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Hi James,
I'm pretty sure the guidescope wasn't too far away from the main scope.
I made sure there was no flex, but I didn't tighten the guidescope screws too tight. so that could have contributed.
If polar misaligment is unlikely to be the cause for field rotation, I'm back to square one.
can anyone explain how field rotation actually happens with an eq aligned mount? I can understand star trails with tracking rate errors, but I don't get how stars rotate within the 2 degree FOV.
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