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
RE: Help? Pier For 2 Story Observatory

Forum List | Follow Ups | Post Message | Back to Thread Topics | In Response To
Posted by tom@digitalmoon.net on September 14, 2000 03:05:51 UTC

a couple of small points. if possible, leave your foundation block isolated structurally (say with a 1/2 inch rubber strip) from the first floor slab if people will be walking around in the garden shed while you are taking a 4 hour exposure. your garden shed may be a meeting place for your friends while people observe and take pictures. if nobody will be there, make them intigral with a little re bar to boot. also, if you intend to have reasonably ballanced systems that do not crank a torque into the top of your pier, the rotational deflections mentioned by somebody else will be miniscule. if however, you intend to cantilever and lock large footpoundage into the top of the pier, a calculation will tell you the angular rotation due to the applied moment, no big deal. tom leech

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 1994-2020 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