Comment 2 for bug 1208143
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| Ariane Stevens (sjstar) wrote Re: feature request for Angle Measurement | #2 |
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1b1ed1a
(Get the code!)
Just a point. I think this person means position angle - the angle north through east, where 0 deg is north.
It is simply calculated by PA = tan^-1 x (15 x Delta RA x cos Dec. / Delta Dec.)
With Delta RA in seconds (NOT arcsec), Dec= in arcsec
For separations larger than 2 degrees, the precision likely decreases.
Also you would also have to take precession into account.