The Pleiades, also known as The Seven Sisters, Messier 45, M45 (derbenutzer)

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 · 26 Tau · 27 Tau · 28 Tau · Alcyone · Asterope · Atlas · Barnard's Merope Nebula · Celaeno · Electra · IC 349 · LBN 770 · LBN 771 · LBN 772 · M 45 · Maia · Maia Nebula · Merope · Merope Nebula · NGC 1432 · NGC 1435 · Pleiades · And 11 more.

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The Pleiades, also known as The Seven Sisters, Messier 45, M45

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The Pleiades, also known as The Seven Sisters, Messier 45, M45

The Pleiades are almost certainly the most photographed open cluster

About 440 light-years from us, this cluster is drifting straight through a region of slightly denser interstellar matter.

The young blue stars illuminate this, so we can observe the decorative details of a reflection nebula - kept in intense blue.

With longer exposure it is possible to additionally detect a complex network of bands and stripes. Some of these filaments appear broad, others look like thin threads. Not particularly bright, but it is part of a larger complex of molecular clouds.

This complex occupies a really huge part of this region of the sky. Among the better known objects in this area is probably the Taurus molecular cloud.

On longer exposed images - taken with distinctly short focal lengths - this (dark) cloud can be recognised quite clearly as a delineated area.

A very aesthetic sight.

The stacked and processed image is slightly cropped (4917 × 3335 pixels).
The size of the sensor of the ALccd-QHY 183c is 13.3 × 8.9mm with 5544 × 3694 pixels (=20 MPixel).
Calibration with 100 darks, dark flats, flats. Without bias.

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	Advanced success
Started	...
Astrometry.net job	5283920
PixInsight job	F9QGRWA4B6T7ZB9NNZAZN5BN3S1WFAH8
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	03h47m03s.40
RA (top/left)	03h50m14s.23
RA (top/right)	03h43m22s.12
RA (bottom/right)	03h43m53s.65
RA (bottom/left)	03h50m42s.43

Dec (center)	+24°12′05″.0
Dec (top/left)	+24°48′40″.5
Dec (top/right)	+24°38′38″.0
Dec (bottom/right)	+23°35′12″.8
Dec (bottom/left)	+23°45′10″.3

Image Index:

Contribution Index (beta):

The Pleiades, also known as The Seven Sisters, Messier 45, M45

The Pleiades, also known as The Seven Sisters, Messier 45, M45

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Image Index:

Contribution Index (beta):

The Pleiades, also known as The Seven Sisters, Messier 45, M45

The Pleiades, also known as The Seven Sisters, Messier 45, M45

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