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
Login

Be the first pioneers to continue the Astronomy Discussions at our new Astronomy meeting place...
The Space and Astronomy Agora
ABSOLUTELY NOT

Forum List | Follow Ups | Post Message | Back to Thread Topics | In Response To
Posted by Chris Baetens on May 30, 2004 10:19:43 UTC

No, the bolt and the aluminum plate, nor the epoxy or glue hase to be removed AT ALL....!!
Attention : not all sorts of glue can be used..!
At Urania whe have our own vacuum bell jare (700 mm diameter!)testing all sorts of materials under the bell jar at a vacuum aboout -5 Torr. (The lowest whe can reach).
Whe have done these tests the see howe some materials react at these extreme conditions. Lots of materials react very well, in fact most of them are usable.
At Uranie whave also have a colleague mirror grinder(Joris V.), working at (former) SABENA and they also doing a lots of tests on the subject. Joris gifs us a lot of information in case of doubt.
Maybe due to the fysical shape of the bell jare it MAY be possible one has to remove all the things you've glueed on the back off your mirror.
A second reason is that the operator off the bell jarr is unaware of all these facts and do not want to take any risks.

Chris
Chris@telescoop.net

Telecope making course at Urania
www.telescoop.net

Follow Ups:

    Login to Post
    Additional Information
    Google
     
    Web www.astronomy.net
    DayNightLine
    About Astronomy Net | Advertise on Astronomy Net | Contact & Comments | Privacy Policy
    Unless otherwise specified, web site content Copyright 1994-2022 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