View Single Post
  #2  
Old 08-08-2009, 11:56 PM
Tandum's Avatar
Tandum (Robin)
Registered User

Tandum is offline
 
Join Date: Apr 2008
Location: Wynnum West, Brisbane.
Posts: 4,166
There shouldn't be a difference in collimation with and without a filter wheel. I'd suggest your focuser tube is sagging with the weight of the wheel attached.
Reply With Quote