultation or Profile Type</span>
                                            
                                            
                                        </span>
                                    </a>
                                </li>
                            
                                <li class=\"list-group-item py-0 ps-0\">
                                    <a data-label=\"
                                        
                                            Occultation Direction
                                        
                                      \" data-qualifiedlabel=\"
                                        
                                            Occultation Direction [Occultation/Reflectance Profiles]
                                        
                                      \"
                                      data-dispunit=\"\"
                                      data-defaultunit=\"\"
                                      data-availunits=\"\"
                                      data-slug=\"occdir\" class=\"op-search-param\" href=\"#\">
                                        <span class=\"op-menu-item\">
                                            <span class=\"op-search-param-checkmark\">
                                                <i class=\"fa fa-check\"></i>
                                            </span>
                                            
                                                
                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"Ingress means that, from the observer&#x27;s point of view, the source moves inward from the periphery toward the center of the medium. Egress means the source moves outward. Both means the source moves both inward and outward within a single observation.\"></i>
                                                
                                                <span>Occultation Direction</span>
                                            
                                            
                                        </span>
                                    </a>
                                </li>
                            
                                <li class=\"list-group-item py-0 ps-0\">
                                    <a data-label=\"
                                        
                                            Body Occultation Flag
                                        
                                      \" data-qualifiedlabel=\"
                                        
                                            Body Occultation Flag [Occultation/Reflectance Profiles]
                                        
                                      \"
                                      data-dispunit=\"\"
                                      data-defaultunit=\"\"
                                      data-availunits=\"\"
                                      data-slug=\"bodyoccflag\" class=\"op-search-param\" href=\"#\">
                                        <span class=\"op-menu-item\">
                                            <span class=\"op-search-param-checkmark\">
                                                <i class=\"fa fa-check\"></i>
                                            </span>
                                            
                                                
                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"A flag indicating whether the source passes behind a any planet or other body as seen by the observer during the observation.\"></i>
                                                
                                                <span>Body Occultation Flag</span>
                                            
                                            
                                        </span>
                                    </a>
                                </li>
                            
                                <li class=\"list-group-item py-0 ps-0\">
                                    <a data-label=\"
                                        
                                            Temporal Sampling Interval
                                        
                                      \" data-qualifiedlabel=\"
                                        
                                            Temporal Sampling Interval [Occultation/Reflectance Profiles]
                                        
                                      \"
                                      data-dispunit=\"secs\"
                                      data-defaultunit=\"seconds\"
                                      data-availunits=\"{&#x27;seconds&#x27;: &#x27;secs&#x27;, &#x27;microseconds&#x27;: &#x27;usecs&#x27;, &#x27;milliseconds&#x27;: &#x27;msecs&#x27;, &#x27;minutes&#x27;: &#x27;minutes&#x27;, &#x27;hours&#x27;: &#x27;hours&#x27;, &#x27;days&#x27;: &#x27;days&#x27;}\"
                                      data-slug=\"occtimesampling\" class=\"op-search-param\" href=\"#\">
                                        <span class=\"op-menu-item\">
                                            <span class=\"op-search-param-checkmark\">
                                                <i class=\"fa fa-check\"></i>
                                            </span>
                                            
                                                
                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The time interval between each sample in the original source observation(s).\"></i>
                                                
                                                <span>Temporal Sampling Interval</span>
                                            
                                            
                                        </span>
                                    </a>
                                </li>
                            
                                <li class=\"list-group-item py-0 ps-0\">
                                    <a data-label=\"
                                        
                                            Data Quality Score
                                        
                                      \" data-qualifiedlabel=\"
                                        
                                            Data Quality Score [Occultation/Reflectance Profiles]
                                        
                                      \"
                                      data-dispunit=\"\"
                                      data-defaultunit=\"\"
                                      data-availunits=\"\"
                                      data-slug=\"occdataquality\" class=\"op-search-param\" href=\"#\">
                                        <span class=\"op-menu-item\">
                                            <span class=\"op-search-param-checkmark\">
                                                <i class=\"fa fa-check\"></i>
                                            </span>
                                            
                                                
                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"A subjective rating of quality of the occultation or reflectance profile.\"></i>
                                                
                                                <span>Data Quality Score</span>
                                            
                                            
                                        </span>
                                    </a>
                                </li>
                            
                                <li class=\"list-group-item py-0 ps-0\">
                                    <a data-label=\"
                                        
                                            Detectable Optical Depth
                                        
                                      \" data-qualifiedlabel=\"
                                        
                                            Detectable Optical Depth [Occultation/Reflectance Profiles]
                                        
                                      \"
                                      data-dispunit=\"\"
                                      data-defaultunit=\"\"
                                      data-availunits=\"\"
                                      data-slug=\"occdepth\" class=\"op-search-param\" href=\"#\">
                                        <span class=\"op-menu-item\">
                                            <span class=\"op-search-param-checkmark\">
                                                <i class=\"fa fa-check\"></i>
                                            </span>
                                            
                                                
                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The range of optical depths detectable within the observation. Negative values indicate the signal was too poor to allow calculation. Both the minimum and maximum optical depth are stored for each observation and the search can be made more specific using the any/all/only modifiers. See Help/FAQ for more information.\"></i>
                                                
                                                <span>Detectable Optical Depth</span>
                                            
                                            
                                        </span>
                                    </a>
                                </li>
                            
                                <li class=\"list-group-item py-0 ps-0\">
                                    <a data-label=\"
                                        
                                            Wavelength Band
                                        
                                      \" data-qualifiedlabel=\"
                                        
                                            Wavelength Band [Occultation/Reflectance Profiles]
                                        
                                      \"
                                      data-dispunit=\"\"
                                      data-defaultunit=\"\"
                                      data-availunits=\"\"
                                      data-slug=\"occwlband\" class=\"op-search-param\" href=\"#\">
                                        <span class=\"op-menu-item\">
                                            <span class=\"op-search-param-checkmark\">
                                                <i class=\"fa fa-check\"></i>
                                            </span>
                                            
                                                
                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The wavelength band at which an observation was made.\"></i>
                                                
                                                <span>Wavelength Band</span>
                                            
                                            
                                        </span>
                                    </a>
                                </li>
                            
                                <li class=\"list-group-item py-0 ps-0\">
                                    <a data-label=\"
                                        
                                            Signal Source Name
                                        
                                      \" data-qualifiedlabel=\"
                                        
                                            Signal Source Name [Occultation/Reflectance Profiles]
                                        
                                      \"
                                      data-dispunit=\"\"
                                      data-defaultunit=\"\"
                                      data-availunits=\"\"
                                      data-slug=\"occsource\" class=\"op-search-param\" href=\"#\">
                                        <span class=\"op-menu-item\">
                                            <span class=\"op-search-param-checkmark\">
                                                <i class=\"fa fa-check\"></i>
                                            </span>
                                            
                                                
                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The name of the star or artificial transmitter that emitted the source signal.\"></i>
                                                
                                                <span>Signal Source Name</span>
                                            
                                            
                                        </span>
                                    </a>
                                </li>
                            
                                <li class=\"list-group-item py-0 ps-0\">
                                    <a data-label=\"
                                        
                                            Receiver Host Name
                                        
                                      \" data-qualifiedlabel=\"
                                        
                                            Receiver Host Name [Occultation/Reflectance Profiles]
                                        
                                      \"
                                      data-dispunit=\"\"
                                      data-defaultunit=\"\"
                                      data-availunits=\"\"
                                      data-slug=\"occreceiverhost\" class=\"op-search-param\" href=\"#\">
                                        <span class=\"op-menu-item\">
                                            <span class=\"op-search-param-checkmark\">
                                                <i class=\"fa fa-check\"></i>
                                            </span>
                                            
                                                
                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The name of the observatory or spacecraft at which the signal was observed.\"></i>
                                                
                                                <span>Receiver Host Name</span>
                                            
                                            
                                        </span>
                                    </a>
                                </li>
                            
                                <li class=\"list-group-item py-0 ps-0\">
                                    <a data-label=\"
                                        
                                            Observed Ring Radius [Ring]
                                        
                                      \" data-qualifiedlabel=\"
                                        
                                            Observed Ring Radius [Ring]
                                        
                                      \"
                                      data-dispunit=\"km\"
                                      data-defaultunit=\"km\"
                                      data-availunits=\"{&#x27;km&#x27;: &#x27;km&#x27;, &#x27;m&#x27;: &#x27;m&#x27;, &#x27;jupiterradii&#x27;: &#x27;Rj (71492)&#x27;, &#x27;saturnradii&#x27;: &#x27;Rs (60330)&#x27;, &#x27;neptuneradii&#x27;: &#x27;Rn (25225)&#x27;, &#x27;uranusradii&#x27;: &#x27;Ru (25559)&#x27;}\"
                                      data-slug=\"RINGGEOringradius\" class=\"op-search-param\" href=\"#\">
                                        <span class=\"op-menu-item\">
                                            <span class=\"op-search-param-checkmark\">
                                                <i class=\"fa fa-check\"></i>
                                            </span>
                                            
                                                
                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The range of distances from the center of the planet to the point where a line of sight intercepts the ring plane in the field of view. Ring intercept points that are obscured by the planet or a moon within the observed field of view are ignored. For observations capturing reflected sunlight (i.e., with wavelengths in the visual or near-infrared), ring intercept points that are shadowed by the planet are also ignored. Both the minimum and maximum distances are stored for each observation and the search can be made more specific using the any/all/only modifiers. See Help/FAQ for more information.\"></i>
                                                
                                                <span>Observed Ring Radius [Ring]</span>
                                            
                                            
                                                <i class=\"fas fa-link op-referred-link op-menu-tooltip\" title=\"This field is a link to one available under Ring Geometry Constraints. It is provided here for your convenience.\"></i>
                                            
                                        </span>
                                    </a>
                                </li>
                            
                                <li class=\"list-group-item py-0 ps-0\">
                                    <a data-label=\"
                                        
                                            Ring Center Opening Angle to Sun [Ring]
                                        
                                      \" data-qualifiedlabel=\"
                                        
                                            Ring Center Opening Angle to Sun [Ring]
                                        
                                      \"
                                      data-dispunit=\"degrees\"
                                      data-defaultunit=\"degrees\"
                                      data-availunits=\"{&#x27;degrees&#x27;: &#x27;degrees&#x27;, &#x27;radians&#x27;: &#x27;radians&#x27;}\"
                                      data-slug=\"RINGGEOsolarringopeningangle\" class=\"op-search-param\" href=\"#\">
                                        <span class=\"op-menu-item\">
                                            <span class=\"op-search-param-checkmark\">
                                                <i class=\"fa fa-check\"></i>
                                            </span>
                                            
                                                
                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The solar ring opening angle at the center of the ring system. This is the angle from the ring plane to the direction of incoming photon from the Sun (or other light source in the case of an occultation). It is positive on the north side of the ring plane and negative on the south side. This value is defined by the geometry during the time of the observation; it is independent of the field of view. Both the minimum and maximum north-based ring emission angles are stored for each observation and the search can be made more specific using the any/all/only modifiers. See Help/FAQ for more information.\"></i>
                                                
                                                <span>Ring Center Opening Angle to Sun [Ring]</span>
                                            
                                            
                                                <i class=\"fas fa-link op-referred-link op-menu-tooltip\" title=\"This field is a link to one available under Ring Geometry Constraints. It is provided here for your convenience.\"></i>
                                            
                                        </span>
                                    </a>
                                </li>
                            
                                <li class=\"list-group-item py-0 ps-0\">
                                    <a data-label=\"
                                        
                                            Ring Center Opening Angle to Observer [Ring]
                                        
                                      \" data-qualifiedlabel=\"
                                        
                                            Ring Center Opening Angle to Observer [Ring]
                                        
                                      \"
                                      data-dispunit=\"degrees\"
                                      data-defaultunit=\"degrees\"
                                      data-availunits=\"{&#x27;degrees&#x27;: &#x27;degrees&#x27;, &#x27;radians&#x27;: &#x27;radians&#x27;}\"
                                      data-slug=\"RINGGEOobserverringopeningangle\" class=\"op-search-param\" href=\"#\">
                                        <span class=\"op-menu-item\">
                                            <span class=\"op-search-param-checkmark\">
                                                <i class=\"fa fa-check\"></i>
                                            </span>
                                            
                                                
                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The observed ring opening angle at the center of the ring system. This is the angle from the ring plane to the direction of outgoing photon to the observer. It is positive on the north side of the ring plane and negative on the south side. This value is defined by the geometry during the time of the observation; it is independent of the field of view. Both the minimum and maximum observed ring opening angles are stored for each observation and the search can be made more specific using the any/all/only modifiers. See Help/FAQ for more information.\"></i>
                                                
                                                <span>Ring Center Opening Angle to Observer [Ring]</span>
                                            
                                            
                                                <i class=\"fas fa-link op-referred-link op-menu-tooltip\" title=\"This field is a link to one available under Ring Geometry Constraints. It is provided here for your convenience.\"></i>
                                            
                                        </span>
                                    </a>
                                </li>
                            
                        
                     
                
                     
                
                     
                 
            </ul>
        </li>
        
            <li class=\"list-group-item py-0 op-search-menu-category\">
                
                        <a href=\"#search-submenu-obs_surface_geometry\" data-bs-toggle=\"collapse\" aria-expanded=\"false\" class=\"dropdown-toggle py-2 op-submenu-category collapsed\" data-cat=\"obs_surface_geometry\">
                            <span class=\"title\">Surface Geometry Constraints&nbsp;<span class=\"op-menu-arrow\"></span></span>
                        </a>
                

                <ul class=\"list-group list-group-flush submenu collapse \" id=\"search-submenu-obs_surface_geometry\">

                <!-- all div labels have level 2 submenu to list params-->
                
                
                     
                
                     
                
                     
                
                     
                
                     
                
                     
                
                      
                        
                            <li class=\"list-group-item list-group-item-action py-0 ps-0 bg-white\"><div class=\"menu_help text-info\">Surface geometry, when available, is provided for all bodies in the field of view. Use Surface Geometry Target Selector to reveal more options. Supported instruments: Cassini ISS, UVIS, and VIMS, Galileo SSI, New Horizons LORRI, and Voyager ISS.</div></li>
                        

                        

                            
                            
                                <li class=\"list-group-item py-0 ps-0\">
                                    <a data-label=\"
                                        
                                            Surface Geometry Target Selector
                                        
                                      \" data-qualifiedlabel=\"
                                        
                                            Surface Geometry Target Selector
                                        
                                      \"
                                      data-dispunit=\"\"
                                      data-defaultunit=\"\"
                                      data-availunits=\"\"
                                      data-slug=\"surfacegeometrytargetname\" class=\"op-search-param\" href=\"#\">
                                        <span class=\"op-menu-item\">
                                            <span class=\"op-search-param-checkmark\">
                                                <i class=\"fa fa-check\"></i>
                                            </span>
                                            
                                                
                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The name of the target for which surface geometry parameters will be searchable. Once a target is selected, new search parameters specific to that target will appear. Only one target may be selected at a time. To perform more complex searches on the list of bodies in the field of view, use Multiple Target List.\"></i>
                                                
                                                <span>Surface Geometry Target Selector</span>
                                            
                                            
                                        </span>
                                    </a>
                                </li>
                            
                                <li class=\"list-group-item py-0 ps-0\">
                                    <a data-label=\"
                                        
                                            Multiple Target List
                                        
                                      \" data-qualifiedlabel=\"
                                        
                                            Multiple Target List
                                        
                                      \"
                                      data-dispunit=\"\"
                                      data-defaultunit=\"\"
                                      data-availunits=\"\"
                                      data-slug=\"surfacegeometrytargetlist\" class=\"op-search-param\" href=\"#\">
                                        <span class=\"op-menu-item\">
                                            <span class=\"op-search-param-checkmark\">
                                                <i class=\"fa fa-check\"></i>
                                            </span>
                                            
                                                
                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"An alphabetical, comma-separated list of targets in the field of view. The list is generated on a best-effort basis and is not guaranteed to be complete in all cases. For most targets in this list, surface geometry information will be available. This field is most useful for searching for observations that contain two or more specific bodies. See the FAQ for more information.\"></i>
                                                
                                                <span>Multiple Target List</span>
                                            
                                            
                                        </span>
                                    </a>
                                </li>
                            
                        
                     
                
                     
                 
            </ul>
        </li>
        
            <li class=\"list-group-item py-0 op-search-menu-category\">
                
                        <a href=\"#search-submenu-obs_ring_geometry\" data-bs-toggle=\"collapse\" aria-expanded=\"false\" class=\"dropdown-toggle py-2 op-submenu-category collapsed\" data-cat=\"obs_ring_geometry\">
                            <span class=\"title\">Ring Geometry Constraints&nbsp;<span class=\"op-menu-arrow\"></span></span>
                        </a>
                

                <ul class=\"list-group list-group-flush submenu collapse \" id=\"search-submenu-obs_ring_geometry\">

                <!-- all div labels have level 2 submenu to list params-->
                
                
                     
                
                     
                
                     
                
                     
                
                     
                
                     
                
                     
                
                      
                        
                            <li class=\"list-group-item list-group-item-action py-0 ps-0 bg-white\"><div class=\"menu_help text-info\">Supported instruments: Cassini ISS, UVIS, and VIMS, Galileo SSI, New Horizons LORRI, and Voyager ISS.</div></li>
                        

                        
                            
                            
                                <li class=\"list-group-item py-0 ps-0\">
                                    <a href=\"#search-submenu-obs_ring_geometry-radius-longitude\" data-bs-toggle=\"collapse\" aria-expanded=\"false\" class=\"dropdown-toggle op-submenu-category collapsed\" data-cat=\"obs_ring_geometry-radius-longitude\">
                                        <span class=\"menu-text title\">Radius &amp; Longitude&nbsp;<span class=\"op-menu-arrow\"></span></span>
                                    </a>
                                    <ul class=\"list-group list-group-flush submenu collapse \" id=\"search-submenu-obs_ring_geometry-radius-longitude\">
                                        
                                            
                                                <li class=\"list-group-item py-0 ps-0\">
                                                    <a data-label=\"
                                                        
                                                            Observed Ring Radius
                                                        
                                                        \" data-qualifiedlabel=\"
                                                        
                                                            Observed Ring Radius [Ring]
                                                        
                                                      \"
                                                      data-dispunit=\"km\"
                                                      data-defaultunit=\"km\"
                                                      data-availunits=\"{&#x27;km&#x27;: &#x27;km&#x27;, &#x27;m&#x27;: &#x27;m&#x27;, &#x27;jupiterradii&#x27;: &#x27;Rj (71492)&#x27;, &#x27;saturnradii&#x27;: &#x27;Rs (60330)&#x27;, &#x27;neptuneradii&#x27;: &#x27;Rn (25225)&#x27;, &#x27;uranusradii&#x27;: &#x27;Ru (25559)&#x27;}\"
                                                      data-slug=\"RINGGEOringradius\" class=\"op-search-param\" href=\"#\">
                                                        <span class=\"op-menu-item\">
                                                            <span class=\"op-search-param-checkmark\">
                                                                <i class=\"fa fa-check\"></i>
                                                            </span>
                                                            
                                                                
                                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The range of distances from the center of the planet to the point where a line of sight intercepts the ring plane in the field of view. Ring intercept points that are obscured by the planet or a moon within the observed field of view are ignored. For observations capturing reflected sunlight (i.e., with wavelengths in the visual or near-infrared), ring intercept points that are shadowed by the planet are also ignored. Both the minimum and maximum distances are stored for each observation and the search can be made more specific using the any/all/only modifiers. See Help/FAQ for more information.\"></i>
                                                                
                                                                <span>Observed Ring Radius</span>
                                                            
                                                            
                                                        </span>
                                                    </a>
                                                </li>
                                            
                                        
                                            
                                                <li class=\"list-group-item py-0 ps-0\">
                                                    <a data-label=\"
                                                        
                                                            Observed Longitude WRT Ascending Node
                                                        
                                                        \" data-qualifiedlabel=\"
                                                        
                                                            Observed Longitude WRT Ascending Node [Ring]
                                                        
                                                      \"
                                                      data-dispunit=\"degrees\"
                                                      data-defaultunit=\"degrees\"
                                                      data-availunits=\"{&#x27;degrees&#x27;: &#x27;degrees&#x27;, &#x27;dms&#x27;: &#x27;DMS&#x27;, &#x27;radians&#x27;: &#x27;radians&#x27;}\"
                                                      data-slug=\"RINGGEOascendinglongitude\" class=\"op-search-param\" href=\"#\">
                                                        <span class=\"op-menu-item\">
                                                            <span class=\"op-search-param-checkmark\">
                                                                <i class=\"fa fa-check\"></i>
                                                            </span>
                                                            
                                                                
                                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The range of ring longitudes (based on the ascending node) in the field of view. Ring longitude specifies the inertial longitude of the ring plane intercept point. Longitudes increase in the prograde direction. Values are defined from the ascending node of the ring system&#x27;s invariable plane along the ring plane. Ring intercept points that are obscured by the planet or a moon within the observed field of view are ignored. For observations capturing reflected sunlight (i.e., with wavelengths in the visual or near-infrared), ring intercept points that are shadowed by the planet are also ignored. Note that ring longitude wraps around from 360 to 0 and thus both minimum and maximum values must be specified for a valid search. OPUS will also allow you to search from a larger number to a smaller number, implying the ring longitude must wrap around. Both the minimum and maximum ring longitudes are stored for each observation and the search can be made more specific using the any/all/only modifiers. See Help/FAQ for more information.\"></i>
                                                                
                                                                <span>Observed Longitude WRT Ascending Node</span>
                                                            
                                                            
                                                        </span>
                                                    </a>
                                                </li>
                                            
                                        
                                            
                                                <li class=\"list-group-item py-0 ps-0\">
                                                    <a data-label=\"
                                                        
                                                            Sub-Solar Longitude WRT Ascending Node
                                                        
                                                        \" data-qualifiedlabel=\"
                                                        
                                                            Sub-Solar Longitude WRT Ascending Node [Ring]
                                                        
                                                      \"
                                                      data-dispunit=\"degrees\"
                                                      data-defaultunit=\"degrees\"
                                                      data-availunits=\"{&#x27;degrees&#x27;: &#x27;degrees&#x27;, &#x27;dms&#x27;: &#x27;DMS&#x27;, &#x27;radians&#x27;: &#x27;radians&#x27;}\"
                                                      data-slug=\"RINGGEOsubsolarringascendinglong\" class=\"op-search-param\" href=\"#\">
                                                        <span class=\"op-menu-item\">
                                                            <span class=\"op-search-param-checkmark\">
                                                                <i class=\"fa fa-check\"></i>
                                                            </span>
                                                            
                                                                
                                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The inertial longitude (based on the ascending node) of the sub-solar point on the ring plane. Longitudes increase in the prograde direction. Values are defined from the ascending node of the ring system&#x27;s invariable plane along the ring plane. This value is defined by the geometry during the time of the observation; it is independent of the field of view. Both the minimum and maximum longitudes are stored for each observation and the search can be made more specific using the any/all/only modifiers. See Help/FAQ for more information.\"></i>
                                                                
                                                                <span>Sub-Solar Longitude WRT Ascending Node</span>
                                                            
                                                            
                                                        </span>
                                                    </a>
                                                </li>
                                            
                                        
                                            
                                                <li class=\"list-group-item py-0 ps-0\">
                                                    <a data-label=\"
                                                        
                                                            Sub-Observer Longitude WRT Ascending Node
                                                        
                                                        \" data-qualifiedlabel=\"
                                                        
                                                            Sub-Observer Longitude WRT Ascending Node [Ring]
                                                        
                                                      \"
                                                      data-dispunit=\"degrees\"
                                                      data-defaultunit=\"degrees\"
                                                      data-availunits=\"{&#x27;degrees&#x27;: &#x27;degrees&#x27;, &#x27;dms&#x27;: &#x27;DMS&#x27;, &#x27;radians&#x27;: &#x27;radians&#x27;}\"
                                                      data-slug=\"RINGGEOsubobserverringascendinglong\" class=\"op-search-param\" href=\"#\">
                                                        <span class=\"op-menu-item\">
                                                            <span class=\"op-search-param-checkmark\">
                                                                <i class=\"fa fa-check\"></i>
                                                            </span>
                                                            
                                                                
                                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The inertial longitude (based on the ascending node) of the sub-observer point on the ring plane. Longitudes increase in the prograde direction. Values are defined from the ascending node of the ring system&#x27;s invariable plane along the ring plane. This value is defined by the geometry during the time of the observation; it is independent of the field of view. Both the minimum and maximum longitudes are stored for each observation and the search can be made more specific using the any/all/only modifiers. See Help/FAQ for more information.\"></i>
                                                                
                                                                <span>Sub-Observer Longitude WRT Ascending Node</span>
                                                            
                                                            
                                                        </span>
                                                    </a>
                                                </li>
                                            
                                        
                                            
                                                <li class=\"list-group-item py-0 ps-0\">
                                                    <a data-label=\"
                                                        
                                                            Observed Longitude WRT RA=0
                                                        
                                                        \" data-qualifiedlabel=\"
                                                        
                                                            Observed Longitude WRT RA=0 [Ring]
                                                        
                                                      \"
                                                      data-dispunit=\"degrees\"
                                                      data-defaultunit=\"degrees\"
                                                      data-availunits=\"{&#x27;degrees&#x27;: &#x27;degrees&#x27;, &#x27;dms&#x27;: &#x27;DMS&#x27;, &#x27;radians&#x27;: &#x27;radians&#x27;}\"
                                                      data-slug=\"RINGGEOJ2000longitude\" class=\"op-search-param\" href=\"#\">
                                                        <span class=\"op-menu-item\">
                                                            <span class=\"op-search-param-checkmark\">
                                                                <i class=\"fa fa-check\"></i>
                                                            </span>
                                                            
                                                                
                                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The range of ring longitudes (based on RA=0) in the field of view. Ring longitude specifies the inertial longitude of the ring plane intercept point. Longitudes increase in the prograde direction. Values are defined by a broken angle from the J2000 First Point of Aries (right ascension = 0), along the J2000 x-y plane to the ascending node of the ring system&#x27;s invariable plane, and then along the ring plane. Ring intercept points that are obscured by the planet or a moon within the observed field of view are ignored. For observations capturing reflected sunlight (i.e., with wavelengths in the visual or near-infrared), ring intercept points that are shadowed by the planet are also ignored. Note that ring longitude wraps around from 360 to 0 and thus both minimum and maximum values must be specified for a valid search. OPUS will also allow you to search from a larger number to a smaller number, implying the ring longitude must wrap around. Both the minimum and maximum ring longitudes are stored for each observation and the search can be made more specific using the any/all/only modifiers. See Help/FAQ for more information.\"></i>
                                                                
                                                                <span>Observed Longitude WRT RA=0</span>
                                                            
                                                            
                                                        </span>
                                                    </a>
                                                </li>
                                            
                                        
                                            
                                                <li class=\"list-group-item py-0 ps-0\">
                                                    <a data-label=\"
                                                        
                                                            Sub-Solar Longitude WRT RA=0
                                                        
                                                        \" data-qualifiedlabel=\"
                                                        
                                                            Sub-Solar Longitude WRT RA=0 [Ring]
                                                        
                                                      \"
                                                      data-dispunit=\"degrees\"
                                                      data-defaultunit=\"degrees\"
                                                      data-availunits=\"{&#x27;degrees&#x27;: &#x27;degrees&#x27;, &#x27;dms&#x27;: &#x27;DMS&#x27;, &#x27;radians&#x27;: &#x27;radians&#x27;}\"
                                                      data-slug=\"RINGGEOsubsolarringlong\" class=\"op-search-param\" href=\"#\">
                                                        <span class=\"op-menu-item\">
                                                            <span class=\"op-search-param-checkmark\">
                                                                <i class=\"fa fa-check\"></i>
                                                            </span>
                                                            
                                                                
                                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The inertial longitude (based on RA=0) of the sub-solar point on the ring plane. Longitudes increase in the prograde direction. Values are defined by a broken angle from the J2000 First Point of Aries (right ascension = 0), along the J2000 x-y plane to the ascending node of the ring system&#x27;s invariable plane, and then along the ring plane. This value is defined by the geometry during the time of the observation; it is independent of the field of view. Both the minimum and maximum longitudes are stored for each observation and the search can be made more specific using the any/all/only modifiers. See Help/FAQ for more information.\"></i>
                                                                
                                                                <span>Sub-Solar Longitude WRT RA=0</span>
                                                            
                                                            
                                                        </span>
                                                    </a>
                                                </li>
                                            
                                        
                                            
                                                <li class=\"list-group-item py-0 ps-0\">
                                                    <a data-label=\"
                                                        
                                                            Sub-Observer Longitude WRT RA=0
                                                        
                                                        \" data-qualifiedlabel=\"
                                                        
                                                            Sub-Observer Longitude WRT RA=0 [Ring]
                                                        
                                                      \"
                                                      data-dispunit=\"degrees\"
                                                      data-defaultunit=\"degrees\"
                                                      data-availunits=\"{&#x27;degrees&#x27;: &#x27;degrees&#x27;, &#x27;dms&#x27;: &#x27;DMS&#x27;, &#x27;radians&#x27;: &#x27;radians&#x27;}\"
                                                      data-slug=\"RINGGEOsubobserverringlong\" class=\"op-search-param\" href=\"#\">
                                                        <span class=\"op-menu-item\">
                                                            <span class=\"op-search-param-checkmark\">
                                                                <i class=\"fa fa-check\"></i>
                                                            </span>
                                                            
                                                                
                                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The inertial longitude (based on RA=0) of the sub-observer point on the ring plane. Longitudes increase in the prograde direction. Values are defined by a broken angle from the J2000 First Point of Aries (right ascension = 0), along the J2000 x-y plane to the ascending node of the ring system&#x27;s invariable plane, and then along the ring plane. This value is defined by the geometry during the time of the observation; it is independent of the field of view. Both the minimum and maximum longitudes are stored for each observation and the search can be made more specific using the any/all/only modifiers. See Help/FAQ for more information.\"></i>
                                                                
                                                                <span>Sub-Observer Longitude WRT RA=0</span>
                                                            
                                                            
                                                        </span>
                                                    </a>
                                                </li>
                                            
                                        
                                            
                                                <li class=\"list-group-item py-0 ps-0\">
                                                    <a data-label=\"
                                                        
                                                            Observed Solar Hour Angle
                                                        
                                                        \" data-qualifiedlabel=\"
                                                        
                                                            Observed Solar Hour Angle [Ring]
                                                        
                                                      \"
                                                      data-dispunit=\"degrees\"
                                                      data-defaultunit=\"degrees\"
                                                      data-availunits=\"{&#x27;degrees&#x27;: &#x27;degrees&#x27;, &#x27;dms&#x27;: &#x27;DMS&#x27;, &#x27;hours&#x27;: &#x27;hours&#x27;, &#x27;hms&#x27;: &#x27;HMS&#x27;, &#x27;radians&#x27;: &#x27;radians&#x27;}\"
                                                      data-slug=\"RINGGEOsolarhourangle\" class=\"op-search-param\" href=\"#\">
                                                        <span class=\"op-menu-item\">
                                                            <span class=\"op-search-param-checkmark\">
                                                                <i class=\"fa fa-check\"></i>
                                                            </span>
                                                            
                                                                
                                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The range of solar hour angles in the field of view. Solar hour angle specifies the longitude of the ring plane intercept point relative to the anti-solar direction. At 90 degrees, the ring particles are moving toward the Sun, whereas at 270 degrees they are moving away. Ring intercept points that are obscured by the planet or a moon within the observed field of view are ignored. However, ring intercept points that are shadowed by the planet are not ignored. Note that solar hour angle wraps around from 360 to 0 and thus both minimum and maximum values must be specified for a valid search. OPUS will also allow you to search from a larger number to a smaller number, implying the solar hour angle must wrap around. Both the minimum and maximum solar hour angles are stored for each observation and the search can be made more specific using the any/all/only modifiers. See Help/FAQ for more information.\"></i>
                                                                
                                                                <span>Observed Solar Hour Angle</span>
                                                            
                                                            
                                                        </span>
                                                    </a>
                                                </li>
                                            
                                        
                                            
                                                <li class=\"list-group-item py-0 ps-0\">
                                                    <a data-label=\"
                                                        
                                                            Longitude WRT Observer
                                                        
                                                        \" data-qualifiedlabel=\"
                                                        
                                                            Longitude WRT Observer [Ring]
                                                        
                                                      \"
                                                      data-dispunit=\"degrees\"
                                                      data-defaultunit=\"degrees\"
                                                      data-availunits=\"{&#x27;degrees&#x27;: &#x27;degrees&#x27;, &#x27;dms&#x27;: &#x27;DMS&#x27;, &#x27;radians&#x27;: &#x27;radians&#x27;}\"
                                                      data-slug=\"RINGGEOlongitudeWRTobserver\" class=\"op-search-param\" href=\"#\">
                                                        <span class=\"op-menu-item\">
                                                            <span class=\"op-search-param-checkmark\">
                                                                <i class=\"fa fa-check\"></i>
                                                            </span>
                                                            
                                                                
                                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The range of ring longitudes with respect to the observer in the field of view. This alternative definition of ring longitude is measured relative to the direction toward the observer. Values increase in the prograde direction. Unlike other ring longitudes, this quantity ranges from -180 to 180 degrees instead of 0 to 360 degrees. Ring intercept points that are obscured by the planet or a moon within the observed field of view are ignored. For observations capturing reflected sunlight (i.e., with wavelengths in the visual or near-infrared), ring intercept points that are shadowed by the planet are also ignored. Note that ring longitude wraps around from 180 to -180 and thus both minimum and maximum values must be specified for a valid search. OPUS will also allow you to search from a larger number to a smaller number, implying the ring longitude must wrap around. Both the minimum and maximum longitudes are stored for each observation and the search can be made more specific using the any/all/only modifiers. See Help/FAQ for more information.\"></i>
                                                                
                                                                <span>Longitude WRT Observer</span>
                                                            
                                                            
                                                        </span>
                                                    </a>
                                                </li>
                                            
                                        
                                            
                                                <li class=\"list-group-item py-0 ps-0\">
                                                    <a data-label=\"
                                                        
                                                            Azimuth WRT Observer
                                                        
                                                        \" data-qualifiedlabel=\"
                                                        
                                                            Azimuth WRT Observer [Ring]
                                                        
                                                      \"
                                                      data-dispunit=\"degrees\"
                                                      data-defaultunit=\"degrees\"
                                                      data-availunits=\"{&#x27;degrees&#x27;: &#x27;degrees&#x27;, &#x27;dms&#x27;: &#x27;DMS&#x27;, &#x27;radians&#x27;: &#x27;radians&#x27;}\"
                                                      data-slug=\"RINGGEOringazimuthWRTobserver\" class=\"op-search-param\" href=\"#\">
                                                        <span class=\"op-menu-item\">
                                                            <span class=\"op-search-param-checkmark\">
                                                                <i class=\"fa fa-check\"></i>
                                                            </span>
                                                            
                                                                
                                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The range of ring azimuths in the field of view. Ring azimuth is the angle measured at a point in the ring plane, starting from the direction of a photon heading to the observer, and ending at the direction of a local radial vector. This angle is projected into the ring plane and measured in the prograde direction. As seen from the observer, it equals 90 degrees along the right ansa and 270 degrees along the left ansa. Note that this quantity differs from ring longitudes for viewpoints relatively close to the rings, because angles are measured at the ring intercept point rather than at the center of the planet. Ring intercept points that are obscured by the planet or a moon within the observed field of view are ignored. For observations capturing reflected sunlight (i.e., with wavelengths in the visual or near-infrared), ring intercept points that are shadowed by the planet are also ignored. Note that ring azimuth wraps around from 360 to 0 and thus both minimum and maximum values must be specified for a valid search. OPUS will also allow you to search from a larger number to a smaller number, implying the ring azimuth must wrap around. Both the minimum and maximum ring azimuths are stored for each observation and the search can be made more specific using the any/all/only modifiers. See Help/FAQ for more information.\"></i>
                                                                
                                                                <span>Azimuth WRT Observer</span>
                                                            
                                                            
                                                        </span>
                                                    </a>
                                                </li>
                                            
                                         
                                    </ul>
                                </li>
                            
                                <li class=\"list-group-item py-0 ps-0\">
                                    <a href=\"#search-submenu-obs_ring_geometry-distance-resolution\" data-bs-toggle=\"collapse\" aria-expanded=\"false\" class=\"dropdown-toggle op-submenu-category collapsed\" data-cat=\"obs_ring_geometry-distance-resolution\">
                                        <span class=\"menu-text title\">Distance &amp; Resolution&nbsp;<span class=\"op-menu-arrow\"></span></span>
                                    </a>
                                    <ul class=\"list-group list-group-flush submenu collapse \" id=\"search-submenu-obs_ring_geometry-distance-resolution\">
                                        
                                            
                                                <li class=\"list-group-item py-0 ps-0\">
                                                    <a data-label=\"
                                                        
                                                            Observed Distance to Ring Intercept
                                                        
                                                        \" data-qualifiedlabel=\"
                                                        
                                                            Observed Distance to Ring Intercept [Ring]
                                                        
                                                      \"
                                                      data-dispunit=\"km\"
                                                      data-defaultunit=\"km\"
                                                      data-availunits=\"{&#x27;km&#x27;: &#x27;km&#x27;, &#x27;m&#x27;: &#x27;m&#x27;, &#x27;jupiterradii&#x27;: &#x27;Rj (71492)&#x27;, &#x27;saturnradii&#x27;: &#x27;Rs (60330)&#x27;, &#x27;neptuneradii&#x27;: &#x27;Rn (25225)&#x27;, &#x27;uranusradii&#x27;: &#x27;Ru (25559)&#x27;}\"
                                                      data-slug=\"RINGGEOrangetoringintercept\" class=\"op-search-param\" href=\"#\">
                                                        <span class=\"op-menu-item\">
                                                            <span class=\"op-search-param-checkmark\">
                                                                <i class=\"fa fa-check\"></i>
                                                            </span>
                                                            
                                                                
                                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The range of ring distances in the field of view. Ring distance equals the separation between the observer and the point where a line of sight intercepts the ring plane. Ring intercept points that are obscured by the planet or a moon are ignored. For observations capturing reflected sunlight (i.e., with wavelengths in the visual or near-infrared), ring intercept points that are shadowed by the planet are also ignored. Both the minimum and maximum ring distances are stored for each observation and the search can be made more specific using the any/all/only modifiers. See Help/FAQ for more information.\"></i>
                                                                
                                                                <span>Observed Distance to Ring Intercept</span>
                                                            
                                                            
                                                        </span>
                                                    </a>
                                                </li>
                                            
                                        
                                            
                                                <li class=\"list-group-item py-0 ps-0\">
                                                    <a data-label=\"
                                                        
                                                            Ring Center Distance
                                                        
                                                        \" data-qualifiedlabel=\"
                                                        
                                                            Ring Center Distance [Ring]
                                                        
                                                      \"
                                                      data-dispunit=\"km\"
                                                      data-defaultunit=\"km\"
                                                      data-availunits=\"{&#x27;km&#x27;: &#x27;km&#x27;, &#x27;m&#x27;: &#x27;m&#x27;, &#x27;jupiterradii&#x27;: &#x27;Rj (71492)&#x27;, &#x27;saturnradii&#x27;: &#x27;Rs (60330)&#x27;, &#x27;neptuneradii&#x27;: &#x27;Rn (25225)&#x27;, &#x27;uranusradii&#x27;: &#x27;Ru (25559)&#x27;}\"
                                                      data-slug=\"RINGGEOringcenterdistance\" class=\"op-search-param\" href=\"#\">
                                                        <span class=\"op-menu-item\">
                                                            <span class=\"op-search-param-checkmark\">
                                                                <i class=\"fa fa-check\"></i>
                                                            </span>
                                                            
                                                                
                                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The distance from the observer to the center of the ring system. This value is defined by the geometry during the time of the observation; it is independent of the field of view. Both the minimum and maximum distances are stored for each observation and the search can be made more specific using the any/all/only modifiers. See Help/FAQ for more information.\"></i>
                                                                
                                                                <span>Ring Center Distance</span>
                                                            
                                                            
                                                        </span>
                                                    </a>
                                                </li>
                                            
                                        
                                            
                                                <li class=\"list-group-item py-0 ps-0\">
                                                    <a data-label=\"
                                                        
                                                            Observed Resolution
                                                        
                                                        \" data-qualifiedlabel=\"
                                                        
                                                            Observed Resolution [Ring]
                                                        
                                                      \"
                                                      data-dispunit=\"km/pixel\"
                                                      data-defaultunit=\"km_pixel\"
                                                      data-availunits=\"{&#x27;km_pixel&#x27;: &#x27;km/pixel&#x27;, &#x27;m_pixel&#x27;: &#x27;m/pixel&#x27;}\"
                                                      data-slug=\"RINGGEOresolution\" class=\"op-search-param\" href=\"#\">
                                                        <span class=\"op-menu-item\">
                                                            <span class=\"op-search-param-checkmark\">
                                                                <i class=\"fa fa-check\"></i>
                                                            </span>
                                                            
                                                                
                                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The range of ring intercept resolutions in the field of view. Ring intercept resolution is the size of one edge of a pixel at the distance of the ring intercept point. If the pixel shape is not square, it is defined by the smaller of the two edges. Unlike the quantity &#x27;radial resolution&#x27;, these values are not projected into the ring plane. Ring intercept points that are obscured by the planet or a moon within the observed field of view are ignored. For observations capturing reflected sunlight (i.e., with wavelengths in the visual or near-infrared), ring intercept points that are shadowed by the planet are also ignored. Both the minimum and maximum resolutions are stored for each observation and the search can be made more specific using the any/all/only modifiers. See Help/FAQ for more information.\"></i>
                                                                
                                                                <span>Observed Resolution</span>
                                                            
                                                            
                                                        </span>
                                                    </a>
                                                </li>
                                            
                                        
                                            
                                                <li class=\"list-group-item py-0 ps-0\">
                                                    <a data-label=\"
                                                        
                                                            Projected Radial Resolution
                                                        
                                                        \" data-qualifiedlabel=\"
                                                        
                                                            Projected Radial Resolution [Ring]
                                                        
                                                      \"
                                                      data-dispunit=\"km/pixel\"
                                                      data-defaultunit=\"km_pixel\"
                                                      data-availunits=\"{&#x27;km_pixel&#x27;: &#x27;km/pixel&#x27;, &#x27;m_pixel&#x27;: &#x27;m/pixel&#x27;}\"
                                                      data-slug=\"RINGGEOprojectedradialresolution\" class=\"op-search-param\" href=\"#\">
                                                        <span class=\"op-menu-item\">
                                                            <span class=\"op-search-param-checkmark\">
                                                                <i class=\"fa fa-check\"></i>
                                                            </span>
                                                            
                                                                
                                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The range of radial resolutions in the field of view. Radial resolution is related to the gradient of the ring intercept radius. It is equal to the largest change in the radius resulting from a one-pixel shift of the line of sight. In practice, it defines the approximate size of the narrowest ring feature that can be resolved. Ring intercept points that are obscured by the planet or a moon within the observed field of view are ignored. For observations capturing reflected sunlight (i.e., with wavelengths in the visual or near-infrared), ring intercept points that are shadowed by the planet are also ignored. Both the minimum and maximum resolutions are stored for each observation and the search can be made more specific using the any/all/only modifiers. See Help/FAQ for more information.\"></i>
                                                                
                                                                <span>Projected Radial Resolution</span>
                                                            
                                                            
                                                        </span>
                                                    </a>
                                                </li>
                                            
                                        
                                            
                                                <li class=\"list-group-item py-0 ps-0\">
                                                    <a data-label=\"
                                                        
                                                            Projected Longitudinal Resolution Angle
                                                        
                                                        \" data-qualifiedlabel=\"
                                                        
                                                            Projected Longitudinal Resolution Angle [Ring]
                                                        
                                                      \"
                                                      data-dispunit=\"degrees/pixel\"
                                                      data-defaultunit=\"degrees_pixel\"
                                                      data-availunits=\"{&#x27;degrees_pixel&#x27;: &#x27;degrees/pixel&#x27;, &#x27;radians_pixel&#x27;: &#x27;radians/pixel&#x27;}\"
                                                      data-slug=\"RINGGEOprojectedlongitudinalresolutionangle\" class=\"op-search-param\" href=\"#\">
                                                        <span class=\"op-menu-item\">
                                                            <span class=\"op-search-param-checkmark\">
                                                                <i class=\"fa fa-check\"></i>
                                                            </span>
                                                            
                                                                
                                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The range of longitudinal resolutions in the field of view, expressed as an angle. Longitudinal resolution is related to the gradient of the ring intercept longitude. It is equal to the largest change in the longitude resulting from a one-pixel shift of the line of sight. In practice, it defines the approximate size of the narrowest azimuthal ring feature that can be resolved. Ring intercept points that are obscured by the planet or a moon within the observed field of view are ignored. For observations capturing reflected sunlight (i.e., with wavelengths in the visual or near-infrared), ring intercept points that are shadowed by the planet are also ignored. Both the minimum and maximum resolutions are stored for each observation and the search can be made more specific using the any/all/only modifiers. See Help/FAQ for more information.\"></i>
                                                                
                                                                <span>Projected Longitudinal Resolution Angle</span>
                                                            
                                                            
                                                        </span>
                                                    </a>
                                                </li>
                                            
                                        
                                            
                                                <li class=\"list-group-item py-0 ps-0\">
                                                    <a data-label=\"
                                                        
                                                            Projected Longitudinal Resolution
                                                        
                                                        \" data-qualifiedlabel=\"
                                                        
                                                            Projected Longitudinal Resolution [Ring]
                                                        
                                                      \"
                                                      data-dispunit=\"km/pixel\"
                                                      data-defaultunit=\"km_pixel\"
                                                      data-availunits=\"{&#x27;km_pixel&#x27;: &#x27;km/pixel&#x27;, &#x27;m_pixel&#x27;: &#x27;m/pixel&#x27;}\"
                                                      data-slug=\"RINGGEOprojectedlongitudinalresolution\" class=\"op-search-param\" href=\"#\">
                                                        <span class=\"op-menu-item\">
                                                            <span class=\"op-search-param-checkmark\">
                                                                <i class=\"fa fa-check\"></i>
                                                            </span>
                                                            
                                                                
                                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The range of longitudinal resolutions in the field of view, expressed as a distance. Longitudinal resolution is related to the gradient of the ring intercept longitude. It is equal to the largest change in the longitude resulting from a one-pixel shift of the line of sight. In practice, it defines the approximate size of the narrowest azimuthal ring feature that can be resolved. Ring intercept points that are obscured by the planet or a moon within the observed field of view are ignored. For observations capturing reflected sunlight (i.e., with wavelengths in the visual or near-infrared), ring intercept points that are shadowed by the planet are also ignored. Both the minimum and maximum resolutions are stored for each observation and the search can be made more specific using the any/all/only modifiers. See Help/FAQ for more information.\"></i>
                                                                
                                                                <span>Projected Longitudinal Resolution</span>
                                                            
                                                            
                                                        </span>
                                                    </a>
                                                </li>
                                            
                                         
                                    </ul>
                                </li>
                            
                                <li class=\"list-group-item py-0 ps-0\">
                                    <a href=\"#search-submenu-obs_ring_geometry-lighting-geometry-observed\" data-bs-toggle=\"collapse\" aria-expanded=\"false\" class=\"dropdown-toggle op-submenu-category collapsed\" data-cat=\"obs_ring_geometry-lighting-geometry-observed\">
                                        <span class=\"menu-text title\">Lighting Geometry - Observed&nbsp;<span class=\"op-menu-arrow\"></span></span>
                                    </a>
                                    <ul class=\"list-group list-group-flush submenu collapse \" id=\"search-submenu-obs_ring_geometry-lighting-geometry-observed\">
                                        
                                            
                                                <li class=\"list-group-item py-0 ps-0\">
                                                    <a data-label=\"
                                                        
                                                            Observed Phase Angle
                                                        
                                                        \" data-qualifiedlabel=\"
                                                        
                                                            Observed Phase Angle [Ring]
                                                        
                                                      \"
                                                      data-dispunit=\"degrees\"
                                                      data-defaultunit=\"degrees\"
                                                      data-availunits=\"{&#x27;degrees&#x27;: &#x27;degrees&#x27;, &#x27;radians&#x27;: &#x27;radians&#x27;}\"
                                                      data-slug=\"RINGGEOphase\" class=\"op-search-param\" href=\"#\">
                                                        <span class=\"op-menu-item\">
                                                            <span class=\"op-search-param-checkmark\">
                                                                <i class=\"fa fa-check\"></i>
                                                            </span>
                                                            
                                                                
                                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The range of ring phase angles in the field of view. Ring phase angle is the angle, measured at the ring intercept point, between the direction of the incoming photon from the light source and the direction of the outgoing photon to the observer. Ring intercept points that are obscured by the planet or a moon within the observed field of view are ignored. For observations capturing reflected sunlight (i.e., with wavelengths in the visual or near-infrared), ring intercept points that are shadowed by the planet are also ignored. Both the minimum and maximum ring phase angles are stored for each observation and the search can be made more specific using the any/all/only modifiers. See Help/FAQ for more information.\"></i>
                                                                
                                                                <span>Observed Phase Angle</span>
                                                            
                                                            
                                                        </span>
                                                    </a>
                                                </li>
                                            
                                        
                                            
                                                <li class=\"list-group-item py-0 ps-0\">
                                                    <a data-label=\"
                                                        
                                                            Observed Incidence Angle
                                                        
                                                        \" data-qualifiedlabel=\"
                                                        
                                                            Observed Incidence Angle [Ring]
                                                        
                                                      \"
                                                      data-dispunit=\"degrees\"
                                                      data-defaultunit=\"degrees\"
                                                      data-availunits=\"{&#x27;degrees&#x27;: &#x27;degrees&#x27;, &#x27;radians&#x27;: &#x27;radians&#x27;}\"
                                                      data-slug=\"RINGGEOincidence\" class=\"op-search-param\" href=\"#\">
                                                        <span class=\"op-menu-item\">
                                                            <span class=\"op-search-param-checkmark\">
                                                                <i class=\"fa fa-check\"></i>
                                                            </span>
                                                            
                                                                
                                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The range of ring incidence angles in the field of view. Ring incidence angle is the angle, measured at the ring intercept point, between the local surface normal vector on the side of the ring plane illuminated by the light source, to the direction of the incoming photon from the light source. Note that it never exceeds 90 degrees. Ring intercept points that are obscured by the planet or a moon within the observed field of view are ignored. For observations capturing reflected sunlight (i.e., with wavelengths in the visual or near-infrared), ring intercept points that are shadowed by the planet are also ignored. Both the minimum and maximum ring incidence angles are stored for each observation and the search can be made more specific using the any/all/only modifiers. See Help/FAQ for more information.\"></i>
                                                                
                                                                <span>Observed Incidence Angle</span>
                                                            
                                                            
                                                        </span>
                                                    </a>
                                                </li>
                                            
                                        
                                            
                                                <li class=\"list-group-item py-0 ps-0\">
                                                    <a data-label=\"
                                                        
                                                            Observed Emission Angle
                                                        
                                                        \" data-qualifiedlabel=\"
                                                        
                                                            Observed Emission Angle [Ring]
                                                        
                                                      \"
                                                      data-dispunit=\"degrees\"
                                                      data-defaultunit=\"degrees\"
                                                      data-availunits=\"{&#x27;degrees&#x27;: &#x27;degrees&#x27;, &#x27;radians&#x27;: &#x27;radians&#x27;}\"
                                                      data-slug=\"RINGGEOemission\" class=\"op-search-param\" href=\"#\">
                                                        <span class=\"op-menu-item\">
                                                            <span class=\"op-search-param-checkmark\">
                                                                <i class=\"fa fa-check\"></i>
                                                            </span>
                                                            
                                                                
                                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The range of ring emission angles in the field of view. Ring emission angle is the angle, measured at the ring intercept point, between the local surface normal vector on the side of the ring plane illuminated by the light source, to the direction of the outgoing photon to the observer. Note that it is less than 90 degrees on the illuminated side of the ring plane, and greater than 90 degrees on the &#x27;dark&#x27; side. Ring intercept points that are obscured by the planet or a moon within the observed field of view are ignored. For observations capturing reflected sunlight (i.e., with wavelengths in the visual or near-infrared), ring intercept points that are shadowed by the planet are also ignored. Both the minimum and maximum ring emission angles are stored for each observation and the search can be made more specific using the any/all/only modifiers. See Help/FAQ for more information.\"></i>
                                                                
                                                                <span>Observed Emission Angle</span>
                                                            
                                                            
                                                        </span>
                                                    </a>
                                                </li>
                                            
                                        
                                            
                                                <li class=\"list-group-item py-0 ps-0\">
                                                    <a data-label=\"
                                                        
                                                            Observed North-Based Incidence
                                                        
                                                        \" data-qualifiedlabel=\"
                                                        
                                                            Observed North-Based Incidence [Ring]
                                                        
                                                      \"
                                                      data-dispunit=\"degrees\"
                                                      data-defaultunit=\"degrees\"
                                                      data-availunits=\"{&#x27;degrees&#x27;: &#x27;degrees&#x27;, &#x27;radians&#x27;: &#x27;radians&#x27;}\"
                                                      data-slug=\"RINGGEOnorthbasedincidence\" class=\"op-search-param\" href=\"#\">
                                                        <span class=\"op-menu-item\">
                                                            <span class=\"op-search-param-checkmark\">
                                                                <i class=\"fa fa-check\"></i>
                                                            </span>
                                                            
                                                                
                                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The range of north-based ring incidence angles in the field of view. North-based ring incidence angle is the angle, measured at the ring intercept point, between the local surface normal vector on the north side of the ring plane, to the direction of the incoming photon. It is &gt; 90 degrees when the light source illuminates the south face of the rings. Ring intercept points that are obscured by the planet or a moon within the observed field of view are ignored. For observations capturing reflected sunlight (i.e., with wavelengths in the visual or near-infrared), ring intercept points that are shadowed by the planet are also ignored. Both the minimum and maximum north-based ring incidence angles are stored for each observation and the search can be made more specific using the any/all/only modifiers. See Help/FAQ for more information.\"></i>
                                                                
                                                                <span>Observed North-Based Incidence</span>
                                                            
                                                            
                                                        </span>
                                                    </a>
                                                </li>
                                            
                                        
                                            
                                                <li class=\"list-group-item py-0 ps-0\">
                                                    <a data-label=\"
                                                        
                                                            Observed North-Based Emission
                                                        
                                                        \" data-qualifiedlabel=\"
                                                        
                                                            Observed North-Based Emission [Ring]
                                                        
                                                      \"
                                                      data-dispunit=\"degrees\"
                                                      data-defaultunit=\"degrees\"
                                                      data-availunits=\"{&#x27;degrees&#x27;: &#x27;degrees&#x27;, &#x27;radians&#x27;: &#x27;radians&#x27;}\"
                                                      data-slug=\"RINGGEOnorthbasedemission\" class=\"op-search-param\" href=\"#\">
                                                        <span class=\"op-menu-item\">
                                                            <span class=\"op-search-param-checkmark\">
                                                                <i class=\"fa fa-check\"></i>
                                                            </span>
                                                            
                                                                
                                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The range of north-based ring emission angles in the field of view. North-based ring emission angle is the angle, measured at the ring intercept point, between the local surface normal vector on the north side of the ring plane, to the direction of the outgoing photon to the observer. Note that it is &lt; 90 degrees on the north side of the ring plane and &gt; 90 degrees on the south side. Ring intercept points that are obscured by the planet or a moon within the observed field of view are ignored. For observations capturing reflected sunlight (i.e., with wavelengths in the visual or near-infrared), ring intercept points that are shadowed by the planet are also ignored. Both the minimum and maximum north-based ring emission angles are stored for each observation and the search can be made more specific using the any/all/only modifiers. See Help/FAQ for more information.\"></i>
                                                                
                                                                <span>Observed North-Based Emission</span>
                                                            
                                                            
                                                        </span>
                                                    </a>
                                                </li>
                                            
                                        
                                            
                                                <li class=\"list-group-item py-0 ps-0\">
                                                    <a data-label=\"
                                                        
                                                            Solar Ring Elevation
                                                        
                                                        \" data-qualifiedlabel=\"
                                                        
                                                            Solar Ring Elevation [Ring]
                                                        
                                                      \"
                                                      data-dispunit=\"degrees\"
                                                      data-defaultunit=\"degrees\"
                                                      data-availunits=\"{&#x27;degrees&#x27;: &#x27;degrees&#x27;, &#x27;radians&#x27;: &#x27;radians&#x27;}\"
                                                      data-slug=\"RINGGEOsolarringelevation\" class=\"op-search-param\" href=\"#\">
                                                        <span class=\"op-menu-item\">
                                                            <span class=\"op-search-param-checkmark\">
                                                                <i class=\"fa fa-check\"></i>
                                                            </span>
                                                            
                                                                
                                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The range of solar ring elevations in the field of view. Solar ring elevation is the angle, measured at the ring intercept point, between the ring plane and the direction of the incoming photon from the Sun (or other light source in the case of an occultation). The value is positive on the side of the ring plane defined by prograde rotation; note that this is the north side of the ring plane for Jupiter, Saturn and Neptune, but the IAU-defined south side for Uranus. Ring intercept points that are obscured by the planet or a moon within the observed field of view are ignored. For observations capturing reflected sunlight (i.e., with wavelengths in the visual or near-infrared), ring intercept points that are shadowed by the planet are also ignored. Both the minimum and maximum solar ring elevations are stored for each observation and the search can be made more specific using the any/all/only modifiers. See Help/FAQ for more information.\"></i>
                                                                
                                                                <span>Solar Ring Elevation</span>
                                                            
                                                            
                                                        </span>
                                                    </a>
                                                </li>
                                            
                                        
                                            
                                                <li class=\"list-group-item py-0 ps-0\">
                                                    <a data-label=\"
                                                        
                                                            Observer Ring Elevation
                                                        
                                                        \" data-qualifiedlabel=\"
                                                        
                                                            Observer Ring Elevation [Ring]
                                                        
                                                      \"
                                                      data-dispunit=\"degrees\"
                                                      data-defaultunit=\"degrees\"
                                                      data-availunits=\"{&#x27;degrees&#x27;: &#x27;degrees&#x27;, &#x27;radians&#x27;: &#x27;radians&#x27;}\"
                                                      data-slug=\"RINGGEOobserverringelevation\" class=\"op-search-param\" href=\"#\">
                                                        <span class=\"op-menu-item\">
                                                            <span class=\"op-search-param-checkmark\">
                                                                <i class=\"fa fa-check\"></i>
                                                            </span>
                                                            
                                                                
                                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The range of observer ring elevations in the field of view. Observer ring elevation is the angle, measured at the ring intercept point, between the ring plane and the direction of the outgoing photon to the observer. The value is positive on the side of the ring plane defined by prograde rotation; note that this is the north side of the ring plane for Jupiter, Saturn and Neptune, but the IAU-defined south side for Uranus. Ring intercept points that are obscured by the planet or a moon within the observed field of view are ignored. For observations capturing reflected sunlight (i.e., with wavelengths in the visual or near-infrared), ring intercept points that are shadowed by the planet are also ignored. Both the minimum and maximum observer ring elevations are stored for each observation and the search can be made more specific using the any/all/only modifiers. See Help/FAQ for more information.\"></i>
                                                                
                                                                <span>Observer Ring Elevation</span>
                                                            
                                                            
                                                        </span>
                                                    </a>
                                                </li>
                                            
                                         
                                    </ul>
                                </li>
                            
                                <li class=\"list-group-item py-0 ps-0\">
                                    <a href=\"#search-submenu-obs_ring_geometry-lighting-geometry-ring-center\" data-bs-toggle=\"collapse\" aria-expanded=\"false\" class=\"dropdown-toggle op-submenu-category collapsed\" data-cat=\"obs_ring_geometry-lighting-geometry-ring-center\">
                                        <span class=\"menu-text title\">Lighting Geometry - Ring Center&nbsp;<span class=\"op-menu-arrow\"></span></span>
                                    </a>
                                    <ul class=\"list-group list-group-flush submenu collapse \" id=\"search-submenu-obs_ring_geometry-lighting-geometry-ring-center\">
                                        
                                            
                                                <li class=\"list-group-item py-0 ps-0\">
                                                    <a data-label=\"
                                                        
                                                            Ring Center Phase
                                                        
                                                        \" data-qualifiedlabel=\"
                                                        
                                                            Ring Center Phase [Ring]
                                                        
                                                      \"
                                                      data-dispunit=\"degrees\"
                                                      data-defaultunit=\"degrees\"
                                                      data-availunits=\"{&#x27;degrees&#x27;: &#x27;degrees&#x27;, &#x27;radians&#x27;: &#x27;radians&#x27;}\"
                                                      data-slug=\"RINGGEOringcenterphase\" class=\"op-search-param\" href=\"#\">
                                                        <span class=\"op-menu-item\">
                                                            <span class=\"op-search-param-checkmark\">
                                                                <i class=\"fa fa-check\"></i>
                                                            </span>
                                                            
                                                                
                                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The phase angle at the center of the ring system. This is the angle between the local direction of an incoming photon and the local direction of an outgoing photon to the observer. This value is defined by the geometry during the time of the observation; it is independent of the field of view. Both the minimum and maximum ring phase angles are stored for each observation and the search can be made more specific using the any/all/only modifiers. See Help/FAQ for more information.\"></i>
                                                                
                                                                <span>Ring Center Phase</span>
                                                            
                                                            
                                                        </span>
                                                    </a>
                                                </li>
                                            
                                        
                                            
                                                <li class=\"list-group-item py-0 ps-0\">
                                                    <a data-label=\"
                                                        
                                                            Ring Center Incidence
                                                        
                                                        \" data-qualifiedlabel=\"
                                                        
                                                            Ring Center Incidence [Ring]
                                                        
                                                      \"
                                                      data-dispunit=\"degrees\"
                                                      data-defaultunit=\"degrees\"
                                                      data-availunits=\"{&#x27;degrees&#x27;: &#x27;degrees&#x27;, &#x27;radians&#x27;: &#x27;radians&#x27;}\"
                                                      data-slug=\"RINGGEOringcenterincidence\" class=\"op-search-param\" href=\"#\">
                                                        <span class=\"op-menu-item\">
                                                            <span class=\"op-search-param-checkmark\">
                                                                <i class=\"fa fa-check\"></i>
                                                            </span>
                                                            
                                                                
                                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The ring incidence angle at the center of the ring system. This is the angle measured from the local surface normal vector on the illuminated side of the ring plane to the direction of the incoming photon. Note that it never exceeds 90 degrees. This value is defined by the geometry during the time of the observation; it is independent of the field of view. Both the minimum and maximum ring incidence angles are stored for each observation and the search can be made more specific using the any/all/only modifiers. See Help/FAQ for more information.\"></i>
                                                                
                                                                <span>Ring Center Incidence</span>
                                                            
                                                            
                                                        </span>
                                                    </a>
                                                </li>
                                            
                                        
                                            
                                                <li class=\"list-group-item py-0 ps-0\">
                                                    <a data-label=\"
                                                        
                                                            Ring Center Emission
                                                        
                                                        \" data-qualifiedlabel=\"
                                                        
                                                            Ring Center Emission [Ring]
                                                        
                                                      \"
                                                      data-dispunit=\"degrees\"
                                                      data-defaultunit=\"degrees\"
                                                      data-availunits=\"{&#x27;degrees&#x27;: &#x27;degrees&#x27;, &#x27;radians&#x27;: &#x27;radians&#x27;}\"
                                                      data-slug=\"RINGGEOringcenteremission\" class=\"op-search-param\" href=\"#\">
                                                        <span class=\"op-menu-item\">
                                                            <span class=\"op-search-param-checkmark\">
                                                                <i class=\"fa fa-check\"></i>
                                                            </span>
                                                            
                                                                
                                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The ring emission angle at the center of the ring system. This is the angle measured from the local surface normal vector on the illuminated side of the ring plane to the direction of the outgoing photon to the observer. It is &lt; 90 degrees on the illuminated side of the ring plane and &gt; 90 degrees on the &#x27;dark&#x27; side. This value is defined by the geometry during the time of the observation; it is independent of the field of view. Both the minimum and maximum ring emission angles are stored for each observation and the search can be made more specific using the any/all/only modifiers. See Help/FAQ for more information.\"></i>
                                                                
                                                                <span>Ring Center Emission</span>
                                                            
                                                            
                                                        </span>
                                                    </a>
                                                </li>
                                            
                                        
                                            
                                                <li class=\"list-group-item py-0 ps-0\">
                                                    <a data-label=\"
                                                        
                                                            Ring Center North-Based Incidence
                                                        
                                                        \" data-qualifiedlabel=\"
                                                        
                                                            Ring Center North-Based Incidence [Ring]
                                                        
                                                      \"
                                                      data-dispunit=\"degrees\"
                                                      data-defaultunit=\"degrees\"
                                                      data-availunits=\"{&#x27;degrees&#x27;: &#x27;degrees&#x27;, &#x27;radians&#x27;: &#x27;radians&#x27;}\"
                                                      data-slug=\"RINGGEOringcenternorthbasedincidence\" class=\"op-search-param\" href=\"#\">
                                                        <span class=\"op-menu-item\">
                                                            <span class=\"op-search-param-checkmark\">
                                                                <i class=\"fa fa-check\"></i>
                                                            </span>
                                                            
                                                                
                                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The north-based ring incidence angle at the center of the ring system. This is the angle measured from the local surface normal vector on the north side of the ring plane to the direction of the incoming photon. It is &gt; 90 degrees when the light source illuminates the south face of the rings. This value is defined by the geometry during the time of the observation; it is independent of the field of view. Both the minimum and maximum north-based ring incidence angles are stored for each observation and the search can be made more specific using the any/all/only modifiers. See Help/FAQ for more information.\"></i>
                                                                
                                                                <span>Ring Center North-Based Incidence</span>
                                                            
                                                            
                                                        </span>
                                                    </a>
                                                </li>
                                            
                                        
                                            
                                                <li class=\"list-group-item py-0 ps-0\">
                                                    <a data-label=\"
                                                        
                                                            Ring Center North-Based Emission
                                                        
                                                        \" data-qualifiedlabel=\"
                                                        
                                                            Ring Center North-Based Emission [Ring]
                                                        
                                                      \"
                                                      data-dispunit=\"degrees\"
                                                      data-defaultunit=\"degrees\"
                                                      data-availunits=\"{&#x27;degrees&#x27;: &#x27;degrees&#x27;, &#x27;radians&#x27;: &#x27;radians&#x27;}\"
                                                      data-slug=\"RINGGEOringcenternorthbasedemission\" class=\"op-search-param\" href=\"#\">
                                                        <span class=\"op-menu-item\">
                                                            <span class=\"op-search-param-checkmark\">
                                                                <i class=\"fa fa-check\"></i>
                                                            </span>
                                                            
                                                                
                                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The north-based ring emission angle at the center of the ring system. This is the angle measured from the local surface normal vector on the north side of the ring plane to the direction of the outgoing photon to the observer. It is &lt; 90 degrees on the north side of the ring plane and &gt; 90 degrees on the south side. This value is defined by the geometry during the time of the observation; it is independent of the field of view. Both the minimum and maximum north-based ring emission angles are stored for each observation and the search can be made more specific using the any/all/only modifiers. See Help/FAQ for more information.\"></i>
                                                                
                                                                <span>Ring Center North-Based Emission</span>
                                                            
                                                            
                                                        </span>
                                                    </a>
                                                </li>
                                            
                                        
                                            
                                                <li class=\"list-group-item py-0 ps-0\">
                                                    <a data-label=\"
                                                        
                                                            Ring Center Opening Angle to Sun
                                                        
                                                        \" data-qualifiedlabel=\"
                                                        
                                                            Ring Center Opening Angle to Sun [Ring]
                                                        
                                                      \"
                                                      data-dispunit=\"degrees\"
                                                      data-defaultunit=\"degrees\"
                                                      data-availunits=\"{&#x27;degrees&#x27;: &#x27;degrees&#x27;, &#x27;radians&#x27;: &#x27;radians&#x27;}\"
                                                      data-slug=\"RINGGEOsolarringopeningangle\" class=\"op-search-param\" href=\"#\">
                                                        <span class=\"op-menu-item\">
                                                            <span class=\"op-search-param-checkmark\">
                                                                <i class=\"fa fa-check\"></i>
                                                            </span>
                                                            
                                                                
                                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The solar ring opening angle at the center of the ring system. This is the angle from the ring plane to the direction of incoming photon from the Sun (or other light source in the case of an occultation). It is positive on the north side of the ring plane and negative on the south side. This value is defined by the geometry during the time of the observation; it is independent of the field of view. Both the minimum and maximum north-based ring emission angles are stored for each observation and the search can be made more specific using the any/all/only modifiers. See Help/FAQ for more information.\"></i>
                                                                
                                                                <span>Ring Center Opening Angle to Sun</span>
                                                            
                                                            
                                                        </span>
                                                    </a>
                                                </li>
                                            
                                        
                                            
                                                <li class=\"list-group-item py-0 ps-0\">
                                                    <a data-label=\"
                                                        
                                                            Ring Center Opening Angle to Observer
                                                        
                                                        \" data-qualifiedlabel=\"
                                                        
                                                            Ring Center Opening Angle to Observer [Ring]
                                                        
                                                      \"
                                                      data-dispunit=\"degrees\"
                                                      data-defaultunit=\"degrees\"
                                                      data-availunits=\"{&#x27;degrees&#x27;: &#x27;degrees&#x27;, &#x27;radians&#x27;: &#x27;radians&#x27;}\"
                                                      data-slug=\"RINGGEOobserverringopeningangle\" class=\"op-search-param\" href=\"#\">
                                                        <span class=\"op-menu-item\">
                                                            <span class=\"op-search-param-checkmark\">
                                                                <i class=\"fa fa-check\"></i>
                                                            </span>
                                                            
                                                                
                                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The observed ring opening angle at the center of the ring system. This is the angle from the ring plane to the direction of outgoing photon to the observer. It is positive on the north side of the ring plane and negative on the south side. This value is defined by the geometry during the time of the observation; it is independent of the field of view. Both the minimum and maximum observed ring opening angles are stored for each observation and the search can be made more specific using the any/all/only modifiers. See Help/FAQ for more information.\"></i>
                                                                
                                                                <span>Ring Center Opening Angle to Observer</span>
                                                            
                                                            
                                                        </span>
                                                    </a>
                                                </li>
                                            
                                         
                                    </ul>
                                </li>
                            
                                <li class=\"list-group-item py-0 ps-0\">
                                    <a href=\"#search-submenu-obs_ring_geometry-edge-on-viewing-geometry\" data-bs-toggle=\"collapse\" aria-expanded=\"false\" class=\"dropdown-toggle op-submenu-category collapsed\" data-cat=\"obs_ring_geometry-edge-on-viewing-geometry\">
                                        <span class=\"menu-text title\">Edge-On Viewing Geometry&nbsp;<span class=\"op-menu-arrow\"></span></span>
                                    </a>
                                    <ul class=\"list-group list-group-flush submenu collapse \" id=\"search-submenu-obs_ring_geometry-edge-on-viewing-geometry\">
                                        
                                            
                                                <li class=\"list-group-item py-0 ps-0\">
                                                    <a data-label=\"
                                                        
                                                            Edge-On Radius
                                                        
                                                        \" data-qualifiedlabel=\"
                                                        
                                                            Edge-On Radius [Ring]
                                                        
                                                      \"
                                                      data-dispunit=\"km\"
                                                      data-defaultunit=\"km\"
                                                      data-availunits=\"{&#x27;km&#x27;: &#x27;km&#x27;, &#x27;m&#x27;: &#x27;m&#x27;, &#x27;jupiterradii&#x27;: &#x27;Rj (71492)&#x27;, &#x27;saturnradii&#x27;: &#x27;Rs (60330)&#x27;, &#x27;neptuneradii&#x27;: &#x27;Rn (25225)&#x27;, &#x27;uranusradii&#x27;: &#x27;Ru (25559)&#x27;}\"
                                                      data-slug=\"RINGGEOedgeonradius\" class=\"op-search-param\" href=\"#\">
                                                        <span class=\"op-menu-item\">
                                                            <span class=\"op-search-param-checkmark\">
                                                                <i class=\"fa fa-check\"></i>
                                                            </span>
                                                            
                                                                
                                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The range of edge-on ring radii in the field of view. The ring radius is the distance from the planet&#x27;s rotation pole to the edge-on intercept point. Edge-on intercept geometry is optimized for describing observations of planetary rings obtained from viewpoints close to the ring plane. It employs cylindrical coordinates (radius, altitude, longitude), where radius values are measured from the ring rotation pole and altitude is normal to the ring plane. The intercept is defined as the point along a line of sight where that line is tangent to a cylinder with a particular radius. Edge-on intercept points that are obscured by the planet or a moon within the observed field of view are ignored. For observations capturing reflected sunlight (i.e., with wavelengths in the visual or near-infrared), intercept points that are shadowed by the planet are also ignored. Both the minimum and maximum edge-on ring radii are stored for each observation and the search can be made more specific using the any/all/only modifiers. See Help/FAQ for more information.\"></i>
                                                                
                                                                <span>Edge-On Radius</span>
                                                            
                                                            
                                                        </span>
                                                    </a>
                                                </li>
                                            
                                        
                                            
                                                <li class=\"list-group-item py-0 ps-0\">
                                                    <a data-label=\"
                                                        
                                                            Edge-On Longitude WRT Ascending Node
                                                        
                                                        \" data-qualifiedlabel=\"
                                                        
                                                            Edge-On Longitude WRT Ascending Node [Ring]
                                                        
                                                      \"
                                                      data-dispunit=\"degrees\"
                                                      data-defaultunit=\"degrees\"
                                                      data-availunits=\"{&#x27;degrees&#x27;: &#x27;degrees&#x27;, &#x27;dms&#x27;: &#x27;DMS&#x27;, &#x27;radians&#x27;: &#x27;radians&#x27;}\"
                                                      data-slug=\"RINGGEOedgeonascendinglongitude\" class=\"op-search-param\" href=\"#\">
                                                        <span class=\"op-menu-item\">
                                                            <span class=\"op-search-param-checkmark\">
                                                                <i class=\"fa fa-check\"></i>
                                                            </span>
                                                            
                                                                
                                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The range of edge-on ring longitudes (based on the ascending node) in the field of view. Edge-on ring longitude is the inertial longitude of the edge-on intercept point. Longitudes increase in the prograde direction. Values are defined from the ascending node of the ring system&#x27;s invariable plane along the ring plane. Edge-on intercept geometry is optimized for describing observations of planetary rings obtained from viewpoints close to the ring plane. It employs cylindrical coordinates (radius, altitude, longitude), where radius values are measured from the ring rotation pole and altitude is normal to the ring plane. The intercept is defined as the point along a line of sight where that line is tangent to a cylinder with a particular radius. Edge-on intercept points that are obscured by the planet or a moon within the observed field of view are ignored. For observations capturing reflected sunlight (i.e., with wavelengths in the visual or near-infrared), intercept points that are shadowed by the planet are also ignored. Note that edge-on ring longitude wraps around from 360 to 0 and thus both minimum and maximum values must be specified for a valid search. OPUS will also allow you to search from a larger number to a smaller number, implying the edge-on ring longitude must wrap around. Both the minimum and maximum ring longitudes are stored for each observation and the search can be made more specific using the any/all/only modifiers. See Help/FAQ for more information.\"></i>
                                                                
                                                                <span>Edge-On Longitude WRT Ascending Node</span>
                                                            
                                                            
                                                        </span>
                                                    </a>
                                                </li>
                                            
                                        
                                            
                                                <li class=\"list-group-item py-0 ps-0\">
                                                    <a data-label=\"
                                                        
                                                            Edge-On Longitude WRT RA=0
                                                        
                                                        \" data-qualifiedlabel=\"
                                                        
                                                            Edge-On Longitude WRT RA=0 [Ring]
                                                        
                                                      \"
                                                      data-dispunit=\"degrees\"
                                                      data-defaultunit=\"degrees\"
                                                      data-availunits=\"{&#x27;degrees&#x27;: &#x27;degrees&#x27;, &#x27;dms&#x27;: &#x27;DMS&#x27;, &#x27;radians&#x27;: &#x27;radians&#x27;}\"
                                                      data-slug=\"RINGGEOedgeonJ2000longitude\" class=\"op-search-param\" href=\"#\">
                                                        <span class=\"op-menu-item\">
                                                            <span class=\"op-search-param-checkmark\">
                                                                <i class=\"fa fa-check\"></i>
                                                            </span>
                                                            
                                                                
                                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The range of edge-on ring longitudes (based on RA=0) in the field of view. Edge-on ring longitude is the inertial longitude of the edge-on intercept point. Longitudes increase in the prograde direction. Values are defined by a broken angle from the J2000 First Point of Aries (right ascension = 0), along the J2000 x-y plane to the ascending node of the ring system&#x27;s invariable plane, and then along the ring plane. Edge-on intercept geometry is optimized for describing observations of planetary rings obtained from viewpoints close to the ring plane. It employs cylindrical coordinates (radius, altitude, longitude), where radius values are measured from the ring rotation pole and altitude is normal to the ring plane. The intercept is defined as the point along a line of sight where that line is tangent to a cylinder with a particular radius. Edge-on intercept points that are obscured by the planet or a moon within the observed field of view are ignored. For observations capturing reflected sunlight (i.e., with wavelengths in the visual or near-infrared), intercept points that are shadowed by the planet are also ignored. Note that edge-on ring longitude wraps around from 360 to 0 and thus both minimum and maximum values must be specified for a valid search. OPUS will also allow you to search from a larger number to a smaller number, implying the edge-on ring longitude must wrap around. Both the minimum and maximum ring longitudes are stored for each observation and the search can be made more specific using the any/all/only modifiers. See Help/FAQ for more information.\"></i>
                                                                
                                                                <span>Edge-On Longitude WRT RA=0</span>
                                                            
                                                            
                                                        </span>
                                                    </a>
                                                </li>
                                            
                                        
                                            
                                                <li class=\"list-group-item py-0 ps-0\">
                                                    <a data-label=\"
                                                        
                                                            Edge-On Solar Hour Angle
                                                        
                                                        \" data-qualifiedlabel=\"
                                                        
                                                            Edge-On Solar Hour Angle [Ring]
                                                        
                                                      \"
                                                      data-dispunit=\"degrees\"
                                                      data-defaultunit=\"degrees\"
                                                      data-availunits=\"{&#x27;degrees&#x27;: &#x27;degrees&#x27;, &#x27;dms&#x27;: &#x27;DMS&#x27;, &#x27;radians&#x27;: &#x27;radians&#x27;}\"
                                                      data-slug=\"RINGGEOedgeonsolarhourangle\" class=\"op-search-param\" href=\"#\">
                                                        <span class=\"op-menu-item\">
                                                            <span class=\"op-search-param-checkmark\">
                                                                <i class=\"fa fa-check\"></i>
                                                            </span>
                                                            
                                                                
                                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The range of edge-on solar hour angles in the field of view. Edge-on solar hour angle is the longitude of the edge-on intercept point relative to the anti-solar direction. At 90 degrees, the ring particles are moving toward the Sun, whereas at 270 degrees they are moving away. Edge-on intercept geometry is optimized for describing observations of planetary rings obtained from viewpoints close to the ring plane. It employs cylindrical coordinates (radius, altitude, longitude), where radius values are measured from the ring rotation pole and altitude is normal to the ring plane. The intercept is defined as the point along a line of sight where that line is tangent to a cylinder with a particular radius. Edge-on intercept points that are obscured by the planet or a moon within the observed field of view are ignored. For observations capturing reflected sunlight (i.e., with wavelengths in the visual or near-infrared), intercept points that are shadowed by the planet are also ignored. Note that edge-on solar hour angle wraps around from 360 to 0 and thus both minimum and maximum values must be specified for a valid search. OPUS will also allow you to search from a larger number to a smaller number, implying the edge-on solar hour angle must wrap around. Both the minimum and maximum ring longitudes are stored for each observation and the search can be made more specific using the any/all/only modifiers. See Help/FAQ for more information.\"></i>
                                                                
                                                                <span>Edge-On Solar Hour Angle</span>
                                                            
                                                            
                                                        </span>
                                                    </a>
                                                </li>
                                            
                                        
                                            
                                                <li class=\"list-group-item py-0 ps-0\">
                                                    <a data-label=\"
                                                        
                                                            Edge-On Distance to Ring Intercept
                                                        
                                                        \" data-qualifiedlabel=\"
                                                        
                                                            Edge-On Distance to Ring Intercept [Ring]
                                                        
                                                      \"
                                                      data-dispunit=\"km\"
                                                      data-defaultunit=\"km\"
                                                      data-availunits=\"{&#x27;km&#x27;: &#x27;km&#x27;, &#x27;m&#x27;: &#x27;m&#x27;, &#x27;jupiterradii&#x27;: &#x27;Rj (71492)&#x27;, &#x27;saturnradii&#x27;: &#x27;Rs (60330)&#x27;, &#x27;neptuneradii&#x27;: &#x27;Rn (25225)&#x27;, &#x27;uranusradii&#x27;: &#x27;Ru (25559)&#x27;}\"
                                                      data-slug=\"RINGGEOrangetoedgeonpoint\" class=\"op-search-param\" href=\"#\">
                                                        <span class=\"op-menu-item\">
                                                            <span class=\"op-search-param-checkmark\">
                                                                <i class=\"fa fa-check\"></i>
                                                            </span>
                                                            
                                                                
                                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The range of edge-on intercept distances in the field of view. The edge-on intercept distance is distance from the observer to the edge-on intercept point. Edge-on intercept geometry is optimized for describing observations of planetary rings obtained from viewpoints close to the ring plane. It employs cylindrical coordinates (radius, altitude, longitude), where radius values are measured from the ring rotation pole and altitude is normal to the ring plane. The intercept is defined as the point along a line of sight where that line is tangent to a cylinder with a particular radius. Edge-on intercept points that are obscured by the planet or a moon within the observed field of view are ignored. For observations capturing reflected sunlight (i.e., with wavelengths in the visual or near-infrared), intercept points that are shadowed by the planet are also ignored. Both the minimum and maximum edge-on intercept distances are stored for each observation and the search can be made more specific using the any/all/only modifiers. See Help/FAQ for more information.\"></i>
                                                                
                                                                <span>Edge-On Distance to Ring Intercept</span>
                                                            
                                                            
                                                        </span>
                                                    </a>
                                                </li>
                                            
                                        
                                            
                                                <li class=\"list-group-item py-0 ps-0\">
                                                    <a data-label=\"
                                                        
                                                            Edge-On Radial Resolution
                                                        
                                                        \" data-qualifiedlabel=\"
                                                        
                                                            Edge-On Radial Resolution [Ring]
                                                        
                                                      \"
                                                      data-dispunit=\"km/pixel\"
                                                      data-defaultunit=\"km_pixel\"
                                                      data-availunits=\"{&#x27;km_pixel&#x27;: &#x27;km/pixel&#x27;, &#x27;m_pixel&#x27;: &#x27;m/pixel&#x27;}\"
                                                      data-slug=\"RINGGEOedgeonradialresolution\" class=\"op-search-param\" href=\"#\">
                                                        <span class=\"op-menu-item\">
                                                            <span class=\"op-search-param-checkmark\">
                                                                <i class=\"fa fa-check\"></i>
                                                            </span>
                                                            
                                                                
                                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The range of edge-on radial resolutions in the field of view. The edge-on radial resolution is the gradient of the edge-on ring radius. It is equal to the largest change in the radius resulting from a one-pixel shift of the line of sight. In practice, it defines the approximate size of the narrowest ring feature that can be resolved. Edge-on intercept geometry is optimized for describing observations of planetary rings obtained from viewpoints close to the ring plane. It employs cylindrical coordinates (radius, altitude, longitude), where radius values are measured from the ring rotation pole and altitude is normal to the ring plane. The intercept is defined as the point along a line of sight where that line is tangent to a cylinder with a particular radius. Edge-on intercept points that are obscured by the planet or a moon within the observed field of view are ignored. For observations capturing reflected sunlight (i.e., with wavelengths in the visual or near-infrared), intercept points that are shadowed by the planet are also ignored. Both the minimum and maximum edge-on ring resolutions are stored for each observation and the search can be made more specific using the any/all/only modifiers. See Help/FAQ for more information.\"></i>
                                                                
                                                                <span>Edge-On Radial Resolution</span>
                                                            
                                                            
                                                        </span>
                                                    </a>
                                                </li>
                                            
                                        
                                            
                                                <li class=\"list-group-item py-0 ps-0\">
                                                    <a data-label=\"
                                                        
                                                            Edge-On Altitude
                                                        
                                                        \" data-qualifiedlabel=\"
                                                        
                                                            Edge-On Altitude [Ring]
                                                        
                                                      \"
                                                      data-dispunit=\"km\"
                                                      data-defaultunit=\"km\"
                                                      data-availunits=\"{&#x27;km&#x27;: &#x27;km&#x27;, &#x27;m&#x27;: &#x27;m&#x27;, &#x27;au&#x27;: &#x27;AU&#x27;}\"
                                                      data-slug=\"RINGGEOedgeonaltitude\" class=\"op-search-param\" href=\"#\">
                                                        <span class=\"op-menu-item\">
                                                            <span class=\"op-search-param-checkmark\">
                                                                <i class=\"fa fa-check\"></i>
                                                            </span>
                                                            
                                                                
                                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The range of edge-on ring altiudes in the field of view. The edge-on ring altitude is the distance from the ring plane to the edge-on intercept point. The value is positive on the side of the ring plane defined by prograde rotation; note that this is the north side of the ring plane for Jupiter, Saturn and Neptune, but the IAU-defined south side for Uranus. Edge-on intercept geometry is optimized for describing observations of planetary rings obtained from viewpoints close to the ring plane. It employs cylindrical coordinates (radius, altitude, longitude), where radius values are measured from the ring rotation pole and altitude is normal to the ring plane. The intercept is defined as the point along a line of sight where that line is tangent to a cylinder with a particular radius. Edge-on intercept points that are obscured by the planet or a moon within the observed field of view are ignored. For observations capturing reflected sunlight (i.e., with wavelengths in the visual or near-infrared), intercept points that are shadowed by the planet are also ignored. Both the minimum and maximum edge-on ring altitudes are stored for each observation and the search can be made more specific using the any/all/only modifiers. See Help/FAQ for more information.\"></i>
                                                                
                                                                <span>Edge-On Altitude</span>
                                                            
                                                            
                                                        </span>
                                                    </a>
                                                </li>
                                            
                                         
                                    </ul>
                                </li>
                            
                                <li class=\"list-group-item py-0 ps-0\">
                                    <a href=\"#search-submenu-obs_ring_geometry-image-geometry\" data-bs-toggle=\"collapse\" aria-expanded=\"false\" class=\"dropdown-toggle op-submenu-category collapsed\" data-cat=\"obs_ring_geometry-image-geometry\">
                                        <span class=\"menu-text title\">Image Geometry&nbsp;<span class=\"op-menu-arrow\"></span></span>
                                    </a>
                                    <ul class=\"list-group list-group-flush submenu collapse \" id=\"search-submenu-obs_ring_geometry-image-geometry\">
                                        
                                            
                                                <li class=\"list-group-item py-0 ps-0\">
                                                    <a data-label=\"
                                                        
                                                            Ring Diameter in Pixels
                                                        
                                                        \" data-qualifiedlabel=\"
                                                        
                                                            Ring Diameter in Pixels [Ring]
                                                        
                                                      \"
                                                      data-dispunit=\"\"
                                                      data-defaultunit=\"\"
                                                      data-availunits=\"\"
                                                      data-slug=\"RINGGEOringdiameterpixels\" class=\"op-search-param\" href=\"#\">
                                                        <span class=\"op-menu-item\">
                                                            <span class=\"op-search-param-checkmark\">
                                                                <i class=\"fa fa-check\"></i>
                                                            </span>
                                                            
                                                                
                                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The apparent diameter in pixels of the main rings along their longest projected direction. This value is defined by the geometry during the time of the observation; it is independent of the field of view.\"></i>
                                                                
                                                                <span>Ring Diameter in Pixels</span>
                                                            
                                                            
                                                        </span>
                                                    </a>
                                                </li>
                                            
                                        
                                            
                                                <li class=\"list-group-item py-0 ps-0\">
                                                    <a data-label=\"
                                                        
                                                            Center X Coordinate
                                                        
                                                        \" data-qualifiedlabel=\"
                                                        
                                                            Center X Coordinate [Ring]
                                                        
                                                      \"
                                                      data-dispunit=\"\"
                                                      data-defaultunit=\"\"
                                                      data-availunits=\"\"
                                                      data-slug=\"RINGGEOcenterxcoordinate\" class=\"op-search-param\" href=\"#\">
                                                        <span class=\"op-menu-item\">
                                                            <span class=\"op-search-param-checkmark\">
                                                                <i class=\"fa fa-check\"></i>
                                                            </span>
                                                            
                                                                
                                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The position of the center of the ring plane in the image in the X or sample direction. A fractional value of 0.5 indicates the center of the pixel. This value is defined by the geometry during the time of the observation; it is independent of the field of view.\"></i>
                                                                
                                                                <span>Center X Coordinate</span>
                                                            
                                                            
                                                        </span>
                                                    </a>
                                                </li>
                                            
                                        
                                            
                                                <li class=\"list-group-item py-0 ps-0\">
                                                    <a data-label=\"
                                                        
                                                            Center Y Coordinate
                                                        
                                                        \" data-qualifiedlabel=\"
                                                        
                                                            Center Y Coordinate [Ring]
                                                        
                                                      \"
                                                      data-dispunit=\"\"
                                                      data-defaultunit=\"\"
                                                      data-availunits=\"\"
                                                      data-slug=\"RINGGEOcenterycoordinate\" class=\"op-search-param\" href=\"#\">
                                                        <span class=\"op-menu-item\">
                                                            <span class=\"op-search-param-checkmark\">
                                                                <i class=\"fa fa-check\"></i>
                                                            </span>
                                                            
                                                                
                                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The position of the center of the ring plane in the image in the Y or line direction. A fractional value of 0.5 indicates the center of the pixel. This value is defined by the geometry during the time of the observation; it is independent of the field of view.\"></i>
                                                                
                                                                <span>Center Y Coordinate</span>
                                                            
                                                            
                                                        </span>
                                                    </a>
                                                </li>
                                            
                                         
                                    </ul>
                                </li>
                            
                                <li class=\"list-group-item py-0 ps-0\">
                                    <a href=\"#search-submenu-obs_ring_geometry-pole\" data-bs-toggle=\"collapse\" aria-expanded=\"false\" class=\"dropdown-toggle op-submenu-category collapsed\" data-cat=\"obs_ring_geometry-pole\">
                                        <span class=\"menu-text title\">Pole&nbsp;<span class=\"op-menu-arrow\"></span></span>
                                    </a>
                                    <ul class=\"list-group list-group-flush submenu collapse \" id=\"search-submenu-obs_ring_geometry-pole\">
                                        
                                            
                                                <li class=\"list-group-item py-0 ps-0\">
                                                    <a data-label=\"
                                                        
                                                            Ring Pole Clock Angle
                                                        
                                                        \" data-qualifiedlabel=\"
                                                        
                                                            Ring Pole Clock Angle [Ring]
                                                        
                                                      \"
                                                      data-dispunit=\"degrees\"
                                                      data-defaultunit=\"degrees\"
                                                      data-availunits=\"{&#x27;degrees&#x27;: &#x27;degrees&#x27;, &#x27;radians&#x27;: &#x27;radians&#x27;}\"
                                                      data-slug=\"RINGGEOringpoleclockangle\" class=\"op-search-param\" href=\"#\">
                                                        <span class=\"op-menu-item\">
                                                            <span class=\"op-search-param-checkmark\">
                                                                <i class=\"fa fa-check\"></i>
                                                            </span>
                                                            
                                                                
                                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The projected direction of the ring system&#x27;s pole (angular momentum) vector on the sky, measured as an angle clockwise from celestial north (i.e., toward celestial west). This value is defined by the geometry during the time of the observation; it is independent of the field of view.\"></i>
                                                                
                                                                <span>Ring Pole Clock Angle</span>
                                                            
                                                            
                                                        </span>
                                                    </a>
                                                </li>
                                            
                                        
                                            
                                                <li class=\"list-group-item py-0 ps-0\">
                                                    <a data-label=\"
                                                        
                                                            Ring Pole Position Angle
                                                        
                                                        \" data-qualifiedlabel=\"
                                                        
                                                            Ring Pole Position Angle [Ring]
                                                        
                                                      \"
                                                      data-dispunit=\"degrees\"
                                                      data-defaultunit=\"degrees\"
                                                      data-availunits=\"{&#x27;degrees&#x27;: &#x27;degrees&#x27;, &#x27;radians&#x27;: &#x27;radians&#x27;}\"
                                                      data-slug=\"RINGGEOringpolepositionangle\" class=\"op-search-param\" href=\"#\">
                                                        <span class=\"op-menu-item\">
                                                            <span class=\"op-search-param-checkmark\">
                                                                <i class=\"fa fa-check\"></i>
                                                            </span>
                                                            
                                                                
                                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The projected direction of the ring system&#x27;s pole (angular momentum) vector on the sky, measured as an angle counterclockwise from celestial north (i.e., toward celestial east). This value is defined by the geometry during the time of the observation; it is independent of the field of view.\"></i>
                                                                
                                                                <span>Ring Pole Position Angle</span>
                                                            
                                                            
                                                        </span>
                                                    </a>
                                                </li>
                                            
                                         
                                    </ul>
                                </li>
                            
                                <li class=\"list-group-item py-0 ps-0\">
                                    <a href=\"#search-submenu-obs_ring_geometry-timing\" data-bs-toggle=\"collapse\" aria-expanded=\"false\" class=\"dropdown-toggle op-submenu-category collapsed\" data-cat=\"obs_ring_geometry-timing\">
                                        <span class=\"menu-text title\">Timing&nbsp;<span class=\"op-menu-arrow\"></span></span>
                                    </a>
                                    <ul class=\"list-group list-group-flush submenu collapse \" id=\"search-submenu-obs_ring_geometry-timing\">
                                        
                                            
                                                <li class=\"list-group-item py-0 ps-0\">
                                                    <a data-label=\"
                                                        
                                                            Ring Intercept Time
                                                        
                                                        \" data-qualifiedlabel=\"
                                                        
                                                            Ring Intercept Time [Ring]
                                                        
                                                      \"
                                                      data-dispunit=\"YMDhms\"
                                                      data-defaultunit=\"ymdhms\"
                                                      data-availunits=\"{&#x27;ymdhms&#x27;: &#x27;YMDhms&#x27;, &#x27;ydhms&#x27;: &#x27;YDhms&#x27;, &#x27;jd&#x27;: &#x27;JD&#x27;, &#x27;jed&#x27;: &#x27;JED&#x27;, &#x27;mjd&#x27;: &#x27;MJD&#x27;, &#x27;mjed&#x27;: &#x27;MJED&#x27;, &#x27;et&#x27;: &#x27;SPICE ET&#x27;}\"
                                                      data-slug=\"RINGGEOringintercepttime\" class=\"op-search-param\" href=\"#\">
                                                        <span class=\"op-menu-item\">
                                                            <span class=\"op-search-param-checkmark\">
                                                                <i class=\"fa fa-check\"></i>
                                                            </span>
                                                            
                                                                
                                                                    <i class=\"fas fa-info-circle op-menu-tooltip\" title=\"The range of ring intercept times. The ring intercept time is the time the photon leaves the ring plane before being received by the observer. Both the minimum and maximum ring intercept times are stored for each observation and the search can be made more specific using the any/all/only modifiers. See Help/FAQ for more information.\"></i>
                                                                
                                                                <span>Ring Intercept Time</span>
                                                            
                                                            
                                                        </span>
                                                    </a>
                                                </li>
                                            
                                         
                                    </ul>
                                </li>
                             

                        
                     
                 
            </ul>
        </li>
         
    </ul>

", "reqno": 5}