M45: The Pleiades (Claustonberry)

Celestial hemisphere: Northern · Constellation: Taurus (Tau) · Contains: Maia nebula · NGC 1432 · 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: The Pleiades

Link: http://claustonberryobservatory.com/open-clusters/m45ed127/

Messier Object 45, known as the Pleiades, is an open cluster in the constellation of Taurus. At around 440 light years from Earth, it is one of the nearest open clusters to us. The cluster is comprised of very hot B type stars, which are very luminous and very blue. It is one of the few open clusters that is very visible to the naked eye, though the associated nebulousity is difficult to make out in all but the darkest skies.

One of the most famous clusters, the Pleiades dominate winter skies in the Northern hemisphere, and have been part of lore and legend in many cultures around the world. Alternate names that many are familiar with include the Seven Sisters, Subaru, or Naheed.

Claustonberry Observatory has imaged the Pleiades several times, but this marks the first image with the 127 Apochromatic Triplet and CCD camera. It is a much tighter view of part of the cluster, vs. previous images with ED80 showing a wider field.

Image & Equipment Details:

Date: 12/4/15

RGB Image, 270 minutes total light integration

R: 9X600s Bin 1X1

G: 9X600s Bin 1X1

B: 9X600s Bin 1X1

Calibrated with bias, flat, and dark frames

Processed in PixInsight

Temp: -30C

Imaging Scope: Explore Scientific 127CF Apochromatic Triplet

Imaging Camera: SBIG STF-8300M

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	Basic success
Started	...
Astrometry.net job	872976
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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