Kon Posted January 10, 2022 Share Posted January 10, 2022 (edited) I have a Skywatcher 200P Dob for just over a year and it had heald collimation from the factory very well, until my son kicked his soft ball at it. I noticed on a star test and Cheshire eyepiece that it was off. I have never done it and I followed astrobabys website. Pretty straight forward and it seemed my secondary was far more off than my primary. I used a Cheshire eyepiece with side view. As a first attempt how does that look until the skies clear for a star test? I found it hard to hold my mobile square to the focuser but that's the view from the Cheshire eyepiece. Prior to collimation the primary mirror clip at 8oclock was hardly visible. Edited January 10, 2022 by Kon 2 Link to comment Share on other sites More sharing options...
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