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Re: Field Flattener/Focal Reducer for the ZS 66 Doublet apo

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  • Craig Stark
    If I ever get a clear night here, I ll be trying the TV 2008 on one, but it ll be on smaller CCDs. Craig
    Message 1 of 4 , Jan 4, 2006
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      If I ever get a clear night here, I'll be trying the TV 2008 on one,
      but it'll be on smaller CCDs.

      Craig

      --- In William-Optics@yahoogroups.com, "Rick Meinig" <meinig@a...> wrote:
      >
      > Per the WO tech support, the WO .8X reducer/flattener is not
      > compatible with the ZS Doublet apo. Does anyone have any
      > reccomendations? Has anyone tried the TeleVue .8X reducer/flattener. I
      > seem to have a fair amount of off axis oblong stars when doing prime
      > photography with a canon 10d and a 1-1/4 nosepiece. I can post a
      > picture to the photo section of a stack of 37X2min of M42or even a
      > single 2 min pic for that matter to give a better idea. Visually it
      > seems that the star test is decent so I don't know where this is
      > coming from...I don't know if this inherent with this scope,
      > collimation issue, or the doublet itself...
      > Rick Meinig
      >
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