· Get a Cloudy Nights T-Shirt · Submit a Review / Article Click here if you are having trouble logging into the forums 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] Entrance · Main Index · Search · New user · Who's Online FAQ · Calendar Equipment Discussions >> ATM, Optics and DIY Forum Post   Previous   Index   Next   Expand   Subject Poster Views Replies    Last post Question on Washer Bearing for GSO Dob Base> VectorRoll   174 6    05/09/13 11:10 AM by VectorRoll Astigmatism in an Achromatic Doublet Larry Geary   301 14    05/07/13 03:25 PM by Larry Geary Porro Prism Angled eyepiece. Jon Isaacs   214 7    05/07/13 12:24 PM by Jon Isaacs Does paracorr add any SA? ( 1 2 all ) Darren Drake   916 27    05/07/13 08:38 AM by Achernar Neither Spectrum nor Majestic return email? gaz-in   484 13    05/06/13 09:55 PM by SACK Share my home made 250mm big binoculars ( 1 2 3 4 5 all ) luciano   16267 92    05/06/13 06:57 AM by issa Why Paint? ( 1 2 all ) Douglas729   1139 22    05/05/13 01:19 PM by tayseidel grinding machine kfrederick   291 2    05/05/13 10:55 AM by BoriSpider Mirror grinding question TimothyA   710 15    05/04/13 07:33 PM by mark cowan autocollimation mirror Pinbout   126 0    05/04/13 01:16 PM by Pinbout Astigmatism affects on imaging whduke   277 5    05/03/13 07:36 PM by whduke Sound Stepper circuit success! Homemade EQ mount coinboy1   181 0    05/03/13 04:56 PM by coinboy1 CGEM Polar Scope Backlighting Modification Shelby68GT500   165 10    05/03/13 04:33 PM by don clement "mirror only" why so expensive? anirudha   641 8    05/03/13 04:07 PM by EyeSage More places to buy ATM stuff Sean Cunneen   509 6    05/03/13 01:13 PM by don clement HST Strehl Ratio bremms   591 5    05/03/13 01:05 PM by bremms 24" Diameter Drip Pan Ian DG   538 14    05/03/13 10:49 AM by Mike I. Jones Astro-Physics Focuser ( 1 2 all ) bremms   1142 21    05/02/13 11:08 AM by Jim Curry Foucault Shadows Hard to read : Cause? JohnH   373 10    05/02/13 08:50 AM by planet earth Shape for the aperture openings? rjurevicius   280 4    05/02/13 05:35 AM by jpcannavo Pages 1 2 3 4 5 6 7 8 9 10 11 ... 619 Extra information 10 registered and 15 anonymous users are browsing this forum. Moderator:  ausastronomer, richard7  Forum Permissions       You cannot start new topics       You cannot reply to topics       HTML is disabled       UBBCode is enabled Legend: New posts New posts No new posts No new posts Topic with over 25 replies or 250 views Sticky topic Event topic Poll Attachment Show active in the last day active in the last 2 days active in the last week active in the last 2 weeks active in the last 3 weeks active in the last month active in the last 3 months active in the last 6 months active in the last year from all dates Jump to *Announcements and News* -----   Cloudy Nights Announcements   Discussion of CN Articles, Reviews, and Reports   Celestial Events*General Astronomy* -----   Beginners Forum   General Observing and Astronomy   Outreach   Light Pollution*Equipment Discussions* -----   ATM, Optics and DIY Forum   Binoculars   Binoviewers   Cats & Casses   Classic Telescopes   Equipment   Eyepieces   Mounts   Observatories   Reflectors   Refractors    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   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*Speciality Forums* -----   Arizona Science and Astronomy Expo   NEAF (Northeast Astronomy Forum) and NEAIC (Northeast Astro Imaging Conference)   AstroArt   Astronomy Clubs and Star Parties   Astronomy Software & Computers   AstroWebsites   Science! Astronomy & Space Exploration, and Others   Space Rocks   Stellar Media*Swap and Shop* -----   Shop and Swap Audio Components*CN Feedback and Vendor Announcements* -----   Vendor and Group Announcements*International Year of Astronomy 2009 - Forums are now closed.* -----   IYA Archive Info CN Forums Home

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