From: Michael Lindner 
To: Jeff Anderson-Lee , "Jeremiah J.
Burton"
        , atm{at}shore.net
Reply-To: Michael Lindner 


On Thursday 29 May 2003 08:11 pm, Jeff Anderson-Lee wrote:
> On Nov 7, 2001, Michael Lindner wrote (Re: ATM mounting primary mirror):
>
> "...I settled on pads 1/8"
> thick and 1" square. The scope holds collimation well, with no detectable
> movement of a laser collimator spot from horizon to zenith..."

As a follow up, I attached a dial indicator to the cell to detect movement
of the primary. From zenith to horizon the mirror moved laterally
0.003" due to the pads shearing, and there was no detectable movement
in any other direction. I consider that to be a good result. The thing is
still going strong, and if the clouds ever clear out of here I may get to
use it someday.

--
Michael Lindner
http://www.starastronomy.org
http://home.att.net/~mikel http://www.atmsite.org
http://home.attbi.com/~dcass/atmfaq/atm-faq.htm

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