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Re: ATM 16" F/33 valid design?




At 20:57 1/17/2002 +1000, Peter John Smith wrote:

>Somewhere in the Archives is set of of data I calculated about an extremely
>high F:NO Cass made by using a standard lens as the secondary. It is hazy
>now, but there was performance data on a series of F:NOs.  It is vaguely
>interesting and would not be hard to try.

Here are the archive links to two posts you made with detailed 
configuration data: 
<http://astro.umsystem.edu/atm/ARCHIVES/JAN99/msg01448.html> and 
<http://astro.umsystem.edu/atm/ARCHIVES/JAN99/msg01389.html>.

Someone on the atm list threatens to make one of these once a year or so, 
so the topic comes up periodically. If anyone's actually done it besides 
the author of that article (Endemann is the correct spelling I think) 
they're keeping it quiet though.

Mike Peck

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Michael Peck
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