Quote:
Originally Posted by astro_nutt
While your laser is shining a dot on the primary via the secondary, move the focuser fully in and out and see if the dot moves on the primary. If it does then the focuser needs collimation.
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Thanks for that advice. I think I have tried this during my many goes at collimation and if I remember it was OK but I will give it another go. I did however notice that the returning laser on the collimator faceplate would go out of alignment when the focuser was moved fully in or out assuming I started collimating with the focuser at a halfway point and that showed to be correct there. Would this also mean the focuser may be out?
Unfortunately for me (but not our dams) we have had a long run of rainy days and cloudy nights so a proper star test has been out of the question.