M45 - Pleiades (Mark Spruce)

Celestial hemisphere: Northern · Constellation: Taurus (Tau) · Contains: 16 Tau · 17 Tau · 19 q Tau · 20 Tau · 21 Tau · 22 Tau · 23 Tau · 24 Tau · 25 eta Tau · Alcyone · Asterope · Celaeno · Electra · IC 349 · M 45 · Maia · Maia nebula · Merope · Merope nebula · NGC 1432 · NGC 1435 · Pleiades · Sterope II · Taygeta · The star Celaeno (16Tau) · The star Electra (17Tau) · The star Merope (23Tau) · The star Sterope I (21Tau) · The star Taygeta (19Tau) · The star ηTau

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M45 - Pleiades

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M45 - Pleiades

Messier 45 - Pleiades or Severn Sisters (Taken over 2 nights)

M45 is a naked eye visible open star cluster and can be easily seen even from heavily light polluted locations. M45 is easy found located in the constellation of Taurus (not far from Orion). I have always felt that the shape of the cluster was a little like Ursa Major (The Great Bear). Before I became interested in astronomy and knew better I always thought that it was Ursa Minor (the Little Bear). I now know otherwise, so I now think of it as Baby Bear, Ursa infans if you like, to complete the family. Wonder how they like their porridge :-)

If you look at this for some time with the naked eye you will see that is appears to be fuzzy and different to any other star clusters. This is due to the nebulosity that surrounds it.

The cluster is dominated by hot blue and extremely luminous young stars that have formed within the last 100 million years. The dust that forms the nebulosity around the stars was originally believed to be left from the formation of the cluster. However it is now now known to be an unrelated dust cloud in the interstellar medium, through which the stars are currently passing.

Messier Catalogue
Nebulae
Open and Globular Clusters

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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.
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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	Advanced success
Started	...
Astrometry.net job	3260626
PixInsight job	YAPWDMIS824LWH1AOWC8JQVC67M7RIR0
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	03h46m12s.14
RA (top/left)	03h44m48s.60
RA (top/right)	03h44m26s.42
RA (bottom/right)	03h47m35s.20
RA (bottom/left)	03h47m58s.58

Dec (center)	+24°10′47″.7
Dec (top/left)	+24°41′33″.3
Dec (top/right)	+23°43′53″.8
Dec (bottom/right)	+23°39′59″.5
Dec (bottom/left)	+24°37′37″.3

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M45 - Pleiades

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