28290Re: [tmboptical] 203mm TMB achromat refractor
- Oct 1, 2005
> Thomas, how does this instrument compare with the BO/TMB doublets thatCan you buy one of those lenses Donald? I haven't been keeping close track
> have eight times the color-correction of an achromat? That subsumes that
> this doublet is corrected better than an ordinary achromat?
> Donald Rosenfield
on that front.
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