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Collimating a newtonian with a filter wheel attached
This will sound like a silly question but when attaching a filter wheel to a newtonian focuser should the collimation procedure occur with or without the filter wheel attached to the focuser?
With my set up the filter wheel is attached to the focuser, then a 5 x powermate and then my Skynyx.
So far I have been collimating before attaching the filter wheel. But have also tried it after attaching the filter wheel and there is a slight difference.
Which method would produce the best results and why?
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