Quote:
Originally Posted by graham.hobart
Hey Guys and gals, if I change the focuser on an f4 newt from the standard issue to a moonlite, does it affect the collimation? I mean- when you buy the Cats Eyes tools it goes into how far the focuser is out etc and the Moonlite is a lower profile than the stock focuser?
Or do I just suck it and see and adjust accordingly anyway?
I don't want to mess with the collimation unless I really really have too.
Sorry for the thick question but my brain hurts from all this rain!
Graz  |
Dopey bugger... should have asked me.
The issue will be around the size of the light cone leaving the side of the scope and the profile of the inside of the focuser. Lower profile can means more back focus but it will depend a bit on the diameter of the cone as it enters the base of the focuser... dont want to loose light due to obstruction Happy to do the math for you mate...
Rom