Back to Home

ATM Forum Message

Forums: Atm · Astrophotography · Blackholes · Blackholes2 · CCD · Celestron · Domes · Education
Eyepieces · Meade · Misc. · God and Science · SETI · Software · UFO · XEphem
RSS Button

Home | Discussion Forums | Amateur Telescope Making | Post

Be the first pioneers to continue the Astronomy Discussions at our new Astronomy meeting place...
The Space and Astronomy Agora
RE: 40

Forum List | Follow Ups | Post Message | Back to Thread Topics | In Response To
Posted by Duane Reilly on September 20, 2000 07:52:55 UTC

am interested in pyrex. As i want something thick that wont sag. I have contacted everyone here in australia. The thickest glass that is produced here is 25mm thick (1"). This is way too thin.
But im not fussy. I dont really care how much it ways as it is going into an observatory. (though i bet i wont say that when i see the cost of freight!!). i sent a inquiry email to Newport and got this reply
The cost of a plano/plano 40 inch diameter Pyrex plate approximately 2" to 2.125" thick, fine annealed is $3,245.00

Currently, we are not set up to generate mirrors larger than 36 inches.

i am a little baffled here? they say that they cannot generate a mirror larger than 36", but they gave me a price for the pyrex plate. Does this mean they can supply me with a raw unfinished blank?

is that a good price????

Kind Regards

Duane Reilly

Follow Ups:

Login to Post
Additional Information
About Astronomy Net | Advertise on Astronomy Net | Contact & Comments | Privacy Policy
Unless otherwise specified, web site content Copyright 1994-2021 John Huggins All Rights Reserved
Forum posts are Copyright their authors as specified in the heading above the post.
"dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET"
are trademarks of John Huggins