View Single Post
  #2  
Old 22-08-2011, 07:47 PM
multiweb's Avatar
multiweb (Marc)
ze frogginator

multiweb is offline
 
Join Date: Oct 2007
Location: Hinchinbrook
Posts: 19,673
Quote:
Originally Posted by peeb61 View Post
Apologies if this question has been answered but...
Having just purchased a QHY8L, I wish to use this with my Bintel 8" f/4 Newt scope and because I use a Baader Coma Corrector, I was just wondering what the distance needed to happily bring this rig to focus without attracting Coma. I know the distance from the chip of the QHY8L to the outside of the glass is 20mm but there on?

Many thanks in advance.

Paul
You need another 35mm to the back of the MPCC +/-2mm.
Reply With Quote