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Hi all,
Since a couple of months, I have been getting very weird integration results on some (not all) stacks ... The stacked result looks a little bit like a fisheye lens picture.
There must be a setting which I changed, but I have no idea what. It is not the problem with the FAT32 filesystem, and I have been getting many good results with no problems in the past.
When I change the registration mode to mosaic, the problem seems to be solved, but the stack still has a small barrel shape, if you look at the corners. It doesn't matter if I add calibration files or not, and I have the problem with all my equipment, be it corrected telescope pictures, or camera with normal lens like in the pictures I attached.
Does anybody have an idea what kind of setting could cause this behavior?
Edit: a test with DSS with the same files resulted in a completely normal stack with small alignement drift
Problem stack
Stack with mosaic registration:
I also get these distortions occasionally.
Sometimes they are very strange and sometimes even amusing.
Sometimes switching to mosaic helps.
Sometimes enabling or disabling dynamic distortions helps.
Sometimes selecting a different registration reference helps.
