NGC 253 (Sculptor Galaxy) and the globular cluster NGC 288

Size: 2000 px
© Velimir Popov & Emil Ivanov 2014

NGC 253 (also known as the Silver Dollar Galaxy, Silver Coin or Sculptor Galaxy, or Caldwell 65) is a spiral galaxy in the constellation Sculptor. It is currently undergoing a period of intense star formation. The galaxy was discovered by Caroline Herschel in 1783. It is described by Allan Sandage in 1961 as "the prototype example of a special subgroup of Sc systems". The Sculptor Galaxy is located at the center of the Sculptor Group, one of the nearest groups of galaxies to the Milky Way. The estimated distance of NGC 253 is about 11.4 Mly (3.5 Mpc). About 1.8° southeast of the galaxy NGC 253 is located the globular cluster NGC 288 (top left on this image). It is not very concentrated and has a well resolved, 3' large dense core that is surrounded by a much more diffuse and irregular 9' diameter ring. Peripheral members extend farther outward towards the south and especially southwest. This cluster lies only 37′ north-northeast of the South Galactic Pole.

Image details


Center of field RA 00:49:47 (h:m:s)
Center of field DE -25:54:32 (deg:m:s)
Size 57.2 x 43.2 (arcmin)
Pixel scale: 2.52 x 1.85 (arcsec/pixel)
Orientation: Up is -90.9 degrees E of N


Charts and image details obtained from


Optic(s): 16" f3,75 Dream Corrected Astrograph (DCA)
Mount: Astelco NTM-500 direct drive mount
Camera: Apogee Alta U-16M CCD camera
Filters: Lum, Red, Green, Blue, Astrodon
Dates/Times: 27, 28 & 30 Aug 2014
Location: Namibia-TIVOLI ASTROFARM, S 23° 27' 40,9" / E 18° 01' 02,2"
Exp. Details: L: 4x10min, R: 3x10min, G: 3x10min, B: 3x10min, Bin 1
  Total Exposure Time - 520 (4 x 130) min (8:40 hours)
More details: Dark and flat frames reduction, four panel mosaic
Processing: PixInsight / PS
Copyright: Velimir Popov and Emil Ivanov 2014. All Rights Reserved
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