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Re: [ATM] convex secondary

Hi,

Oops, I just realized that if you've changed to an RC design the 
secondary will probably not be 4" in diameter.  You could still make a 
test plate, just of a different size.

	Mike

Mike Lockwood wrote:
> You might also consider making a 4" diameter concave test plate, and 
> figuring the secondary to match it using interference testing.  This way 
> you can avoid grinding/polishing the 16" mirror twice.


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