I finally got those 2 files - thanks for separating them.
I aligned them with various CCDstack and I see what you mean. The small stars are fairly static but the brighter ones are moving slightly.
I also did a star alignment in PixInsight and got the same result.
Odd. Is a lens loose in your lens cell or something? Odd its only on the brighter stars.
Greg.
Last edited by gregbradley; 10-02-2021 at 07:09 PM.
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