Flats and mottling pattern in final stacked image

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diant
Posts: 22
Joined: Tue Apr 28, 2020 8:35 am

Re: Flats and mottling pattern in final stacked image

Post by diant » Thu May 21, 2020 8:30 am

admin wrote:
Wed May 20, 2020 7:38 pm
Thanks for sharing the info on how to correct this issue. If anyone works out the actual initial cause of that mottled pattern in the flat images, it would be very interesting to know about it. I just can't see any good reason for that sort of pattern to appear.
PRNU (photo-response non-uniformity)? May be the cause in it?

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