Re: Extracting green channel from FITS

Posted by Bill Tschumy on Mar 02, 2022; 10:11pm
URL: http://astroimagej.170.s1.nabble.com/Extracting-green-channel-from-FITS-tp1750p1810.html

keastrid,

Thanks for the clarification.

I did hear back from Han the developer of ASTAP.  He has sent a request to join the AIJ forum so we can get this working the same.

In the meantime, he asked that I post these images.  He says:

The first is a marked up of the image from AstroImageJ. The left bottom pixel is position 1,1 as indicated.

https://sourceforge.net/p/astap-program/discussion/general/thread/f23b0d61db/7f13/attachment/image_RGGB_2.jpg

The second image is a special test file i made some time ago. RG means RGGB.  This is what you see if you specify RGGB pattern. Only the yellow marked is correct red, green, blue

https://sourceforge.net/p/astap-program/discussion/general/thread/f23b0d61db/c8b1/attachment/test%20RGGB.png

I'm not totally sure how these will resolve the issue, but maybe someone smarter than I can tell.