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[ATM] Refractor Design Revisited

I revisited this geometry, but aimed at about 75 mm diameter:

Title: Ptz07-07x
72 mm f/8 Refractor
Field: 4.176 Degrees

Surf      Radius   Thickness   Glass   Diameter

 STO    Infinity   -2.512096                 72
   2     259.208         8.9   N-BK7         75
   3    -259.208        0.58                 75
   4    -259.208           5    N-F2         75
   5    Infinity      373.39                 75
   6     175.823       6.635   N-BK7         58
   7    Infinity      67.773                 58
   8    -175.823           4  N-BAK4         44
   9     259.208    103.2528                 44
 IMA    2755.718                       42.11645

Oh, yeah... a Celestial Solstice to all.
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