Hey all. I've been working on collimating my RC8 using the DSI method, and although I think I'm getting close, I took a 60 second image of M22 last night and noticed the stars are slightly "squashed". Would that still be a collimation issue? Or maybe tilt or pinch? I've attached a closeup of of the stars (near the center) and the link below goes to the full image.
https://drive.google.com/file/d/1rgP...ew?usp=sharing
I'll probably buy a glatter laser soon, but just wanted to make sure I could get as far as I could without dropping more cash.