Thread: Orion field flattener question
View Single Post
  #4  
Old 05-04-2021, 08:39 AM
The_bluester's Avatar
The_bluester (Paul)
Registered User

The_bluester is offline 		 
Join Date: Feb 2011
Location: Kilmore, Australia
Posts: 3,342
If you mean the thread on the corrector that the M42 adapter screws on to, the next likely size might be M68 if M54 is too small.
Reply With Quote