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That "last little bit" can sometimes give a notecably better result. I have taken to looking at the image stats in SGP as the sequence progresses, the plan for future sessions is to take more subs than I intend to stack, then dump any with a satellite trail and then figure out an arbritrary value for average HFD or FWHM (Focus) and median pixel avlue (Background brightness) and toss any subs that fail either of those. Better to integrate 40 really good subs than 60 "OK" ones.
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