Re: [ATM] Mirror figuring problem

[Mark Holm <mdholm@telerama.com>]

I second Dave about the number of zones.  You might find my program
CouderMask helpful, if you are running Windows.  Find it at
www.atmsite.org  Also, if you want to judge surface shape by Foucault
results, then use Jim Burrows' Sixtests, there is a link to it at
atmsite.  Sixtests has the best math behind it of any of the Foucault
analysis programs intended for manual test use.

If you are judging the depressed zone and TUE by eye and
not by Foucault numeric results, that is fine, but it will be helpful
for us if you indicate that.

I suspect Dave's stroke advice is correct also.  A depression at about
75% coupled with a TUE is sort of a zoney approximation of an oblate
figure.  Short stroking TOT might well be expected to get you about there.

-- 
Mark Holm
mdholm@telerama.com

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