[ATM] Astatic Mirror Support and Lateral Edge Supports for UltraThin Mirrors

["Peter" <peter@kitgear.com>]

Hi,

The best source of information on astatic mirror support I could find is
from a list member Frederic Gea:


http://www.astrosurf.com/altaz/astatic.htm
David - I especially like the second photo because this is in your ball park
for thickness ratio. Astatic cells may be just the ticket for ultra thin
mirrors.

Also see:
http://astro.umsystem.edu/atm/ARCHIVES/MAR01/msg01155.html



Piano Wire Lateral Edge Supports:
================================
Another list member (Jim I believe) was more concerned about lateral edge
support for such thin mirrors.
Frederic also provided some excellent information on piano wire supports at
the following location:
http://www.astrosurf.com/altaz/lateralsupport.htm

Also see Jan's page at:
http://home.wanadoo.nl/jhm.vangastel/Astronomy/50cmscope/pianowiresupport.ht
m


Ball Bearing Lateral Edge Supports:
==================================
Another option is a ball bearing edge support. This is the method I chose
for my larger scope. Jan vanGastel has some wonderful information on this
subject on his web page at:
http://home.wanadoo.nl/jhm.vangastel/Astronomy/50cmscope/bearingsupport.htm


Does anyone have experience with either of these lateral support methods to
discuss the range of mirror thickness where these techniques remain
effective?

Thanks,


Peter

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