[ATM] Dirty Design Trick

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

I'd heard a bit about a few of these.  In:

Surf      Radius    Thickness       Glass      Diameter

 STO    Infinity    -1.579773                        60
   2     285.641          7.6         BK7            63
   3    -261.529          4.4          F2            63
   4    -2465.37     293.6219                        63
   5     261.529          7.6         BK7            63
   6    -285.641      0.19826                        63
   7    -261.529          4.4          F2            63
   8    -2465.37     190.9509                        63
 IMA   -394.8356                               26.05473

the first f/10 doublet has a Visual Strehl of 0.843 in the
center, but drops to 0.287 at 13 mm off axis.  Some is
residual coma.

In the second doublet, the crown lens is reversed; the
two lenses are nearly in contact at the edge (0.0365 mm).
The visual Strehl of the f/6.7 full system is 0.790 in the
center and 0.703 off axis.

I tried this with some standard OTS lenses listed in the
catalogs, but I've not found any that have this level of
correction.  Rats... for a second there, I thought I had
a common scheme:-(
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