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Contains:  Bode's nebulae, M 81, NGC 3031
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Bodes "Nebula", Galaxy M81, 


            Steven Bellavia
Bodes "Nebula", Galaxy M81
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Bodes "Nebula", Galaxy M81

Technical card

Dates:Jan. 6, 2019Jan. 25, 2019

Optolong L: 12x300" (gain: 100.00) -15C bin 2x2
Baader Semi-APO 2": 40x180" (gain: 100.00) -15C bin 1x1

Integration: 3.0 hours

Darks: ~21

Avg. Moon age: 10.02 days

Avg. Moon phase: 37.78%

Bortle Dark-Sky Scale: 4.00

Temperature: -5.00

Basic astrometry details job: 2487852

RA center: 9h 55' 32"

DEC center: +69° 3' 50"

Pixel scale: 1.066 arcsec/pixel

Orientation: 357.857 degrees

Field radius: 0.480 degrees

Resolution: 2700x1800

Data source: Backyard


Bodes "Nebula" , Messier object M81, is actually a spiral galaxy about 12 million light-years away, with at diameter of 90,000 light years, about half the size of the Milky Way, in the constellation Ursa Major.
Messier 81 was first discovered by Johann Elert Bode on December 31, 1774. Consequently, the galaxy is sometimes referred to as "Bode's Galaxy". In 1779, Pierre Méchain and Charles Messier reidentified Bode's object, which was subsequently listed in the Messier Catalogue. Messier 81 is located approximately 10° northwest of Alpha Ursae Majoris along with several other galaxies in the Messier 81 Group.



Steven Bellavia
License: None (All rights reserved)

Sky plot

Sky plot


Bodes "Nebula", Galaxy M81, 


            Steven Bellavia