17.25" Quartz Disk On Ebay - an Astronomy Net ATM Forum Message

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


Home \| Discussion Forums \| Amateur Telescope Making \| Post	Login

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

17.25" Quartz Disk On Ebay

Forum List | Follow Ups | Post Message | Back to Thread Topics
Posted by Steve Fejes on July 20, 2000 02:08:25 UTC

There is a quartz disk of 17.25" diameter and 2" thickness for sale. The two faces are polished flat to about 4 waves. It could be finished into an optical window, optical flat, or ground to make a telescope mirror. I don`t know how much the reserve is yet.
The seller said that he has 10 of these available. They were intended as optical windows in Russian spy satellites, but the program was cancelled.
Just thought you might like to know, Steve

Follow Ups:

RE: 17.25 - Pablo - July 20, 2000 - 03:37 UTC
- RE: RE: 17.25 - Steve Fejes - July 20, 2000 - 22:07 UTC
RE: 17.25 - Jack McQuaide - July 20, 2000 - 09:28 UTC
RE: 17.25 - jltrade@thrunet.com - October 5, 2000 - 13:16 UTC

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