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What is the best way to do Darks?
Hi all, I thought it was time to update my CCD dark library. Done a bit of research and can't determine whether I just do darks for 20mins (the longest subs I do) and then scale them using some PI wizardry I have read about or whether I do what I did in the past and do darks for each sub length I am likely to use 2,5,10,20 mins etc ?
Second question is how many darks should I be doing for each sub length. I have read advice from 3 to 50.
Note the camera in question is a SBIG STT-8300 mono (KAF8300 chip)
Cheers
Brett
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