Back to forums

Collimation Issue

Equipment Reflectors Collimation
1 reply•77 views
Ajith Everester avatar
Ajith Everester avatar
I have been struggling with the collimation of my Skywatcher Quattro 300P for past 3 years. bought all kind of collimators and tried everything. changed my focuser to moonlite.

I think I couldn't achieve the best in the secondary mirror. Can anyone tell me what is happening with my secondary? I have tried all my best to put is inside the green circle but however it finally becomes this. 

Tony Gondola avatar
Tony Gondola avatar
Your secondary is slightly rotated relative to the focuser, you can tell that because it's not perfectly round. This is the hardest adjustment to get perfect just because of the way most secondary holders are designed. I think it's possible that all the time and gadgets are making you over think this. Have you done a star test? Are the rings concentric at high screen magnification? Are you having a problem with star shapes or irregular illumination that's effecting your images? That's the bottom line, it will probably never be absolutely perfect in some collimation gadget, it's your images that really matter.
Helpful Insightful Respectful