Amas des Pléiades (M45) (Serge Golovanow)

Amas des Pléiades (M45)

L'amas des Pléiades est un amas d'étoiles de la constellation du Taureau. Composé d'environs 1400 étoiles, il nous est distant de 440 années lumière.

Ce groupe d'étoiles a une histoire qui a traversé les temps : il est représenté sur un disque datant de l'âge de bronze, est cité dans la Bible ou dans l'Odyssée d'Homère. Dans la mythologie grecque, les Pléiades sont sept sœurs, filles d'Atlas et de Pléioné ; les neuf étoiles les plus brillantes tirent leurs noms des sœurs et leur parents.

La nébuleuse est un nuage de poussière proche des étoiles, qui reflechit la lumière de celles-ci. Elle a été découverte progressivement de 1859 à 1888 grâce à la photographie. Elle n'est pas un reste du nuage de poussière originel qui a donné naissance aux Pléiades. En effet, les deux objets n'ont pas la même vitesse apparente, l'amas aurait donc croisé ce nuage sur son chemin.

1heure (20x3min) de pose, ISO800, EOS 40D sur une TMB80 (384mm f/4.8), à l'observatoire du CALA ; traitements avec DeepSkyStacker (7 darks, 5 flats) et Photoshop.

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Free for non-commercial use, please notify me of every use !

Libre pour une utilisation non commerciale, merci de me notifier de son utilisation

Please note: The following tables are updated every 24 hours.

Distribution of astrophotographers

This table shows the number of distinct astrophotographers who have been assigned and IOTD/TP award compared to the total number of images awarded.
	Distinct awarded users	Total awarded images
Image of the day
Top picks
Top pick nominations

Distribution of subject types

This table shows the distribution of awards per subject type, compared to the popularity of images of that subject type.
	Image of the day	Top pick	Top pick nominations	Total submitted
Deep sky
Solar system
Extremely wide field
Star trails
Northern lights
Noctilucent clouds
Landscape

Distribution of data sources

This table shows the distribution of awards per data source, compared to the popularity of images acquired from that data source.
	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
Traveller
Own remote observatory
Amateur hosting facility
Public amaeteur data
Professional, scientific grade data
Mix of multiple sources
Other
Unknown

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.

Submitted The date and time when you submitted this image for IOTD/TP consideration.	...
Views by Submitters (available since September 19th, 2023) Every image is assigned to 50% of available Submitters. In the event that at least 80% of them don't view the image before its time in the IOTD/TP process expires, it's assigned to the other 50% of Submitters and the process begins anew.
Promotions by Submitters When 3 distinct Submitters promote the image, it moves on to the next stage of the process: evaluation for Top Pick status. This requirement, in addition to anonymization of images and distribution to only a subset of them, prevents biases and ensures that the best images are selected.
Promotions by Reviewers When 3 distinct Reviewers promote the image, it moves on to the next stage of the process: evaluation for IOTD status.
Early dismissal Staff members have a lot of images to inspect on a daily basis, and they can dismiss images if they believe they don't meet the requirements for IOTD/TP selection. If an image is dismissed 5 times, it's removed from the process. This streamlines the process and ensures that any bias present in promotions could be overruled by other staff members.

Status	n/a
Started	n/a
Astrometry.net job	n/a
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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Contribution Index (beta):