I recently acquired an 8” criterion dynamax SCT and would like to know the thread type on the rear of the telescope so I can get an adapter to attach a
celestron or Meade 1.25” visual back. The visual back I have is showing it’s age.
Optically it’s fairly good and I’ve heard all the problems associated with this scope.
Grateful for any advice , regards philip
Hi Ken, I thought I had a retaining ring for a celestron visual back in my bits and pieces and tried it and it didn’t fit . So maybe my bit is not what I thought.
Thanks for your help regards philip
I heard that some of these early SCTs had an odd thread the same as the later 4se which I happen to have an adaptor for. Mine is a t-adaptor but if the locking ring will slide over your visual back you could make it work maybe. Happy for you to try it for the price of postage ?