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Re: [ATM] ATM: Slit equipped and slitless testers-

>>>
detail, merely adds diffraction artifacts.  If anybody's interested in
seeing
them I'll send you a copy.  BTW I now use a 200 micron slit on my tester -
same
as you.
<<<

Interesting - when I started mirror making in the '70's I quickly settled on
a very wide slit from a design in Howard's book.  I never thought more
deeply as to why the wider slit would work because of the satisfaction of
breaking the mold and going against dogma.

Mel Bartels


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