NGC 147 is a dwarf spheroidal galaxy about 2 milion light years away in the constellation Cassiopeia. It was discovered by John Herschel in September 1829. NGC 147 is a member of the Local group of galaxies and a satellite galaxy of the Andromeda Galaxy. It forms a physical pair with the nearby galaxy NGC 185, another satellite of M31. The membership of NGC 147 in the Local Group was confirmed by Walter Baade in 1944 when he was able to resolve the galaxy into individual stars with the 100-inch (2.5 m) telescope at Mount Wilson. Further research allowed identify distant globular cluster associated with this galaxy.

Photo Details

  Telescope: Celestron C8N (1000mm)

  Camera: Sbig ST-2000XM, Sbig Filter wheel, Baader 1.25" HLRGB filters

  Mount: NJP Takahashi

  Guiding: Self-guided

  Exposure: LRGB L 18x720sek, R 5x600sek, G 5x600sek, B 5x600sek

  When: September 2011

  Other information: good transparency, good seeing


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