From: "CSC" 
To: "Atm" 
Reply-To: "CSC" 




-----Original Message-----
From: owner-atm{at}shore.net [mailto:owner-atm{at}shore.net]On Behalf Of John
Sherman
Sent: Monday, February 10, 2003 8:57 PM To: atm{at}shore.net
Subject: Re: ATM Tesing a spheriod?





Ah, Yes.  Easy to test is right.  I labored through probably 20 hrs of
figuring to get a good sphere 8" f/15.  I wanted the best reference
sphere for the Ritchey-Commons test. The 8" f/7 took nearly that long.

Are you going to flex it or use it as a sphere?

Colin


>star test. You would not believe how beautiful this test is.
>
>it is easy to get a superb sphere.

Maybe you mean, easy to test a superb sphere? I found that testing mine was
a lot easier than getting it. But then, you probably have a lot more
experience than I do. (too bad for me!)      8^)



John

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