Function astromXYZ( ra, dec, parallax )

Description:
Calculates Cartesian components of position from RA, Declination and parallax. This is a convenience function, equivalent to:
    polarXYZ(ra, dec, 1000./parallax)
 

Note that this performs distance scaling using a simple inversion of parallax, which is not in general reliable for parallaxes with non-negligable errors. Use at your own risk.

Parameters:
ra (floating point)
Right Ascension in degrees
dec (floating point)
Declination in degrees
parallax (floating point)
parallax in mas
Return Value (array of floating point):
3-element vector giving equatorial space coordinates in parsec
Examples:
Signature:
double[] astromXYZ(double, double, double)