Celestial hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  Bode's nebulae  ·  M 81  ·  NGC 3031
M81,  Constantino
M81
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M81

M81,  Constantino
M81
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M81

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Description

URBAN ASTROPHOTOGRAPHY (review)

M81 is a spiral galaxy (Bode Galaxy) with 250 billion stars, from the constellation Ursa Major located at a distance of 12,000,000 light years (approximate values).

The acquisition of images was made at the Sombrero Observatory in Póvoa de Varzim - Portugal, from 03/12 to 03/23/2019.

Bortle scale 9, SQM = 15.33 mag / arc sec2, radiance information 93.73 x 10-⁹ W / m2 (color of the Red sky !!!) Constantino.

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M81,  Constantino