[ATM] Trefoil caused by lateral supports

[Michael Lindner]

Dale Eason wrote:
> Here is my analysis of trefoil caused by 2 peg lateral
> support.

Dale,

Interesting analysis, in that the single center support introduces 
opposite error. That implies that there may be a position between 0 and 
90 degrees that minimizes error. I recall reading somewhere that 2 
supports 50 degrees apart was optimal in supporting the bottom edge of a 
mirror, but I'm not sure where I read it. Might be worth a test?

Clear skies,
-- 
Michael Lindner
http://www.starastronomy.org *** http://home.att.net/~mikel
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