From: "Richard Schwartz" 
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Reply-To: "Richard Schwartz" 


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I am wondering if the quality required in a diagonal depends on the =
distance from the diagonal to the focal plane.   If the diagonal is very =
close to the focal plane, perhaps error in the diagonal surface can't do =
much damage....

. . . Richard
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I am wondering if the quality required =
in a=20
diagonal depends on the distance from the diagonal to the focal=20
plane.   If the diagonal is very close to the focal
plane, = perhaps=20
error in the diagonal surface can't do much damage....
 
. . . =
Richard

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