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Old 26-03-2021, 06:38 PM
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gregbradley
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Join Date: Feb 2006
Location: Sydney
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Quote:
Originally Posted by MarkInSpace View Post
Hi, the point doesn’t shift as I rack out the focuser. It seems squared, but not centred.
I guess the problem is the flattener is not aligned with the centre- maybe that’s causing the issue?
I meant the focuser is not square to the tube, so if you rotate the focuser with a laser in it the laser point does not rotate around the centre of the objective lens.

It may be adjustable? Otherwise pack out your camera so it counteracts that.

Looking at your sample image it appears to be only out by a bit.

Greg.
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