· 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 Lightbridge 16" hold collimation? ( 1 2 all ) acochran   626 23    06/13/13 08:53 PM by acochran Anyone ever made a Fabry Pérot-Etalon? Eikonal   370 5    06/13/13 05:47 PM by skybadger Finder Ring Mod demiles   175 5    06/13/13 03:54 PM by gonzosc1 Nexus + Sky Safari + DSCs = a question Tim C   177 8    06/13/13 07:34 AM by Tim C Impact of 3D Printers on ATM? ( 1 2 all ) gaz-in   1165 40    06/12/13 09:32 PM by MMICKELS Antares Optics secondary mirrors? BYoesle   627 14    06/12/13 07:08 PM by Starman1 DIY Aluminizing Chamber saemark30   454 7    06/12/13 07:01 PM by Starman1 Tube diameter for 16" telescopes titanio   216 4    06/12/13 06:55 PM by Starman1 9.25 inch refractor project ( 1 2 3 4 ... 16 17 18 all ) jimegger   13105 341    06/12/13 03:12 PM by jimegger Planning a folded open 8.5" f/12.5 refractor ( 1 2 all ) Jim Chung   1854 33    06/12/13 09:18 AM by Jim Chung mirror cell question Starhuckster   226 4    06/11/13 04:54 PM by Starhuckster Range of Travel for Crayford Focuers mfoose   117 3    06/11/13 03:41 PM by mfoose Primary Mirror Cell mfoose   245 16    06/11/13 02:32 PM by Arjan 10 inch f/4.7, 1 and 3/16 northernontario   112 3    06/11/13 02:20 PM by Arjan John Battleson 1944-2013 mikey cee   349 6    06/11/13 11:01 AM by The bear Shafer Maksutov Newtonian possible? gatorengineer   245 4    06/11/13 08:00 AM by gatorengineer What size/f ratio for your NEXT scope? ( 1 2 all ) JohnH   546 26    06/11/13 07:52 AM by Mirzam Curved secondary mount StarDaddy   278 7    06/10/13 09:53 PM by StarDaddy Optical window material ( 1 2 all ) BYoesle   693 20    06/10/13 07:06 PM by BYoesle Illuminated reticle eyepiece larryW   240 3    06/10/13 11:41 AM by Geo. Pages 1 2 3 4 5 6 7 8 9 10 11 ... 624 Extra information 13 registered and 24 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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