Re: ATM: Pivot Wars: To wobble or to comply?

[Aart Olsen <aolsen@prairienet.org>]

Don't forget that the pivots of a wiffletree in a mirror cell move
significantly only for an instant, when you first plop the mirror in
place (or after a ride in the car), and that motion doesn't matter. 
After the mirror is seated the pivots move only the tiniest bit, when
the telescope motion and gravity distort the cell.  In a decent cell
these operational angles change probably are on the order of
microdegrees.  I betcha a compliant pivot like RTV has less spring over
an angle of microdegrees than the stiction of a wobbly pivot produces.
-- 
Aart Olsen
aolsen@prairienet.org