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Re: Extracting green channel from FITS

Posted by han.k on Mar 03, 2022; 8:25pm
URL: http://astroimagej.170.s1.nabble.com/Extracting-green-channel-from-FITS-tp1750p1825.html

Looking in my collection of FITS files downloaded from nova.astrometry.net (few hunderd files),  I found only two files with an XBAYROFF=1  There where many more with XBAYROFF=0. These two where created by SharpCap.

The brightest star in the file linked should be pretty red.  Strange enough Pixinsight, Siril make the sky purple. ASTAP and CCDCiel make a greenish sky. So here there is difference interpretation.

Since it is rare XBAYROFF=1 or odd, you could consider to skip reading XBAYROFF, YBAYROFF.  This makes it much more simple.  Keyword ROWORDER is now much more used.

Here is one file:
https://ufile.io/xbxzipg9

Han