Quote:
Originally Posted by atalas
Collimation looks good with the second pic....first pic showing slightly off but that's probably due to focuser shift moving off centre where there's more field curvature.
Note  I'm not a optics expert) but don't open Fresnel rings so much because It's harder to see any defects in optics with the light spread out to far.
Having said that I don't see any issue in the mirror.....looks good.
What you can do while waiting for a flattener is pull the main mirror cell out from the back and take some pressure off the mirror clips and re collimate. |
Thanks for your advice Louie - much appreciated.
Doug
