· 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] Entrance · Main Index · Search · New user · Who's Online FAQ · Calendar Equipment Discussions >> Video and Electronically Assisted Astronomy Previous   Index   Next   Threaded   Pages: 1 James Cunningham Carpal Tunnel Reged: 08/07/10 Loc: Maryland More AGC or more integraton?       #5019210 - 01/15/12 04:33 PM Edit   Reply   Quote Quick Reply   On the Mallincam, which gives more detail - more AGC or more intgration? I am on an alt/az mount so my integration times are limited to about a minute (depending of where in the sky I am pointed). I took a picture of M042 last night and all of the outside region looked great but the very heart of the Nebulae was washed out. This was with just 3 seconds integration time which is the lowest my Mallincam can go. I am using the 11 inch SCT which has been reduced to about f/3. Thanks. Post Extras:       Stew57 Carpal Tunnel Reged: 05/03/09 Loc: Silsbee Texas Re: More AGC or more integraton? [Re: James Cunningham]       #5019245 - 01/15/12 04:53 PM Edit   Reply   Quote Quick Reply   More gain adds more noise. more integration adds star trails if your mount does not track well. Post Extras:       Trombone scholastic sledgehammer Reged: 07/11/05 Loc: Canadian west (and north!) Re: More AGC or more integraton? [Re: Stew57]       #5019349 - 01/15/12 06:13 PM Edit   Reply   Quote Quick Reply   I think the problem is the range of brightness/contrast = dynamic range. You can't expect one exposure to capture all. If exposing for the middle then outer will be too dark and if for the outside then middle is overexposed. Post Extras:       biomedchad professor emeritus Reged: 04/13/09 Loc: Marion, Ohio Re: More AGC or more integraton? [Re: Trombone]       #5019549 - 01/15/12 08:51 PM Edit   Reply   Quote Quick Reply   james, do to the difference in the range you really need 2 different exposure times to view m42 properly and then stack them. but to answer your question, agc/int time..for me it all comes down to what i am trying to look at. 75% of my xtreme use though is in ccd mode..less noise but longer int times..probably not useful for your alt/az configuration. Post Extras:       Pages: 1 Previous   Index   Next   Threaded   Extra information 0 registered and 8 anonymous users are browsing this forum. Moderator:  Undermidnight, knuklhdastnmr  Print Thread Forum Permissions       You cannot start new topics       You cannot reply to topics       HTML is disabled       UBBCode is enabled Thread views: 388 Jump to *Announcements and News* -----   Cloudy Nights Announcements   Discussion of CN Articles, Reviews, and Reports   Celestial Events*General Astronomy* -----   Beginners Forum   General Observing and Astronomy   Outreach   Light Pollution*Equipment Discussions* -----   ATM, Optics and DIY Forum   Binoculars   Binoviewers   Cats & Casses   Classic Telescopes   Equipment   Eyepieces   Mounts   Observatories   Reflectors   Refractors    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   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*Speciality Forums* -----   Arizona Science and Astronomy Expo   NEAF (Northeast Astronomy Forum) and NEAIC (Northeast Astro Imaging Conference)   AstroArt   Astronomy Clubs and Star Parties   Astronomy Software & Computers   AstroWebsites   Science! Astronomy & Space Exploration, and Others   Space Rocks   Stellar Media*Swap and Shop* -----   Shop and Swap Audio Components*CN Feedback and Vendor Announcements* -----   Vendor and Group Announcements*International Year of Astronomy 2009 - Forums are now closed.* -----   IYA Archive Info CN Forums Home

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