Messier 45 - an open cluster in the constellation Taurus (Bill)

Celestial hemisphere: Northern · Constellation: Taurus (Tau) · Contains: IC 353 · IC 359 · IC 360 · Maia nebula · Merope nebula · NGC 1432 · NGC 1435 · The star 37Tau · The star 41Tau · The star Atlas (27Tau) · The star Electra (17Tau) · The star Merope (23Tau) · The star Pleione (28Tau) · The star Taygeta (19Tau) · The star ηTau · The star τ1Ari · The star τ2Ari

Messier 45 - an open cluster in the constellation Taurus, Bill

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Messier 45 - an open cluster in the constellation Taurus

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Messier 45 - an open cluster in the constellation Taurus

The Pleiades, or Seven Sisters (Messier 45), is an open star cluster located in the constellation of Taurus. The cluster is dominated by hot blue and extremely luminous stars that have formed within the last 100 million years. Faint reflection nebulosity surrounds the brightest stars as the cluster passes through a dust cloud. It is among the nearest star clusters to Earth and is the cluster most obvious to the naked eye in the night sky. The celestial entity has several meanings in different cultures and traditions.

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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
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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
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Amateur hosting facility
Public amaeteur data
Professional, scientific grade data
Mix of multiple sources
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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	Basic success
Started	...
Astrometry.net job	816664
PixInsight job	n/a
PixInsight queue size	n/a
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Messier 45 - an open cluster in the constellation Taurus

Messier 45 - an open cluster in the constellation Taurus

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Image Index:

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Messier 45 - an open cluster in the constellation Taurus

Messier 45 - an open cluster in the constellation Taurus

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