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Best ADU for flats?
Hello. Could someone help me with flats. What would be the optimum ADU for flats for my unmodded canon 600D. I believe that is a 14-bit ADC. So, I think the maximum ADU is about 16000.
I analysed one of the flats that I had been using with ASTAP. It's background ADU was 2467. This seems to get rid of dust motes, but will it get rid of other problems in the optical chain. I sometimes get a halo around a central object in the stacked image.
Thank for your help ,Rob.
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