TrevorW
15-10-2009, 10:30 PM
Target: NGC253 Sculptor Galaxy
Camera: Canon 350d modified, Astronomik CLS clip filter
Exposure Capture: DLSR Focus
Scope: GSO CF RC200
EFR: f/8
Mount: EQ6 Pro
Exposure Setting: Prime focus, ISO800 ICNR off Daylight WB
Exposures: 23 x 330s lights taken between 8:00 and 11:00pm 14/10/09
Seeing: no moon
Guiding: Orion Starshoot Autoguider using PHD with ED80
Focus: DSLR Focus
Stacking: DSS no darks or flats
Processing: PS CS3
Right Ascension 00 : 47.6 (h:m)
Declination -25 : 17 (deg:m)
Distance 10000.0 (kly)
Visual Brightness 7.1 (mag)
Apparent Dimension 25 x 7 (arc min)
Discovered by Caroline Herschel in 1783.
NGC 253 is the brightest member of the Sculptor group (http://seds.org/Messier/xtra/ngc/sclgr.html) of galaxies, which is grouped around the South galactic pole (therefore, also sometimes named "South Polar Group"). The Sculptor group is perhaps the nearest to our Local Group of galaxies (http://seds.org/Messier/more/local.html). NGC 253 is also one of the brightest galaxies beyond the Local Group. The RASC Observer's Handbook gives the common name Silver Coin Galaxy for NGC 253; it is also referred to as the Sculptor Galaxy.
NGC 253 was one of the major discoveries of Caroline Herschel (http://seds.org/Messier/xtra/Bios/cherschel.html), the sister of William Herschel (http://seds.org/Messier/xtra/Bios/wherschel.html). She discovered this object on September 23, 1783 with "an excellent small Newtonian Sweeper" of 27 inches focal length and a power of 30 (William Herschel's description), and added it to her list (http://seds.org/Messier/xtra/similar/cher.html) as No. 10. William Herschel included it in his catalog (http://seds.org/Messier/xtra/similar/herschel.html) as No. V.1.
Camera: Canon 350d modified, Astronomik CLS clip filter
Exposure Capture: DLSR Focus
Scope: GSO CF RC200
EFR: f/8
Mount: EQ6 Pro
Exposure Setting: Prime focus, ISO800 ICNR off Daylight WB
Exposures: 23 x 330s lights taken between 8:00 and 11:00pm 14/10/09
Seeing: no moon
Guiding: Orion Starshoot Autoguider using PHD with ED80
Focus: DSLR Focus
Stacking: DSS no darks or flats
Processing: PS CS3
Right Ascension 00 : 47.6 (h:m)
Declination -25 : 17 (deg:m)
Distance 10000.0 (kly)
Visual Brightness 7.1 (mag)
Apparent Dimension 25 x 7 (arc min)
Discovered by Caroline Herschel in 1783.
NGC 253 is the brightest member of the Sculptor group (http://seds.org/Messier/xtra/ngc/sclgr.html) of galaxies, which is grouped around the South galactic pole (therefore, also sometimes named "South Polar Group"). The Sculptor group is perhaps the nearest to our Local Group of galaxies (http://seds.org/Messier/more/local.html). NGC 253 is also one of the brightest galaxies beyond the Local Group. The RASC Observer's Handbook gives the common name Silver Coin Galaxy for NGC 253; it is also referred to as the Sculptor Galaxy.
NGC 253 was one of the major discoveries of Caroline Herschel (http://seds.org/Messier/xtra/Bios/cherschel.html), the sister of William Herschel (http://seds.org/Messier/xtra/Bios/wherschel.html). She discovered this object on September 23, 1783 with "an excellent small Newtonian Sweeper" of 27 inches focal length and a power of 30 (William Herschel's description), and added it to her list (http://seds.org/Messier/xtra/similar/cher.html) as No. 10. William Herschel included it in his catalog (http://seds.org/Messier/xtra/similar/herschel.html) as No. V.1.