View Single Post
  #3  
Old 06-01-2016, 12:49 AM
barx1963's Avatar
barx1963 (Malcolm)
Bright the hawk's flight

barx1963 is offline
 
Join Date: Nov 2008
Location: Mt Duneed Vic
Posts: 3,982
Actually that is an eyepiece projection adapter. An eyepiece fitts inside the larger barrel. That is why there is a thumbscrew on the side to hold the eyepiece. Usually use a plossl or similar.

Malcolm
Reply With Quote