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Old 08-10-2021, 04:01 PM
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The_bluester (Paul)
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Join Date: Feb 2011
Location: Kilmore, Australia
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Have those images come in in the right orientations, the ones for the top left look like a bottom right, and the top rights look like a bottom left. Ignoring that, if all four corners look like that it does look like more spacing might be required, I reckon the ones with the extra 2mm look slightly better. Have you got more spacers you can insert? Like remove the 2mm and put in 5mm even just to look for a definite change, you would hope if you go far enough to get the star shapes in the corners to at least go from warp speed to fishbowl, then you can say for certain than you have too much spacing and work your way back.

Also, how are you focusing? I have found the best results when chasing spacing or tilt to focus carefully on a single, centered star. If you are using something like SGP and focusing on the average across the field it can make aberrations or field curvature harder to see.
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