ATM - Help finding materials for cassegrain project.??

["Noesgaard,Ken" <Ken.Noesgaard@siemens.ca>]

Merry Christmas to all!

I'm starting on a 10" cassegrain similar to the design shown in A.T.M.T.,
Vol. 1, p.192 (Mackintosh) and I'm having a little trouble locating BK-7
blanks. Most places I've tracked down are wholesale suppliers, and Newport
hasn't even provided me with a price.

I need 2 pieces of BK-7 roughly 10.5" x 1" circular would be vastly
preferable, although trepanning is an option. 

If anyone could steer me in some direction to procure this glass, I would
really appreciate it.

BTW, I plan to publish my ATM diary of this project once I have completed
it, if anyone wishes to check it out. The design work is by a local
professional optical designer who previously worked on satellite telescopes
and interferometry, Doug Miller. He is planning on offering his services via
the net as an optical consultant. I'm finding him particularly handy in my
projects as if your optical element is slightly out of spec, he can adjust
the design to optimum using the specs of the element on hand. A nice plus
for a guy who grinds and polishes on his kitchen table.

Any tips on making correctors or general large lens work would also be
gratefully accepted.

Thanks much,

Ken Noesgaard.