M31 LRGB-Ha (Nicolas Puig)

Celestial hemisphere: Northern · Constellation: Andromeda (And) · Contains: Andromeda Galaxy · M 110 · M 31 · M 32 · NGC 205 · NGC 221 · NGC 224

M31 LRGB-Ha

M31 est une magnifique galaxie spirale située à environ 2,55 millions d'années-lumière du Soleil, dans la constellation d'Andromède. Avec une magnitude visuelle de 3,4 la galaxie d'Andromède est l’une des rares galaxies observables à l'œil nu depuis la Terre dans l’hémisphère nord. C’est également l'un des objets les plus étendus de la voûte céleste, avec un diamètre apparent de 3,18°, soit plus de six fois le diamètre apparent de la Lune, observée depuis la Terre.

Cette galaxie est accompagnée de M31 et M110 en tant que satellite et font parties du groupe local qui englobe une soixantaine de galaxies dont la voie lactée.
D'un diamètre d'environ 220 000 années-lumière, elle contiendrait environ mille milliards d'étoiles, deux à cinq fois plus que notre galaxie.

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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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