Celestial hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  Bode's Galaxy  ·  M 81  ·  NGC 3031  ·  PGC 2724146  ·  PGC 2726822  ·  PGC 2730379  ·  PGC 2730409  ·  PGC 28505  ·  PGC 28529  ·  PGC 28757  ·  PGC 28848
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Ursa Major 's beauty - Bode 's Galaxy M81 - V2, Arnaud Peel
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Ursa Major 's beauty - Bode 's Galaxy M81 - V2

Getting plate-solving status, please wait...
Ursa Major 's beauty - Bode 's Galaxy M81 - V2, Arnaud Peel
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Ursa Major 's beauty - Bode 's Galaxy M81 - V2

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Description

version 2 , new version much better ;-)

Finally , one of my favorite galaxies, M81 is a real challenge, so famous and not easy to process . Its core is very bright, and delicate dust lanes seem to evaporate around the nucleus. Some nice HII nodules can be also be enhanced with an Ha layer.

I threw away half of my lum data , and waited for perfect nights to get nice FWHM Luminance subs.

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, about half the size of the Milky Way

4 nights : 14,15, 17/18, 28, 30/31 march

128 Light subs @180s gain zero and -20°C and

72 Halpha subs @300s gain 139 and -20°C and

20 Blue subs @180s gain zero and -20°C

20 Green subs @180s gain zero and -20°C

20 Red subs @180s gain zero and -20°C

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    Ursa Major 's beauty - Bode 's Galaxy M81 - V2, Arnaud Peel
    Original
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    Ursa Major 's beauty - Bode 's Galaxy M81 - V2, Arnaud Peel
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Ursa Major 's beauty - Bode 's Galaxy M81 - V2, Arnaud Peel