· 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] Forum Archives · Entrance · Main Index · Search · New user · Who's Online FAQ · Calendar Astrophotography and Sketching >> DSLR & Digital Camera Astro Imaging & Processing Previous   Index   Next   Threaded   Pages: 1 John Jarosz Astro Gearhead Reged: 04/25/04 Posts: 2298 Loc: Chicago area, IL Dimension information on DSLR's       #2138302 - 01/22/08 03:12 PM Edit   Reply   Quote Quick Reply   Hi, first post in this forum. There a few of us working on some imaging scopes in ATM. Can someone point me to a webpage that has dimensional information on DSLR's? Specifically I'm looking for where the chip plane is with respect to the lens mount on various cameras. Is it a standardized dimension? How about for a Canon XTI, or XT (350D) ? Does anyone show a cross section of the camera with the chip and lens mounting flange? Thanks John -------------------- 6" F4.6(w/Paracorr) GEM reflector, 8" F11 Dall Relay Scope 6" F5 RFT Refractor, Garrett Gemini 20x80 LW Post Extras:       NeoDinian Experienced Postmaster Reged: 10/05/05 Posts: 12951 Loc: Rockford Illinois Re: Dimension information on DSLR's [Re: John Jarosz]       #2138621 - 01/22/08 05:41 PM Edit   Reply   Quote Quick Reply   It would be different for every camera model... The Stiletto website shows how to measure this for adjusting their focuser... -------------------- Neo... (Jeff) -=-=-=-=-=-=- 10" LX200-GPS/SMT UHTC "Draco" Rockford, Il. NeoDinian's Eye on the Sky! Coming soon: Post Extras:       ccs_hello Post Laureate Reged: 07/03/04 Posts: 3484 Re: Dimension information on DSLR's [Re: John Jarosz]       #2138717 - 01/22/08 06:32 PM Edit   Reply   Quote Quick Reply   John, It's called "Flange to focal plane distance". For Canon EOS mount, it's 44mm. Google to find others. (If you need something specific, I have the info.) Clear Skies! ccs_hello Post Extras:       MartyT professor emeritus Reged: 09/28/07 Posts: 682 Loc: Kansas City Re: Dimension information on DSLR's [Re: ccs_hello]       #2139137 - 01/22/08 09:19 PM Edit   Reply   Quote Quick Reply   Found this web page with the distances for many cameras: http://www.bobatkins.com/photography/eosfaq/manual_focus_EOS.html Ooh -- even better - on Wikipedia: http://en.wikipedia.org/wiki/Flange_focal_distance -------------------- Celestron CGE / C-11 (CGE-1100) Megrez 90 FD APO / 0.8x FR/FF vIII QHY8, 350D, DSI Pro, SPC900NC KWIQ Guider (QHY5) ETX-125AT 12" Lightbridge My Astrophoto Gallery Astronomical Society of Kansas City Edited by MartyT (01/22/08 09:20 PM) Post Extras:       John Jarosz Astro Gearhead Reged: 04/25/04 Posts: 2298 Loc: Chicago area, IL Re: Dimension information on DSLR's [Re: MartyT]       #2139787 - 01/23/08 07:55 AM Edit   Reply   Quote Quick Reply   Thanks everyone. I suprized the Wikipedia had this too. Marty: That Bob Atkins site is good! Thanks John -------------------- 6" F4.6(w/Paracorr) GEM reflector, 8" F11 Dall Relay Scope 6" F5 RFT Refractor, Garrett Gemini 20x80 LW Post Extras:       Pages: 1 Previous   Index   Next   Threaded   Extra information 6 registered and 6 anonymous users are browsing this forum. 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