Re: [ATM] Anastigmat

["Richard F.L.R. Snashall" <rflrs@rcn.com>]

Richard F.L.R. Snashall wrote:
> yes, it only works for this diameter at
> f/7.863.
That may not necessarily be the case.  For example, going
back to the original question (280 mm f/7.5, using only
K5 and F2):

    http://users.rcn.com/rflrs/Ptz10-38x.atm   ATMOS input file
    http://users.rcn.com/rflrs/Ptz10-38x.len   OSLO input file
    http://users.rcn.com/rflrs/Ptz10-38x.txt   TEXT prescription
    http://users.rcn.com/rflrs/Ptz10-38x.zmx   ZEMAX input file

At first, this looked like it would end up being f/8.5 or
so, but it actually could be coerced back to the f/7.5 goal.
It was fussy to optimize, though, so maybe there is something.
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