From: "Vladimir Galogaza" 
To: "ATM shore" 
Reply-To: "Vladimir Galogaza" 


Russ,

> If your view mirror is of the utmost flatness , you might get by, but
>let others on the list have their
>say on this one...         Russ Jocoy

Actually what we are observing at KE  Foucault test is nulling of two small
zonal patches.
We have to determine radius of corresponding zone. If this determination is done via
pinsticks than shadow and pinstick images will undergone equal deformation on
the tester KE-mirror ( as described by Paul), permitting valid
determination of zone radius.
So far by intuition, I do not know how to do the relevant calculation to
prove it all.

Regards
Vladimir.

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