M81 – Bode’s Galaxy (OSC)

M81 – Bode’s Galaxy

M81, Bodes Galaxy, is a spiral galaxy discovered by Johann Bode in 1774. It lies 12 million light years away in the constellation Ursa Major and contains a supermassive black hole with an estimated mass 70 million times that of the Sun. A supernova was observed in M81 in 1993. M81 is the largest of a group of 34 galaxies located in Ursa Major, which is part of the Virgo Supercluster of galaxies along with the Milky Way. M81 shines at magnitude 6.9.

  • Date – March/April 2017
  • Location – Backyard
  • Telescope – Meade 8” SCT @ f/10 (2000mm focal length)
  • Camera – Canon T3i @ ISO 400
  • Guiding – Orion Starshoot Autoguider w/50mm Guidescope
  • Mount – Orion Atlas Pro AZ/EQ-G
  • Pixel Scale – 0.56″/pixel
  • Exposures
    • 4x300s (3/23)
    • 10x600s (3/29)
    • 4x480s (4/2)
    • 15x480s (4/4)
    • 10x480s (4/8)
    • 4x480s (4/12)
    • Total integration: 6.4 hours
  • Processing – PixInsight
 


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