Re: field flattener
- I think FlatII is the best for ZS66SD.
You should find used FlatII for your scope.
I think FlatIII is better for 70 and larger telescopes.
--- In William-Optics@yahoogroups.com, "phyzznyk" <phyzznyk@...> wrote:
> Hello, I am new to the group. I recently got a used WO 66SD for guiding and wide-angle imaging. The guiding isn't going so well with my mount, and the field distortion is pretty bad with a APS-C DSLR, so I bought a WO flat-3 field flattener/0.8X focal reducer for wide angle imaging. The field of view is bigger but the field distortion is not gone, although it is better. Any thoughts on whether I got the right FF? (I could not find a used flat-2)
> Thanks, Ron