Re: Extracting green channel from FITS

Posted by Bill Tschumy on Feb 23, 2022; 6:23pm
URL: http://astroimagej.170.s1.nabble.com/Extracting-green-channel-from-FITS-tp1750p1785.html

Sorry for the delay responding.  I have been out of town, focused on something else.

I asked the author of ASTAP what he does and he said it is exactly as you described it.  You average the two green pixels.  The resulting image is 1/2 x 1/2 the original size.