Quote:
Originally Posted by Archy
I have: it works in centering a 1.25" eyepiece or collimator, but then the problem becomes: how do you know the 2" adaptor is centred.
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Yes good point! And now that has become patently obvious since my cheshire has arrived. When looking down it I can see one side of the focuser drawtube in view i.e the chesire is in no way aligned straight down the tube. Loosening the 2" adaptor thumbscrews I can adjust it to where it should be but of course that is not much use. So I imagine collimating is not really going to work in that state using it!