Collinder 26 - Melotte 15 : le cœur du Cœur (Francis Moreau)

Collinder 26 - Melotte 15 : le cœur du Cœur

Melotte 15 (Collinder 26) est un amas ouvert situé au coeur de la nébuleuse du Coeur (IC 1805) dans la constellation de Cassiopée.

Dans la région centrale de la nébuleuse IC 1805 les nuages de poussière adoptent des formes fantastiques. Ces formes sont en réalité sculptées par les vents stellaires et le rayonnement énergétique d'étoiles chaudes et massives faisant partie d'un amas récemment constitué (Melotte 15). S'étant formées il n'y a pas plus de 1,5 million d'années, les étoiles de l'amas (dans le tiers supérieur droit de cette image) avec de sombres nuages de poussières se découpant en silhouette sur fond de gaz lumineux. Cette image couvre un champ d'environ 30 années-lumière.

Le catalogue Melotte est un catalogue de 245 amas d'étoiles établi par l'astronome britannique Philibert Jacques Melotte. Il fut publié en 1915.
Le catalogue Collinder est un catalogue d'amas ouverts compilé par l'astronome suédois Per Collinder. Il fut publié en 1931.

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Melotte 15 (Collinder 26) is an open cluster located in the heart of the Heart Nebula (IC 1805) in the constellation Cassiopeia.

In the central region of the IC 1805 nebula the dust clouds take on fantastic shapes. These shapes are actually sculpted by the stellar winds and energetic radiation from hot, massive stars in a recently formed cluster (Melotte 15). Having formed no more than 1.5 million years ago, the cluster's stars (in the upper right-hand third of this image) with dark clouds of dust are silhouetted against a background of bright gas. This image covers a field of about 30 light years.

The Melotte catalogue is a catalogue of 245 star clusters compiled by the British astronomer Philibert Jacques Melotte. It was published in 1915.
The Collinder catalogue is a catalogue of open clusters compiled by the Swedish astronomer Per Collinder. It was published in 1931.

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Status	Advanced success
Started	...
Astrometry.net job	6331307
PixInsight job	PULQ5FLVKRL1L30YA23L752LG9379WH5
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	02h34m39s.689
RA (top/left)	02h38m11s.697
RA (top/right)	02h31m11s.174
RA (bottom/right)	02h31m11s.341
RA (bottom/left)	02h38m04s.500

Dec (center)	+61°21′43″.96
Dec (top/left)	+61°38′00″.32
Dec (top/right)	+61°38′37″.69
Dec (bottom/right)	+61°05′07″.52
Dec (bottom/left)	+61°04′30″.53

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