You are not logged in. [Login] Entrance · Main Index · Search · New user · Who's Online FAQ · Calendar

Astrophotography and Sketching >> CCD Imaging & Processing Previous   Index   Next   Threaded

Pages: 1 Dan Crowson sage Reged: 10/08/10 Loc: O'Fallon, MO NGC 3079 and the Twin Quasar - AT6RC       #5630250 - 01/18/13 04:55 PM Edit   Reply   Quote Quick Reply   NGC 3079 is a barred spiral galaxy approximately 50 million light-years away in Ursa Major. The Hubble has shown this galaxy to have a bubble in the center created by large bursts of star formation. The more interesting object in this image is the Twin Quasar (also the Double Quasar or Old Faithful). In simple terms, quasars are compact regions at the center of a galaxy that are much brighter than the rest. These are so bright that they show up as pin-point objects like stars and can be billions of light-years away. More information can be found here - Wikipedia. What makes the Twin Quasar somewhat unique is that it is a single object. It is located approximately 8.7 billion light-years away. There’s a galaxy (YGKOW G1) approximately 3.7 billion light-years away that is positioned between Earth and the quasar. This galaxy bends the light from the quasar so that it shows up as two light sources. This phenomenon is called gravitational lensing. First described by Orest Chwolson, but usually associated with Einstein, observations didn’t prove this until the Twin Quasar was discovered in 1979. The two mag 17 light sources are separated by 6 arcseconds. The light from one of them reaches us approximately 417 days before the other. Thanks to Haren Boren for posting his image to “suggest” this target. There’s just something neat about imaging an object 8.7 billion light-years away from my driveway in the city. Luminance – 12x600s – 120 minutes – binned 1x1 RGB – 4x600s – 40 minutes each – binned 2x2 240 minutes total exposure – 4 hours Imaged January 13th, 2013 with a SBIG ST-8300M on a 6” Astro-Tech AT6RC at f/9 1368mm. See the full size image links below. LRGB Full Size LRGB Annotated Full Size Dan Post Extras:       Footbag Carpal Tunnel Reged: 04/13/09 Loc: Scranton, PA Re: NGC 3079 and the Twin Quasar - AT6RC [Re: Dan Crowson]       #5630267 - 01/18/13 05:10 PM Edit   Reply   Quote Quick Reply   Very nice image! I love these targets and hope we see a lot more of them. This particular quasar probably gets more attention due to its proximity to NGC3079 and the ability to split it without very large equipment. I'm not going to say it's easy, but all of the others seem tougher. Post Extras:       jmasin Carpal Tunnel Reged: 12/22/08 Loc: Murphy, TX (DFW) Re: NGC 3079 and the Twin Quasar - AT6RC [Re: Footbag]       #5630790 - 01/18/13 11:17 PM Edit   Reply   Quote Quick Reply   Cool image Dan... very, very cool. Really enjoy stuff like this. It isn't "pretty", as far as colors and such, but what it is is just flat cool...8.7BLY away... nice. Post Extras:       agmakr member Reged: 12/14/07 Loc: Agrinio, Greece Re: NGC 3079 and the Twin Quasar - AT6RC [Re: jmasin]       #5631044 - 01/19/13 04:46 AM Edit   Reply   Quote Quick Reply   Inspiring image, thanks for sharing. Post Extras:       Bill Snyder scholastic sledgehammer Reged: 05/17/09 Loc: Pennsylvania. USA Re: NGC 3079 and the Twin Quasar - AT6RC [Re: agmakr]       #5631782 - 01/19/13 03:39 PM Edit   Reply   Quote Quick Reply   Interesting image and interesting write up! Bill Post Extras:       mcarroll scholastic sledgehammer Reged: 08/28/10 Loc: Greensboro, NC Re: NGC 3079 and the Twin Quasar - AT6RC [Re: Bill Snyder]       #5632231 - 01/19/13 09:17 PM Edit   Reply   Quote Quick Reply   Great image Dan, and very interesting! Post Extras:       JWalk scholastic sledgehammer Reged: 06/06/10 Loc: San Antonio, TX Re: NGC 3079 and the Twin Quasar - AT6RC [Re: mcarroll]       #5632477 - 01/20/13 12:10 AM Edit   Reply   Quote Quick Reply   Very cool shot! Post Extras:       Harel_Boren Vendor-The Boren-Simon PowerNewt Astrograph Reged: 03/15/09 Loc: Israel Re: NGC 3079 and the Twin Quasar - AT6RC [Re: JWalk]       #5632577 - 01/20/13 02:29 AM Edit   Reply   Quote Quick Reply   Very nice Dan, and thanks for mentioning my image to :-) I like it, and indeed 8.7 billion years old light is a treat saved for AP of all hobbies ! Cheers, Harel Post Extras:       broca Pooh-Bah Reged: 03/26/10 Loc: Ocala, FL Re: NGC 3079 and the Twin Quasar - AT6RC [Re: Dan Crowson]       #5632694 - 01/20/13 07:20 AM Edit   Reply   Quote Quick Reply   There’s just something neat about imaging an object 8.7 billion light-years away from my driveway in the city. Anyone who struggles from time to time at this hobby needs to look at your quote. Nice image and a very interesting write up to go with it. Well done. Post Extras:       Pages: 1

Previous   Index   Next   Threaded

Extra information 20 registered and 22 anonymous users are browsing this forum. Moderator:  Oldfield, bilgebay  Print Thread Forum Permissions       You cannot start new topics       You cannot reply to topics       HTML is disabled       UBBCode is enabled Thread views: 574 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