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Re: field flattener

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  • jeffcook38
    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.
    Message 1 of 2 , Nov 30, 2010
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      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
      >
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