· 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 James Kalemis member Reged: 06/02/08 Posts: 64 Loc: Chicago, IL M33 with too much noise       #3397870 - 10/19/09 11:58 AM Edit   Reply   Quote Quick Reply   Hi folks, Last night I imaged M33 from my backyard. I used my AT8RC with a WO 0.8x reducer/flattener, guided by Orion SAG on Borg 45ED, all on Orion Sirius. Took 47 90-sec shots and 3 darks. Using DeepSkyStacker and Photoshop for processing. All my attempts are too noisy. Can someone please take a look at the file and tell me if it's salvageable. THANKS!!! http://www.kalemis.com/m33.zip -------------------- William Optics M110 Astro Tech 8 RC Willim Optics ZS70 Burgess 127 F8 SN001 Borg 45ED Orion XT12 Intelliscope http://darkerskies.blogspot.com/ Post Extras:       waassaabee Carpal Tunnel Reged: 11/26/07 Posts: 2700 Loc: Central California Coast Re: M33 with too much noise [Re: James Kalemis]       #3397942 - 10/19/09 12:34 PM Edit   Reply   Quote Quick Reply   It seems to me you would need more darks. I shoot a minimum of 16 if I don't have anything suitable in my library (where I maintain 40 frames of various ISO/exposure/temp combos). -------------------- Gary 34N 120W -My kingdom for blue squares!- WO Megrez 90FD/TV 0.8x FR/FF AT8RC mini Borg 50/Q-Guide/PHD CGEM Canon 350D Hap Griffin Baader mod - o.o My Friend Flickr Post Extras:       James Kalemis member Reged: 06/02/08 Posts: 64 Loc: Chicago, IL Re: M33 with too much noise [Re: waassaabee]       #3398211 - 10/19/09 02:49 PM Edit   Reply   Quote Quick Reply   Thanks Gary. Presuming same temperature, I can take darks anytime with just a lenscap over the camera, no scope. Correct? -------------------- William Optics M110 Astro Tech 8 RC Willim Optics ZS70 Burgess 127 F8 SN001 Borg 45ED Orion XT12 Intelliscope http://darkerskies.blogspot.com/ Post Extras:       WarrenS scholastic sledgehammer Reged: 03/04/08 Posts: 892 Loc: Orange County New York Re: M33 with too much noise [Re: James Kalemis]       #3398268 - 10/19/09 03:15 PM Edit   Reply   Quote Quick Reply   That's true, however if you shoot darks in the daytime make sure you cover the camera viewfinder with either the supplied cover or black electrical or duct tape. I shoot my darks the following morning with the temp within 5-10 degrees of the previous nights imaging. -------------------- 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:       Nils_Lars Post Laureate Reged: 01/04/08 Posts: 3422 Loc: Santa Cruz Mountains , CA Re: M33 with too much noise [Re: WarrenS]       #3399498 - 10/20/09 03:03 AM Edit   Reply   Quote Quick Reply   Ya darks are anytime with similar temp as long as the camera is dark. I think 30 darks are minimum and 40 or more if you can and that should make a huge difference. -------------------- 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:       HrAstro sage Reged: 12/24/06 Posts: 323 Re: M33 with too much noise [Re: Nils_Lars]       #3399838 - 10/20/09 10:04 AM Edit   Reply   Quote Quick Reply   hmmm.. usually I don't make more then 10 darks But, that's me -------------------- HrAstro - Deepsky astronomical photographs, tips and techniques for astrophotography Post Extras:       Pages: 1 Previous   Index   Next   Threaded   Extra information 13 registered and 5 anonymous users are browsing this forum. Moderator:  Charlie Hein, knuklhdastnmr  Print Thread Forum Permissions       You cannot start new topics       You cannot reply to topics       HTML is disabled       UBBCode is enabled Thread views: 152 Jump to *International Year of Astronomy 2009* -----   Global Coordination   Cornerstone Projects   Special Projects   Special Task Groups   Global Activities   National and Regional Activities   IYA 2009 in Africa   IYA 2009 in the USA*Announcements and News* -----   Cloudy Nights Announcements   Discussion of CN Articles, Reviews, and Reports   Beginners Forum   Celestial Events   Light Pollution*Equipment Discussions* -----   ATM, Optics and DIY Forum   Binoculars   Binoviewers   Cats & Casses   Classic Telescopes   Equipment   Eyepieces   Mounts   Observatories   Reflectors   Refractors    Celestron SkyScout and Meade mySky   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   General Observing   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*Other* -----   Science of Astronomy & Space Exploration   AstroWebsites   Space Rocks*Speciality Forums* -----   AstroArt   Astronomy Software & Computers   Stellar Media   Astro Outreach, Clubs and Star Parties*CN Feedback and Vendor Announcements* -----   Vendor and Group Announcements CN Forums Home

Cloudy Nights Sponsor: Astronomics