Messier 106 (Camille COLOMB)

Celestial hemisphere: Northern · Constellation: Canes Venatici (CVn) · Contains: M 106 · NGC 4217 · NGC 4226 · NGC 4231 · NGC 4232 · NGC 4248 · NGC 4258

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Messier 106

Link: https://www.kmille-astrophoto.com

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Messier 106

Link: https://www.kmille-astrophoto.com

Toujours en test de mon nouveau tube, et je rencontre quelque soucis de Collimation, flexion, donc autant dire que je ne suis pas encore satisfait de la tete de mes etoiles!

Je suis peut etre un peut tatilon, mais bon j'ai encore du boulot, et je suis sur que je peut faire mieux!

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M106 (ou NGC 4258) est une galaxie spirale située dans la constellation des Chiens de chasse. Elle a été découverte par Pierre Méchain en 1781. Celui-ci n'eut pas l'occasion de l'inclure lui-même dans le catalogue Messier, bien qu'il en ait probablement eu l'intention, et c'est Helen Sawyer Hogg qui l'introduisit dans la version moderne du catalogue en 1947, en même temps que M105 et M107.

M106 est située à une distance de 21 à 25 millions d'années-lumière du système solaire, et possède un diamètre de 30 000 années-lumière environ. Elle s'éloigne du système solaire à la vitesse de 537 km/s. Elle est classée de type Sbp sur la séquence de Hubble, les bras spiraux étant bien visibles sur les images, délimités notamment par des régions d'intense activité de formation stellaire, où l'on peut apercevoir de nombreuses étoiles bleues, très jeunes et très chaudes, et des nuages de gaz ionisé, ou régions HII, de couleur rouge.

M106 est connue pour rayonner très fortement dans le domaine des ondes radio, et est à ce titre classée comme galaxie de Seyfert de type 1,9.

AAA : Astronomes et Astrographes Amateurs
Astrophotographes (France)

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The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

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