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-Dithering between light frames will very likely fix this. A stack of closely aligned subs more often produces this effect. The subs will probably look OK.
There's plenty of online info above dithering and the reasons for it. Particularly with dslrs.
With and without shots - Canon dslr.
EDIT: basically, the idea is to avoid overlaying the same or nearby pixels frame to frame. Dithering by 10 - 15 pixels is the general recommendation.
Depending on your set up dithering can be as simple as random movement of the RA and / or DEC axis with the mount HC or automated with one of the dslr utilities. BEOS and similar.
Last edited by rcheshire; 24-08-2019 at 02:35 PM.
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