[ATM] Testing tunnel

[William Marriott]

Sorry, I tried to send this to the list, beside to
Guy, and it did not work properly, so...

Guy;

I have found, at least when we had to move out of 
the temperature  controlled polishing/testing room to 
test a 25" f4.75 mirror, that even putting a large
cardboard box over the mirror with one side cut 
for the light to hit the  mirror, made a BIG 
difference in doing knife edge testing. 

But we did not have doors opening and closing to 
have to deal with. 

Bill Marriott
VA Optical Labs