Re: ATM 3/4" mirrors, multipoint cells, machine generated optics

["Mel Bartels" <mbartels@efn.org>]

>>>
Further exploration without any
mathematics convinces me that a 162 point cell would easily and properly
support such a system.  162 points?  Yes and actually quite easy to
construct. You just make up a whole bunch of identical parts and assemble
them. Easy.
<<<

Well, the problem is that these points need to be very free to move in the
proper axis of freedom.  If one builds more and more supports on top of
supports like a fractal pattern, the ability of the individual flotation
points to freely move with no frictional loading and to move equally well as
their partners across the mirror cell, disappears rapidly.  Two levels of
support ala a 9 pt support is ok, three levels is starting to be iffy, and
four definitely needs some re-thinking.  The astatic mount designs become
very attractive.

Mel Bartels