doughnuts729

Think I got it it was the twisting of the secondary that was causing the waining crescent like shape to one side like everyone said. It may not look perfect but my phone camera isnt quite at a right angle to the collimation cap eyepiece. Thanks to all that helped.

Ok yeah there is not to much of an issue when I adjust the secondary can get it centered easy but good to know all I gotta do is put a washer in.

I may have done that I tightened the bolts pretty hard like creaking scratching metal hard. It looked like there’s a deep scratch but its not as deep as it looks.

Actually I may have tightened the 3 adjustment screws pretty tight like creaking scratching metal tight.

I haven’t taken it to the my local telescope place yet but I’m confident I’ll get it fixed he knows what’s wrong with it as I talked on the phone. Yeah I tend to get paranoid and overthink things.

Hey sorry for not replying and thanks for helping I gave up I ended up messing with the back and forth movement of the mirror to fix the issue. But just ended up making it worse and now am taking it to a telescope shop to get it somewhat right so all I have to do is small adjustments.

I have looked the astrobaby page on collimating it’s a little confusing and I’m not good with technical things like this that’s why I posted here. But what people have told me is helping me understand.

Do you think the back and forth distance of my mirror is an issue or the issue?

Ok I guess I’ll have to trust you thanks

I do see a donut shape dark spot with ring of light around it when not focused and a bright NOT blurry light when focused. It’s just on the left side can you not see a part of it that looks like a waning crescent?

I don’t know if posting on the right forum but can someone help me with collimation? What is off in this picture or how do I fix it? I have a 10 inch skywatcher classic dobsonian. And howie glatter laser, parallizer and tublug.