I think it's time to wonder!
You know those beautiful pictures from outer space?
They are black and white.
Do you know why you see them in color?
prokoudine, provided a hint.
https://mail.gnome.org/archives/gimp-user-list/2013-December/msg00225.htmlQuote:
In fact, the request for better FITS support in GIMP came from Joseph
DePasquale, a science imager at Smithsonian astrophysical observatory,
member of the Chandra team. Joseph maintains a series of FITS
processing tutorials
(
http://chandra.harvard.edu/photo/openFITS/casa.html) involving GIMP
and G’MIC.
This tutorial was interesting to try because I had no experience with FITS files. I'd give it a go if you get a chance (20 min). One change in the tutorial, G'MIC | Repair | Smooth [anisotropic].
Merry Christmas, rdgracer71.