· 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 Astrophotography and Sketching >> DSLR & Digital Camera Astro Imaging & Processing Previous   Index   Next   Threaded   Pages: 1 Andrew Greenwood member Reged: 03/14/08 Posts: 36 Loc: Cheshire, UK ZS66 and DSLR focusing problem ...       #2368345 - 05/03/08 06:20 AM Edit   Reply   Quote Quick Reply   Hello All I am hoping someone can assist me with a slight issue. I have a William Optics ZS66 Petzval. Using the standard William Optics SCT 2" push-fit adapter and William Optics 2" camera adapter, my Nikon D50 comes to focus with about 3-4mm focus travel left before it stops against the SCT adapter. This is fine until I add my 2" IDAS light pollution filter (or any other 2" filter for that matter). It means that I have to rack the focuser in to reach focus again, but now there's not enough travel left and I can't achieve focus! Obviously, I guess I need a lower profile 2" camera adapter. Has anyone else had this same issue, and can someone point me in the right direction for the solution? I have also posted this message in the 'Refractors' section. I hope this is okay. Many thanks in advance for your help ... Best wishes Andrew -------------------- Thanks! Andrew Post Extras:       Charlie B sage Reged: 03/22/08 Posts: 241 Loc: Virginia Re: ZS66 and DSLR focusing problem ... [Re: Andrew Greenwood]       #2368534 - 05/03/08 09:57 AM Edit   Reply   Quote Quick Reply   I bought the low-profile adapters from http://www.stellar-international.com/index1.html I don't know whether they would help or not, but you can't get much closer. Regards, Charlie -------------------- Meade SN-8, DS-90, AT-66 DSI Pro II (Schuler Filters), DSI-C, LPI, Canon XTi AIP4WIN, Nebulosity, DSS, Registrax, GIMP running on Dell 1420 with Vista Post Extras:       DonR scholastic sledgehammer Reged: 11/15/06 Posts: 988 Loc: Georgia, USA Re: ZS66 and DSLR focusing problem ... [Re: Charlie B]       #2369357 - 05/03/08 06:16 PM Edit   Reply   Quote Quick Reply   This 2" adapter is as low as they get: http://www.telescope.com/control/product/~category_id=photo_accessories/~pcategory=astro-imaging/~product_id=05270 -------------------- Don ---------- Atlas EQ-G Orion 8" f/4.9 newtonian Orion 127mm Mak-Cass Orion Skyview Pro mount Orion 80mm guide scope Canon Digital Rebel XT Meade DSI Philips SPC 900 NC webcam http://www.pbase.com/dtreed/astrophotos Post Extras:       Andrew Greenwood member Reged: 03/14/08 Posts: 36 Loc: Cheshire, UK Re: ZS66 and DSLR focusing problem ... [Re: DonR]       #2371299 - 05/04/08 06:40 PM Edit   Reply   Quote Quick Reply   Thank you Charlie and Don too for your help. It's much appreciated. Andrew -------------------- Thanks! Andrew Post Extras:       Rat8bug Pooh-Bah Reged: 01/07/05 Posts: 1472 Loc: Michigan Re: ZS66 and DSLR focusing problem ... [Re: Andrew Greenwood]       #2372115 - 05/05/08 07:43 AM Edit   Reply   Quote Quick Reply   This must be peculiar to your optics design. The ZS66 APO has plenty of focus travel. I also use the Hutech IDAS filter, but filter placement has no bearing on focusing. I use the 2" stellarvue camera adapter (CA-3) with my Nikon. http://www.barrie-tao.com/zs66black.html Ciao....Barry -------------------- Nikon D40/D50/D70 DSLR WO 105mm Triplet APO WO Zenithstar 66SD APO (Black 'n Blue) WO 8 x 45mm APO Bino UO 20 x 80mm Bino Vixen 80SS Refractor Orion 127mm Apex Maksutov Vixen GP-DX with Skysensor 2000 SBIG STV and e-finder Post Extras:       Pages: 1 Previous   Index   Next   Threaded   Extra information 6 registered and 9 anonymous users are browsing this forum. 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