Re: Aperture size to optimise SNR

Posted by SCO on May 08, 2023; 1:12am
URL: http://astroimagej.170.s1.nabble.com/Aperture-size-to-optimise-SNR-tp2228p2232.html

Based on my tests, a set size for all images usually gives the best results, but not always.  Sometimes a variable aperture using the T1 radial profile will work slightly better, but the difference is seldom significant.  It depends mainly on the particular atmospheric conditions at the time.