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Old 10-11-2018, 08:42 AM
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Atmos (Colin)
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Join Date: Aug 2011
Location: Melbourne
Posts: 6,980
I usually do 25 flats and I’m generally using 12bit mode which is Gain 75-80 which gets me to about 50,000 e-.
For astrometric purposes 1,000,000 e- is recommended but if all you’re wanting to do is remove vignetting and dust motes then it isn’t that important
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