To: atm{at}shore.net
From: tkrajci{at}san.osd.mil
Reply-To: tkrajci{at}san.osd.mil


>>>>
>Does anyone know of empirical information regarding the thickness of
>aluminum coatings, and how variances in thickness from the center to the
>edge of a mirror might affect the mirror's figure?
><<<

Go to:   www.egroups.com
Sign up as a member to the Zambuto mirror group. Look in the photos
section.  There is at least one foucaltgram of a mirror that is apparently
given a bad aluminum coating...that alters the mirror's figure for the
worse.  (After discussion with the coater...process improved...no more
figure-altering coatings.)

Tom Krajci
Tashkent, Uzbekistan

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