24  July  2016
  Bode's Galaxy

 By       Thomas LELU
www.astrophotographie-lorraine.com/ )

Messier 81 (also known as NGC 3031 or Bode's Galaxy) is a spiral galaxy about 12 million light-years away in the constellation Ursa Major.
Due to its proximity to Earth, large size and active galactic nucleus (which harbors a 70 million M☉[8] supermassive black hole),
Messier 81 has been studied extensively by professional astronomers. The galaxy's large size and relatively high brightness also make it a popular target for amateur astronomers.

Technical data :
Bode’s Galaxy in France
Date : Between April and May
Location : Lorraine (France)
camera : ATIKOne 6.0
Guidage : ATIKGP
telescope : NEWTON 12"
pixel size of camera : 4,54um
lens aperture and focal ratio : 254mm/1000mm F/D=4
exposure times : 29 hours


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