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8058Re: [tmboptical] Re: Monocentric eyepiece eye relief?

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  • Markus Ludes
    Mar 1, 2003
      the eyepieces will be physical like a Pentax SMC Ortho with 1.25" barrel

      ----- Original Message -----
      From: ronbee77 <ronby@...>
      To: tmboptical@yahoogroups.com
      Sent: Saturday, March 01, 2003 7:30 AM
      Subject: [tmboptical] Re: Monocentric eyepiece eye relief?

      --- In tmboptical@yahoogroups.com, "tmboptical <TMBoptical@a...>"
      <TMBoptical@a...> wrote:
      > 4mm = 3.2mm
      > 6mm = 4.8mm
      > 8mm = 6.4mm
      > 10mm = 8.0mm
      > The field of view is 30 degrees. This will give the observer
      > a feeling of greater eyerelief than the numbers above. But
      > again, we are not going to compromise performance, for a large
      > field or 20mm of eyerelief. There are plenty of eyepieces
      > on the market that achieve that, but they lack the critical
      > contrast of a superior designed and manufactured Monocentric
      > eyepiece. I personally have no trouble using the Zeiss Abbe
      > 4mm orthoscopic.
      > Thomas Back

      Oh no, no 5mm?

      Will the eyepiece physically be like "cone-like" where the exit pupil
      goes like the UO Ortho? I understand this physical design help
      greatly with short eye relief?

      Ron B[ee]

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