· 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 tommyhawk13 professor emeritus Reged: 09/28/07 Posts: 698 Loc: Jacksonville, Fl Film user introducing ap to digital user       #3421629 - 10/31/09 10:35 AM Edit   Reply   Quote Quick Reply   I know very little about doing astrophotography with a DSLR, since I only shoot film. A friend of mine has a Canon SDII (un-modded of course), and wants to try some shots through my f/4 SN-8. I will have it polar aligned, and show him how to manually guide, but I know there are issues with subs, lights and darks. I tried to explain why they were necessary, but every time I do, it seems like my digital friends get offended. I'm going to suggest M-42 for his first target. He has a cable release, and will have a T-mount. Any advice I can offer about exposure times, subs, lights, darks, and ISO settings? -------------------- Meade Starfinder 8,Meade SN-8 OTA, Orion Atlas, and a handfull of film cameras Post Extras:       Rankinstudio sage Reged: 04/05/08 Posts: 425 Loc: Salt Lake City, UT, Lake Powel... Re: Film user introducing ap to digital user [Re: tommyhawk13]       #3421914 - 10/31/09 01:36 PM Edit   Reply   Quote Quick Reply   Tommy, Have him read this before he gets started http://deepskystacker.free.fr/english/theory.htm cheers -------------------- David Rankin http://www.rankinstudio.com Astro Gallery Orion 254mm F4.7 (imaging scope) Baader MPCC Quickcam pro 9000 (guider, imager) Canon Rebel XSi (self modified) Atlas EQ-G (EQ MOD) Canon 50mm F1.8 II Lens Canon 28-200 F3.2 Lens DSLR peltier cooler Post Extras:       justabob Carpal Tunnel Reged: 05/05/07 Posts: 1685 Re: Film user introducing ap to digital user [Re: Rankinstudio]       #3422493 - 10/31/09 07:43 PM Edit   Reply   Quote Quick Reply   What is a Canon SDII? This is not a dslr is it? -------------------- http://www.pbase.com/rkn/astro&page=all Vixen Sphinx SXW Meade sn6 Canon EF 200mm f/2.8L II USM Lens Hutech 1000d Self modded 350d ST8300c on order DSI PRO II Bob Post Extras:       tommyhawk13 professor emeritus Reged: 09/28/07 Posts: 698 Loc: Jacksonville, Fl Re: Film user introducing ap to digital user [Re: justabob]       #3423491 - 11/01/09 10:26 AM Edit   Reply   Quote Quick Reply   It's probably a misunderstanding. It's definitely a DSLR, that much I know. -------------------- Meade Starfinder 8,Meade SN-8 OTA, Orion Atlas, and a handfull of film cameras Post Extras:       WarrenS scholastic sledgehammer Reged: 03/04/08 Posts: 897 Loc: Orange County New York Re: Film user introducing ap to digital user [Re: tommyhawk13]       #3424315 - 11/01/09 07:09 PM Edit   Reply   Quote Quick Reply   Must be the Canon 5D mark II as in "five dee". -------------------- Warren Astro-Tech 127EDT Celestron Onyx 80ED Astro-Tech Field Flattener C8 (circa 1983 Orange Tube) Atlas EQ-G, Orion SSAG Canon 135mm F2.8 Canon 40D, Astronomik CLS clip filter Leica, Minolta binos Post Extras:       justabob Carpal Tunnel Reged: 05/05/07 Posts: 1685 Re: Film user introducing ap to digital user [Re: WarrenS]       #3424582 - 11/01/09 09:47 PM Edit   Reply   Quote Quick Reply   Ok, this makes sense. Pretty fancy camera, he should do well with an sn8. The core of m42 will blow out very quickly with a dslr. Maybe go with 30 sec exposures at iso 800 in raw mode. -------------------- http://www.pbase.com/rkn/astro&page=all Vixen Sphinx SXW Meade sn6 Canon EF 200mm f/2.8L II USM Lens Hutech 1000d Self modded 350d ST8300c on order DSI PRO II Bob Post Extras:       Pages: 1 Previous   Index   Next   Threaded   Extra information 15 registered and 14 anonymous users are browsing this forum. 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