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 Robert May on September 19, 2000 16:47:18 UTC

Guess that my first question is who have you contacted so far? There`s a number of places out there that provide glass. Newport Glass does provide some glass and may have facilities for providing a piece that big. Then there`s always Corning Glass for pyrex.
Also, what glass are you interested in? If you are happy with plate glass, then your choices are a lot better than if you want pyrex and I might mention that zerodur would be quite out of your price range as going to Bob Geoff at A.X.E. would produce a much lighter mirror (you could actually pick it up yourself!) for about the same cost.
If you just want a cheap piece of glass, the plate would be about what you want and you would want a 2" thick piece, slump it to the curve desired and prepare to do a many multipoint mirror cell for the glass.

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 1994-2024 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