If you use CCD stack and have many subs, the least tedious way is to wait till the data reject step and just delete the ones with the most red (red indicates deviation from the average of all the other subs). you'd be surprised at how many subs look great visually but are actually crap. generally, though, it's best to leave marginal subs in, the reject algorithm will only add good data.
Last edited by Bassnut; 28-08-2021 at 06:24 PM.
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