M81 - M82 HaLRGB crop v1.0

WO 80mm APO with QHY9m

Exposure 22hrs 45 mins

 

Messier 81 is a grand design spiral galaxy about 12 million light-years away, with a diameter of 90,000 light years, about half the size of the Milky Way, in the constellation Ursa Major. Wikipedia

Distance to Earth: 11.74 million light years

Magnitude: 6.94

Apparent size (V): 26.9 × 14.1 moa

Redshift: −0.000113

Galactocentric velocity: 73

Coordinates: RA 9h 55m 33s | Dec +69° 3′ 55″

 

Messier 82 is a starburst galaxy approximately 12 million light-years away in the constellation Ursa Major. A member of the M81 Group, it is about five times more luminous than the whole Milky Way and has a center one hundred times more luminous than our galaxy's center. Wikipedia

Distance to Earth: 11.42 million light years

Magnitude: 8.41

Coordinates: RA 9h 55m 52s | Dec +69° 40′ 47″

Apparent size (V): 11′.2 × 4′.3

Redshift: 203±4 km/s

Stars: 30 billion

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