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28290Re: [tmboptical] 203mm TMB achromat refractor

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  • Mike C
    Oct 1, 2005
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      > Thomas, how does this instrument compare with the BO/TMB doublets that
      > have eight times the color-correction of an achromat? That subsumes that
      > this doublet is corrected better than an ordinary achromat?
      > Thanks,
      > Donald Rosenfield

      Can you buy one of those lenses Donald? I haven't been keeping close track
      on that front.
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