Messier 81

58. Messier 81


Messier 81  RA: 9h 55.6'  Dec: +69 04'   Ursa Major (UMa)

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Messier 81 (also known as NGC 3031 or Bode's Galaxy) is a grand design spiral galaxy about 12 million light-years away, with a diameter of 90,000 light years, in the constellation Ursa Major. Due to its proximity to our galaxy, large size, and active galactic nucleus (which harbors a 70 million M☉supermassive black hole), Messier 81 has been studied extensively by professional astronomers. The galaxy's large size and relatively high brightness also makes it a popular target for amateur astronomers.
 

Image Information

Location Fingal ON
Date June 1 2008
Optics Celestron C8
Filters f6.3 reducer/flattener
Mount Celestron CGE
Camera Canon Rebel XT
ISO 800
Subexposures 9
Exposure Length 300ish
Guider Stellarvue Nighthawk II/ST-4
 

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All images copyright © 2006-2021, Rick Saunders
Main text descriptions sourced from Wikipaedia.
Sky position information is based on IP geolocation and is therefore approximate.