New user here and I love the software!
I am though encountering a very odd problem with the Flats FIT’s files coming out of SGPro. These flats are generated from a luminescent panel on a F7 180mm refractor exposed at around 27,000 ADU. They are pretty textbook and look fine visually.
When I attempt to calibrate these FIT’s images in Pixinsight I keep getting a warning “No flat frames have been selected to calibrate light frames” even though the files are properly selected. Thinking it may be a Pixinsight problem I did a comparison test in CCDStackt, and though the flat FIT’s files can be read they are not subtracting properly from the Light images. (Dust bunnies are still visible)
I do not appear to be having this problem with the bias and dark frames.
I am starting to wonder if there is something in the format of the Flat FIT’s files themselves being exported from SGPro. Either a variant of the FIT’s format that is not matching the Light frames or perhaps something in the file name format itself. Perhaps some output setting?
Has anyone encountered anything like this? I fully accept I could be doing something basically dumb!