Les Hyades et la nébuleuse de Hind (Corine Yahia (RIGEL33))

Celestial hemisphere: Northern · Constellation: Taurus (Tau) · Contains: Part of the constellation Taurus (Tau) · The star 71Tau · The star Aldebaran (αTau) · The star γTau · The star δ1Tau · The star δ3Tau · The star εTau · The star θ1Tau · The star θ2Tau · The star πTau · The star ρTau

Les Hyades et la nébuleuse de Hind, Corine Yahia (RIGEL33)

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Les Hyades et la nébuleuse de Hind

Link to TIFF/FITS: https://flic.kr/p/2k1a1Lw

Powered byPixInsight

Les Hyades et la nébuleuse de Hind

Link to TIFF/FITS: https://flic.kr/p/2k1a1Lw

Lors de la rencontre annuelle d’AG33 réservée aux adhérents, nous avons pu bénéficier de deux nuits correctes lors de cette semaine de nouvelle Lune du mois d’octobre : celles du jeudi et du samedi.

Nous étions loin de la pollution lumineuse des grandes villes, sous le ciel du triangle noir de l’Aquitaine.

Avec mon setup « grand champs », j’ai visé les Hyades qui forment l'amas ouvert le plus proche de nous à une distance de 151 années-lumière. Il est constitué de 300 à 400 étoiles partageant des caractéristiques communes telles que l'âge et la composition chimique. Les quatre membres les plus brillants de l'amas sont toutes des géantes rouges qui ont commencé leur vie sur la séquence principale en tant qu'étoiles de classe spectrale A. Elles forment un astérisme en forme de « V » représentant la tête de la constellation du Taureau et couvrant quatre degrés (l’équivalent de 8 pleines Lunes).

Aldébaran, l'étoile la plus brillante du Taureau (en bas de l’image), fait partie de cet astérisme, il représente l'œil du Taureau mais ne fait pas partie de l'amas. Aldébaran est en effet situé deux fois plus près de nous que l'amas.

L'amas tire son nom des Hyades de la mythologie grecque, les nymphes de la pluie. Selon le mythe le plus répandu, elles furent les nourrices de Dionysos. Zeus les transporta au Ciel pour les remercier de leur dévouement à protéger son fils de la jalousie de son épouse Héra.

Photos prises le 15 octobre 2020 à Allons (47) – Canon 350D défiltré partiel avec objectif 70-300, focale à 133 mm, ouvert à f/4.5 sur monture StarAdventurer (sans goto ni autoguidage).

57 poses de 2 minutes – ISO 800 – 23 DOF – Iris et Toshop.

Sky-Watcher Star Adventurer
AAA : Astronomes et Astrographes Amateurs

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Astrometry.net job	3968279
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Les Hyades et la nébuleuse de Hind

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