I've been experimenting with astrophotography using a Meade 178ED refractor, and I wanted to ask about a field flattener (I can't find anything specific for this scope). Can you tell me - are field flatteners usually made for specific OTAs or are there some that are generic for different telescopes?
As far as I know there is no filter thread on the scope that could be used for this. It would have to be mounted on a 2" tube or something like that.
Any advice appreciated!
Edited by deanbrown3d, 17 February 2019 - 12:54 AM.