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I thought I would give an update on a recent change to this scope. Overall I have been very happy with it. The only nagging issue has been the spike in star images that would show up if the locking knob on the focuser was too tight. I also found that the knob that adjusted the helical focuser friction was pushing the corrector slightly off centre.
I think I have a good solution now. Since the focuser just holds the corrector in place and the coma corrector does the focusing, I drew up the contraption below in Tinkercad. The three adjustment knobs keep the coma corrector centred and the star images are now nice and round and much easier to keep that way.
Rod.
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