À la frontière entre Cassiopée et Persée (Corine Yahia (RIGEL33))

Celestial hemisphere: Northern · Constellation: Perseus (Per) · Contains: 7 Per) · NGC 869 · NGC 884 · The star 8 Per · The star Misam al Thurayya I (χ Per · chi Persei Cluster · h Persei Cluster

À la frontière entre Cassiopée et Persée, Corine Yahia (RIGEL33)

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À la frontière entre Cassiopée et Persée

Link: https://flic.kr/p/2op2hDw

Powered byPixInsight

À la frontière entre Cassiopée et Persée

Link: https://flic.kr/p/2op2hDw

Visible à l’œil nu sous la forme d’une tache floue dans le prolongement d’une des branches du W formé par Cassiopée, en direction de Persée, cet objet est connu des astronomes amateurs sous le nom de « Double Amas de Persée ».
Les deux amas regroupent chacun des centaines d’étoiles et se sont formés au sein d’un même nuage de gaz interstellaire. Leur âge est estimé autour de 10 millions d’années mais n’est pas connus avec précision. La plupart des étoiles ont un éclat légèrement bleuté (ce qui signifie qu’elles sont très chaudes) et sont classées supergéantes, c’est-à-dire qu’elles sont des dizaines de fois plus massives et des dizaines de milliers de fois plus lumineuses que le Soleil.

Dans l’image annotée, on peut voir que cette nébuleuse pouponnière d’étoiles est composée de plusieurs petites nébuleuses à émission et amas d’étoiles ouverts. On peut aussi noter la présence de l’étoile variable pulsante SKF 1303.

Photos prises le 21 mars 2023 à Allons (47) – Canon 7D défiltré partiel au foyer d’une lunette Skywalker 100/900 sur monture Orion Sirius EQ-G (sans goto ni autoguidage).
63 poses de 60 s – ISO 3200 – 25 DOF – Siril et Toshop.

Women Astrophotographers
AAA : Astronomes et Astrographes Amateurs
Astrophotographes (France)
Camera Lens Astrophotography

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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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Status	Basic success
Started	...
Astrometry.net job	7402386
PixInsight job	n/a
PixInsight queue size	n/a
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À la frontière entre Cassiopée et Persée

À la frontière entre Cassiopée et Persée

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À la frontière entre Cassiopée et Persée

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