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Name / Constellation

NGC 147

 Other:  C 17, UGC 326

Cas
Coordinates AR: 00h 33m 12.1s, +48° 30′ 31.4″
Optics Officina Stellare 10" f8 Richtey-Cretien
Camera-Mount SBIG ST10XME - ZWO ASI 1600M (ONAG)- 10Micron GM2000 QCI Mount
Filters Astrodon Gen. II - LRGB
Exposure
  • Luminance
  • Red
  • Green
  • Blue
  • 32 x 900 sec - 8 hours
  • 9 x 300 sec - 45 min
  • 9 x 300 sec - 45 min
  • 9 x 300 sec - 45 min
  • UNBINNED
  • BINNING 2x2
  • BINNING 2x2
  • BINNING 2x2
Location / Date Promiod (Valle D'Aosta-Italy) "TLP" Remote Observatory - Sept 2023
Seeing 2.8" @ 0.7 arcosec/pixel unbinned
Note  
Acquisition N.I.N.A.
Processing Adobe Photoshop CC -
Comment

 

NGC 147, (also known as C 17), is a dwarf spheroidal galaxy visible in the constellation of Cassiopeia.
Together with the dwarf elliptical galaxy NGC 185, it is part of a pair that orbits the large Andromeda Galaxy. Its brightness is slightly lower than that of its companion, but this is only due to its greater distance from the Milky Way: in fact, it is slightly larger in size. It was resolved into stars in 1944 by the astronomer Walter Baade, just like its companion, and here too an intense star formation has been highlighted that occurred in relatively recent times. However, unlike its companion, there is also a notable population of older stars, and no H I areas, or areas rich in neutral hydrogen, are evident in its interstellar medium.