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Re: [ATM] convex secondary

Thanks Mike for this testing alternative.

Can you describe how the interference test is done?
I guess the test plate has a concave shape identical to the convex wanted?
Where do you put the monochromatic light source and how can we get such 
light?
What do you look at when testing the mirror?


----- Original Message ----- 
From: "Mike Lockwood" <melockwo@uiuc.edu>
To: <atm@atmlist.net>
Sent: Tuesday, March 01, 2005 11:36 AM
Subject: Re: [ATM] convex secondary



>
>> I know anything about interference testing, does it need special 
>> equipment? How accurate is it?
>
> You need a monochromatic light source.  It is as accurate as your test 
> plate.
>

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