Re: ATM "exotic" mirror materials

[squiress@gnn.com (Stewart Squires)]

>       1. How much would a 10 - 12 inch blank of these 
>          material cost?

I looked at a Sitall blank 16" in diameter, with hole cut for a Cassegrain 
and about 3" thick.  Cost would have been about $3,500.



>       4. Who carries these materials?

Schott carries the Zerodur, the others can be found from the glass 
manufacturers on the ATM resources list.

-
Stew Squires

... islands lie behind the sun that I shall raise ere day is done.
Bilbo's Last Song,  J.R.R. Tolkien