View Single Post
  #9  
Old 08-01-2021, 09:07 AM
Tropo-Bob (Bob)
Registered User

Tropo-Bob is offline
 
Join Date: Sep 2013
Location: Cairns
Posts: 1,608
I have had several 4mm orthos over the years, but never liked any of them. Their eye-relief is just too small. I do have a 5mm KK and am happy with it.

My favourite Ortho is a 9mm. The 9mm can easily be converted into a 4.5 or 3mm with a barlow. Indeed, I used a 9mm with a 3X barlow to obtain my best views of Mars this year.
Reply With Quote