NGC457 Open cluster - OWl, E.T.

NGC 457 is an open star cluster in the constellation Cassiopeia. It was discovered by William Herschel in 1787 and lies over 7,900 light years away from the Earth. It has an estimated age of 21 million years. Also known as the Owl Cluster, the ET Cluster, or Caldwell 13.

Photo Details

  Telescope: FSQ106EDX (530 mm) Takahashi

  Camera: Sbig ST-8300M, Sbig Filter wheel, Baader 36mm round HLRGB filters

  Mount: Takahashi NJP

  Guiding: Off-axis, Orion SS Autoguider

  Exposure: LRGB L 7x300sec, R 5x300sec, G 5x300sec, B 5x300sec

  When: October 2013

  Other information: Very good seeing and transpatrency


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