Hi Chris,
can you post the pics with rotation and without, I'm having some serious rotation as well and I never bothered checking guidescope alignment to the primary ota. but I don't see the point if you use an x/y shifter or the 3 screw on the guidescope to find a star. once you adjust the guidescope to get a guidestar, both axes won't be parallel anymore.
I use an St80 as the guidescope and an 8" F4 and am struggling to figure out if it is due to my focuser not being square or if the ccd plane has a tilt.
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