View Single Post
  #4  
Old 10-10-2018, 11:23 AM
Imme (Jon)
Registered User

Imme is offline
 
Join Date: Aug 2017
Location: Kyneton
Posts: 840
Quote:
Originally Posted by multiweb View Post
When you use a quide scope even if it's bolted and has zero flexure you still can get flexure between the guidescope and the main imaging telescope. If it's a refractor then it's less likely but if it has a mirror and depending on its mounting, size and weight YMMV. Now the only way to get rid of flexure 100% is to guide through the same light path you're imaging.

If you use a guidescope on a celestron SCT you will likely get flexure because the primary will move. If you do the same on a big newt same thing. If you image with a scope that is very tight mechanically then you might get away with it.
Good point Marc....definitely see the benefit if you are using something with a mirror in it and things that can flex/move.
Reply With Quote