From: "Dave McCarter" 
To: "ATM" 
Reply-To: "Dave McCarter" 


> And more recently if I am not mistaken, in the 1960's, where Boller
and
> Chivens used this style of support.
>
> Mel Bartels

The Elginfield Telescope, just north of here, uses this support scheme, and
"the mirror remembers last week's weather" because there is no
space for air movement around the glass. The edge is supported by a rubber
tube of mercury. Very fancy, heavy, difficult to keep properly inflated,
and probably not any better than a proper multi-point support.

Dave

--- BBBS/NT v4.00 MP