From: Mark Holm 
To: ulhas{at}nagpur.dot.net.in, atm{at}shore.net
Reply-To: Mark Holm 


I don't think a few millimeters will hurt anything.  I don't know how your
test stand is arranged.  Mine has two support pegs for the mirror.
 (Not the best for support, but OK for 200 mm diameter.  I cut the
bottom of hte masks to the same diameter as the mirror and just set the
mask on the pegs in front of the mirror.  With this arrangement, I can
change masks easily without disturbing the mirror position.

Mark Holm
mdholm{at}telerama.com

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