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Re: Adapt 130/6 for solar H-alfa observing/imaging

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  • limunary
    I think this w0uld work; to be certain you can check with the solar filter mfg. Looking forward to some solar images. Tim
    Message 1 of 2 , Nov 29, 2009
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      I think this w0uld work; to be certain you can check with the solar filter mfg. Looking forward to some solar images.


      Tim

      --- In tmboptical@yahoogroups.com, "bertuseinbertus" <robert.pinxteren@...> wrote:
      >
      >
      >
      > Hello everyone,
      >
      > I want to get to f/30 or higher before I seriously can use a Solar Spectrum Filter .3 A
      > A standard filter will show the full disk with a focal length of 2700 mm or shorter.
      > I have the Powermates but would like to have a 3 to 3.2 X.
      > Could I stack a PM 2X with some 1.5-1.6 X tele-extender, and still meet the requirements of parallel light waves of the Solar Spectrum. (and mask down to F/30).
      > I found several TAK and a TV extender .
      > Thanks for reading,
      > Robert
      >
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