Re: [ATM] Focault Problem

[Kurt Clement <kurt.clement@flashmail.com>]

Thanks to all who answered.

1. This is my first experience making a mirror.  Lots of fun and lots of 
new stuff to learn so far.  I can determine the ROC, and the mirror darkens 
all at once, I can see the shape of the mirror, a sphere with a slight hump 
in the center.  I just thought I was doing something wrong after seeing all 
the nice images on the web.  I have not started measuring yet, as I am not 
able to get it complete polished out to pass the laser test.  I am 
suspecting my CeOx but will ask that question in a separate thread.
2.  It is a slitless tester, moving source, with the same KE over both 
source and viewing port.
3.  Since everybody sees the lines to some degree, I will learn to look 
through them.  Moving the KE further from the source did not seem to help 
initially, but I will experiment further.

Thanks,

Kurt
Nixa, MO



At 04:52 PM 3/29/04 -0800, Guy Brandenburg wrote:

>Those lines are normal, in my opinion. One should just
>ignore them, as they are a result of diffraction. Just
>concentrate on the shadows.
>Guy Brandenburg

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