David,
Based on CCD inspector it looks like the colimation is out (7.2") on my scope causing the slight elongation in top left and bottom right. The tilt results reported tilt in X -0.1" and tilt in Y -0.1". Total tilt 4% @123 deg.
I'm expection a spacer set to arrive soon so I'll be able to try a few different spacings.
Peter
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