M45 - PLEIADES STAR CLUSTER (Drew Evans)

Celestial hemisphere: Northern · Constellation: Taurus (Tau) · Contains: 16 Tau · 17 Tau · 18 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 · HD22992 · HD23156 · HD23157 · HD23194 · HD23246 · HD23289 · HD23325 · HD23326 · HD23351 · HD23361 · HD23375 · And 64 more.

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M45 - PLEIADES STAR CLUSTER

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M45 - PLEIADES STAR CLUSTER

M45 - The Pleiades Star Cluster

One of my favorite celestial sights, and easily seen as a small cloud-like cluster of stars high in the winter night sky. Fun fact: the Subaru (car company) emblem is this cluster of stars. "Subaru" is the Japanese word for Pleiades.

Those aren’t clouds in our atmosphere you are seeing, those are pitch black interstellar clouds of cold gas laced with dust and ash that are illuminated by the nearby stars. This is called reflection nebula. Zoom in for details.

Also known as the "Seven Sisters", M45 is an open star cluster containing middle-aged, hot B-type stars located in the constellation of Taurus. It is among the star clusters nearest Earth and is the cluster most obvious to the naked eye in the night sky, aligning to the east of Orion's famous belt.

Captured with 13.7 hours of mono data (LRGB) in Bortle Class 4 skies near downtown Flagstaff, Arizona.

OTA: William Optics GT81 using 0.8x Flat6A-81 reducer
Mount: Celestron CGX-L
Camera: ZWO ASI2600MM Pro
Gain: 100
Cooling Temperature: -10 degrees celsius

Filters:
R🔴 42 x 300s
G🟢 42 x 300s
B🔵 50 x 300s
L⚪ 15 x 600s
13.7 hours total integration

Auto-guiding: ZWO ASI174MM Mini and ZWO M48 OAG
Control: ZWO ASIAIR Pro

Calibrated in Astro Pixel Processor⁣ with darks and flats

Processed in Pixinsight and Lightroom

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
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Top picks
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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

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	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	5241465
PixInsight job	BNCO3MK8TG9IBYZQ0HRXK7W7ZGW1VADG
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	03h47m10s.13
RA (top/left)	03h42m41s.60
RA (top/right)	03h55m53s.53
RA (bottom/right)	03h51m46s.59
RA (bottom/left)	03h38m24s.72

Dec (center)	+24°07′40″.5
Dec (top/left)	+22°23′30″.4
Dec (top/right)	+23°46′59″.5
Dec (bottom/right)	+25°51′38″.8
Dec (bottom/left)	+24°26′38″.2

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M45 - PLEIADES STAR CLUSTER

M45 - PLEIADES STAR CLUSTER

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