· Get a Cloudy Nights T-Shirt · Submit a Review / Article    Click here if you are having trouble logging into the forums Cloudy Nights - Official Forums of the 2009 International Year of Astronomy Privacy Policy | Please read our Terms of Service | Signup and Troubleshooting FAQ | Problems? PM a Red or a Green Gu.... uh, User   You are not logged in. [Login] Forum Archives · Entrance · Main Index · Search · New user · Who's Online FAQ · Calendar Equipment Discussions >> ATM, Optics and DIY Forum Previous   Index   Next   Flat   RRavneberg professor emeritus Reged: 12/02/05 Posts: 634 Loc: Columbus, OH Re: Ravneberg Scope Gallery       01/02/08 07:24 PM Attachment (169 downloads) Edit   Reply   Quote   Quick Reply:   Dale, Going back to your initial question ... I would certainly go to at least 2" diameter tube. All the strength is in the surface, so diameter is what counts. If you can get some thin-wall 2.25" or 2.5" it might even be better. Here's a 12" by Dave North. If you used a wrap-around curved secondary support/light baffle like I did it might work very nicely and would be much lighter at the top. -------------------- Ron Ravneberg Post Extras       Entire thread Subject Posted by Posted on Ron Ravneberg Memorial Scope Gallery RRavneberg 12/29/07 03:52 PM Re: Ravneberg Scope Gallery chipnwho   01/01/08 01:34 PM Re: Ravneberg Scope Gallery RRavneberg   01/02/08 04:52 PM Re: Ravneberg Scope Gallery chipnwho   01/02/08 06:50 PM Re: Ravneberg Scope Gallery RRavneberg   01/02/08 07:24 PM Re: Ravneberg Scope Gallery *DELETED* dawsonian2000   09/12/09 09:52 PM Re: Ravneberg Memorial Scope Gallery Don W   09/12/09 10:07 PM Re: Ravneberg Memorial Scope Gallery dawsonian2000   09/12/09 10:39 PM Re: Ravneberg Memorial Scope Gallery Don W   09/13/09 10:26 AM Re: Ravneberg Scope Gallery chipnwho   01/02/08 07:52 PM Re: Ravneberg Scope Gallery Art Bianconi   12/30/07 12:28 PM Re: Ravneberg Scope Gallery RRavneberg   12/30/07 12:54 PM Re: Ravneberg Scope Gallery PitchHitter   09/27/09 01:46 PM Re: Ravneberg Scope Gallery PitchHitter   09/27/09 01:54 PM Re: Ravneberg Scope Gallery Crab   12/31/07 05:51 PM Re: Ravneberg Scope Gallery RRavneberg   12/31/07 06:24 PM Re: Ravneberg Scope Gallery RRavneberg   12/31/07 06:26 PM Re: Ravneberg Scope Gallery RRavneberg   12/31/07 06:27 PM Re: Ravneberg Scope Gallery RRavneberg   12/31/07 06:28 PM Re: Ravneberg Scope Gallery RRavneberg   12/31/07 06:30 PM Re: Ravneberg Scope Gallery RRavneberg   12/31/07 06:38 PM Re: Ravneberg Scope Gallery RRavneberg   12/31/07 06:42 PM Re: Ravneberg Scope Gallery Crab   12/31/07 07:31 PM Re: Ravneberg Scope Gallery RRavneberg   12/29/07 03:53 PM Re: Ravneberg Scope Gallery RRavneberg   12/29/07 03:54 PM Re: Ravneberg Scope Gallery RRavneberg   12/29/07 03:55 PM Re: Ravneberg Scope Gallery RRavneberg   12/29/07 03:55 PM Re: Ravneberg Scope Gallery Jim Moscheck   12/30/07 01:06 PM Re: Ravneberg Scope Gallery RRavneberg   12/30/07 01:33 PM Re: Ravneberg Scope Gallery Jim Moscheck   12/30/07 05:07 PM Re: Ravneberg Scope Gallery Art Bianconi   12/30/07 05:33 PM Re: Ravneberg Scope Gallery MtnGoat   02/20/08 03:48 PM Re: Ravneberg Scope Gallery rick rian   02/02/09 11:39 AM Re: Ravneberg Scope Gallery Jim Rose   02/03/09 07:09 AM Re: Ravneberg Scope Gallery Don W   02/03/09 07:43 AM Re: Ravneberg Scope Gallery Tom Trusock   02/03/09 03:16 PM Re: Ravneberg Scope Gallery Don W   02/03/09 07:39 PM Re: Ravneberg Scope Gallery Fraxture   07/10/09 03:28 PM Re: Ravneberg Scope Gallery Happy-Idiot   01/31/09 06:01 PM Re: Ravneberg Scope Gallery rboe   01/31/09 06:18 PM Re: Ravneberg Scope Gallery perfessor   01/31/09 10:30 PM Re: Ravneberg Scope Gallery albert1   02/01/09 02:30 AM Re: Ravneberg Scope Gallery zjc26138   12/30/07 01:09 PM Re: Ravneberg Scope Gallery RRavneberg   12/29/07 03:56 PM Re: Ravneberg Scope Gallery RRavneberg   12/29/07 03:57 PM Re: Ravneberg Scope Gallery RRavneberg   12/29/07 03:58 PM Re: Ravneberg Scope Gallery RRavneberg   12/29/07 03:59 PM Re: Ravneberg Scope Gallery RRavneberg   12/29/07 04:01 PM Re: Ravneberg Scope Gallery RRavneberg   12/29/07 04:01 PM Re: Ravneberg Scope Gallery RRavneberg   12/29/07 04:02 PM Re: Ravneberg Scope Gallery RRavneberg   12/29/07 04:03 PM Re: Ravneberg Scope Gallery RRavneberg   12/29/07 04:04 PM Re: Ravneberg Scope Gallery RRavneberg   12/29/07 04:05 PM Re: Ravneberg Scope Gallery RRavneberg   12/29/07 04:06 PM Re: Ravneberg Scope Gallery RRavneberg   12/29/07 04:07 PM Re: Ravneberg Scope Gallery RRavneberg   12/29/07 04:08 PM Re: Ravneberg Scope Gallery RRavneberg   12/29/07 04:09 PM Re: Ravneberg Scope Gallery RRavneberg   12/29/07 04:11 PM Re: Ravneberg Scope Gallery Markovich   02/20/08 02:31 PM Re: Ravneberg Scope Gallery RRavneberg   12/29/07 04:12 PM Re: Ravneberg Scope Gallery plyscope   12/29/07 04:21 PM Re: Ravneberg Scope Gallery RRavneberg   12/29/07 04:30 PM Re: Ravneberg Scope Gallery plyscope   12/30/07 05:07 PM Re: Ravneberg Scope Gallery AV in CMH   12/29/07 05:42 PM Re: Ravneberg Scope Gallery RRavneberg   12/29/07 05:56 PM Re: Ravneberg Scope Gallery Undermidnight   12/29/07 06:03 PM Re: Ravneberg Scope Gallery RRavneberg   12/29/07 06:41 PM Re: Ravneberg Scope Gallery Undermidnight   12/30/07 06:18 PM Re: Ravneberg Scope Gallery Glassthrower   12/30/07 10:36 PM Re: Ravneberg Scope Gallery JWW   12/31/07 01:22 AM Re: Ravneberg Scope Gallery o1d_dude   12/29/07 07:05 PM Re: Ravneberg Scope Gallery NHRob   12/30/07 07:37 AM Re: Ravneberg Scope Gallery RRavneberg   12/30/07 11:49 AM Re: Ravneberg Scope Gallery Veridian   12/31/07 01:51 AM Re: Ravneberg Scope Gallery RRavneberg   12/31/07 09:51 AM Re: Ravneberg Scope Gallery rwiederrich   12/31/07 10:52 AM Re: Ravneberg Scope Gallery Wes James   12/31/07 12:33 PM Re: Ravneberg Scope Gallery David L   01/02/08 09:55 PM Re: Ravneberg Scope Gallery Chuck Gulker   01/03/08 11:58 AM Re: Ravneberg Scope Gallery cocobolo   02/16/08 12:52 AM Re: Ravneberg Scope Gallery mattyfatz   02/16/08 02:50 AM Re: Ravneberg Scope Gallery RRavneberg   02/17/08 02:14 AM Re: Ravneberg Scope Gallery nightstalker   12/31/07 05:07 PM Re: Ravneberg Scope Gallery Olivier Biot   12/30/07 11:59 AM Re: Ravneberg Scope Gallery NHRob   12/30/07 12:18 PM Extra information 14 registered and 8 anonymous users are browsing this forum. Moderator:  Don W, Mike I. Jones  Forum Permissions       You cannot start new topics       You cannot reply to topics       HTML is disabled       UBBCode is enabled Rating: Thread views: 7598 Jump to *International Year of Astronomy 2009* -----   Global Coordination   Cornerstone Projects   Special Projects   Special Task Groups   Global Activities   National and Regional Activities   IYA 2009 in Africa   IYA 2009 in the USA*Announcements and News* -----   Cloudy Nights Announcements   Discussion of CN Articles, Reviews, and Reports   Beginners Forum   Celestial Events   Light Pollution*Equipment Discussions* -----   ATM, Optics and DIY Forum   Binoculars   Binoviewers   Cats & Casses   Classic Telescopes   Equipment   Eyepieces   Mounts   Observatories   Reflectors   Refractors    Celestron SkyScout and Meade mySky   Video and Electronically Assisted Astronomy*Astrophotography and Sketching* -----   Beginning and Intermediate Imaging   Film Astrophotography   DSLR & Digital Camera Astro Imaging & Processing   CCD Imaging & Processing   Solar System Imaging & Processing   Sketching   Astro Imaging/Sketching Contest *Observing* -----   NEO   General Observing   Planetary and Solar System Observing   Lunar Observing   Deep Sky Observing   Double Star Observing   Solar   Variable Star Observing and Radio Astronomy*Telescope Specific Forums* -----   Celestron NexStar    NexStar GPS / CPC Telescopes   Questar Forum   Meade ACF/RCX / LX / GPS    Meade ETX*Other* -----   Science of Astronomy & Space Exploration   AstroWebsites   Space Rocks*Speciality Forums* -----   AstroArt   Astronomy Software & Computers   Stellar Media   Astro Outreach, Clubs and Star Parties*CN Feedback and Vendor Announcements* -----   Vendor and Group Announcements CN Forums Home

Cloudy Nights Sponsor: Astronomics