Re: Extracting green channel from FITS

Posted by han.k on Mar 03, 2022; 10:30am
URL: http://astroimagej.170.s1.nabble.com/Extracting-green-channel-from-FITS-tp1750p1818.html

If you find keyword:
ROWORDER= 'BOTTOM-UP'          / Order of the rows in image array

Then the image is flipped vertical. So

RG
GB

becomes

GB
RG

Similar with XBAYROFF and YBARYOFF, They are default zero. Just check if these values are odd or even and shift/flip if odd.

All to maintain the RGGB definition for a camera model. :(