· 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 Falcon- sage Reged: 09/11/09 Posts: 241 Loc: Gambier Island, BC, Canada 3-frame Horsehead attempt       #3421223 - 10/31/09 12:18 AM Attachment (26 downloads) Edit   Reply   Quote Quick Reply   Last monday's single clear night let me attempt a few targets - since I had what seemed to be a good polar alignment I decided to try and push the limits of my setup and attempt the Horsehead Nebula. Given the fact that I was shooting unguided on a CG-5, with an unmodified camera, through a medium level of light-polution with no filters, and on a night with the moon only just set I am rather happy to have gotten *anything* out of the attempt! I did not have much time to work on this, so this is a stack of only 3 frames of 5 minutes each, no darkframes. I did do bad-pixel removal from a temperature mismatched bad-pixel file from an imaging session a month previous and it helped. A jpg version of the full-resolution file can be found here. I hope that I am able to get back to this target with no moon and a guide camera/scope before it sets again for the season! - Sean -------------------- Tasco 11TE-5 'Lunagrosso': 4.5" Newtonian, 900mm f/7.9 Meade DS-2114S: 4.5" Newtonian, 1000mm f/8.8 Galileoscope: 50mm Achromatic Refractor, 500mm f/10 Tasco EQ-2-like mount w/ clock drive Celestron CG-5GT mount Post Extras:       Nils_Lars Post Laureate Reged: 01/04/08 Posts: 3431 Loc: Santa Cruz Mountains , CA Re: 3-frame horsehead attempt [Re: Falcon-]       #3421247 - 10/31/09 12:33 AM Edit   Reply   Quote Quick Reply   I think all things considered that is a super shot , you could always use more subs but thats always true. This is a tough target for an unmodded camera but you are pulling a lot out of it. -------------------- Erik Orion Atlas Self Hypertuned (EQMOD) Orion ED 80 Williams Optics VII reducer Celestron 8" SCT Orion Starshoot Autoguider PHD guide Canon 400D Hap Griffin Mod w/Baader filter Astronomik clip-in LP filter and 12nm Ha Stilleto CVF and Bahtinov mask Tamron 75-300mm&28-80mm lenses NexImage webcam http://www.flickr.com/photos/31986095@N05/ Post Extras:       Falcon- sage Reged: 09/11/09 Posts: 241 Loc: Gambier Island, BC, Canada Re: 3-frame horsehead attempt [Re: Nils_Lars]       #3421339 - 10/31/09 02:01 AM Edit   Reply   Quote Quick Reply   ya, this was just one of those "can I get anything from this *AT ALL*?" curiosity shots. -------------------- Tasco 11TE-5 'Lunagrosso': 4.5" Newtonian, 900mm f/7.9 Meade DS-2114S: 4.5" Newtonian, 1000mm f/8.8 Galileoscope: 50mm Achromatic Refractor, 500mm f/10 Tasco EQ-2-like mount w/ clock drive Celestron CG-5GT mount Post Extras:       Pages: 1 Previous   Index   Next   Threaded   Extra information 17 registered and 15 anonymous users are browsing this forum. 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