NGC5204 in Ursa Major (Jean-Pierre Lees)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: NGC 5204

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NGC5204 in Ursa Major

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NGC5204 in Ursa Major

NGC5204, une galaxie spirale vue de face et distante de 14 millions d années lumière dans la constellation de la Grande Ourse. Elle a une dimension angulaire d'approximativement 5'x3' et montre de nombreuses régions HII très brillantes. Teescope Meade LX200 ACF de 25 cm de diamètre à f/10, image LRGB de 90, 15, 15 et 15mn, binning x2 pour la couleur

This remarkable galaxy has unfortunately a very low brightness and would require much more exposition time. It was discovered by William Herschel on 24 april 1789. It is a large, almost face on, spiral galaxy with a large core irregular in form and a fragmentary and difficult to trace spiral structure. The entire enveloppe is peppered with bright, knotty HII regions, some of them quite large. I will retry imaging it with a much longer integrated exposure time. Angular size 5'x3', distance 14 mly.

AAA : Astronomes et Astrographes Amateurs

Galaxies
Photos astronomiques 2019

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Astrometry.net job	6765239
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NGC5204 in Ursa Major

NGC5204 in Ursa Major

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NGC5204 in Ursa Major

NGC5204 in Ursa Major

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