<option value="HR">HR diagram</option>
<option value="2MASS">2MASS</option>
<option value="CFHT">CFHT</option>
<option value="DECam">DECam</option>
<option value="Euclid">Euclid (VIS+NISP)</option>
<option value="GAIA-DR1">GAIA DR1</option>
<option value="GAIA-DR2">GAIA DR2</option>
<option value="GAIA-EDR3">GAIA EDR3</option>
<option value="GAIA-DR3">GAIA DR3</option>
<option value="GALEX">GALEX</option>
<option value="HAWKI">VLT HAWK-I</option>
<option value="Tycho">Hipparcos+Tycho</option>                        
<option value="WFPC2">HST (WFPC2)</option>
<option value="ACS">HST (ACS)</option>
<option value="WFC3">HST (WFC3)</option>
<option value="JPLUS">J-PLUS</option>
<option value="Johnson-Cousins">Johnson-Cousins</option>
<option value="JWST_NIRCam_PostLaunch">JWST (NIRCam Vega ZP)</option>
<option value="JWST_NIRCam_zpS">JWST (NIRCam Sirio ZP)</option>
<option value="JWST_NIRISS">JWST (NIRISS)</option>
<option value="Kepler">Kepler</option>
<option value="PanSTARSS1">PanSTARSS1</option>
<option value="Roman_AB">Roman (AB mag.)</option>
<option value="Roman_VEGA">Roman (Vega mag.)</option>
<option value="SAGE">SAGE</option>
<option value="SkyMapper">SkyMapper</option>
<option value="Sloan">Sloan</option>
<option value="Stromgren">Strömgren</option>
<option value="Subaru_HSC">Subaru (HSC)</option>
<option value="SWIFT_UVOT">SWIFT (UVOT)</option>
<option value="TESS">TESS</option>
<option value="UVIT">UVIT (FUV+NUV+VIS)</option>                        
<option value="LSST">Vera C. Rubin Obs. (LSST)</option>
<option value="VISTA">VISTA</option>
<option value="WFIRST">WFIRST (WFI)</option>
<option value="WISE">WISE</option>
