[ATM] If it's in a supremely stiff cell, that does not twist,why would a thin mirror sag?

[artbianconi at blast.net (artbianconi@blast.net)]

Maybe I am dense.

Maybe I am stupid.

No matter how I try I cannot fathom why a thin mirror would not maintain its 
parabolic surface if held by a uniformly planar cell made of of carbon fiber.

If it be true that the sagging issue begins with using a thin mirror, instead of a 
thick one and goes away to a major degree when the mirror is made thick 
again, then any properly designed supplimental support made from suitable 
materials, should restore the correct geometry and prevent the distortion.

There seems to be a great deal of resistance to this logic.

I don't understand.

Art Bianconi