Thread: Ao Cassegrain 12.5" F16
View Single Post
  #2  
Old 12-10-2007, 10:32 AM
Satchmo's Avatar
Satchmo
Registered User

Satchmo is offline 		 
Join Date: Dec 2005
Location: Sydney
Posts: 1,883
They were Dall -Kirkham design, with a spherical secondary. They were made up until the mid-70's. You would need to check it out optically.

Mark
Reply With Quote