Messier 103 (Indy Backyard Astro)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: HD236783 · HD9311 · HD9365 · M 103 · NGC 581

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Messier 103

Link: https://tomsbackyardastro.com/messier-103/

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Messier 103

Link: https://tomsbackyardastro.com/messier-103/

Located in the constellation Cassiopeia, Messier 103 (M103) is a mesmerizing open star cluster that graces our night sky with its celestial beauty. Discovered by French astronomer Pierre Méchain in 1781 and later cataloged by Charles Messier, this stellar gem is a captivating sight for stargazers and amateur astronomers.M103 is positioned approximately 8,000 light-years away from Earth, making it a distant but accessible object in the night sky. What sets this cluster apart is its distinct arrangement of stars. It consists of about 40 to 50 individual stars, and its most prominent members form a delicate triangular pattern. These stars are relatively young, with an estimated age of around 25 million years. Their youth is evident in their blue-white brilliance and their tight grouping within the cluster.

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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
Artificial satellite

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	...
PixInsight job	F9LZCXTO0SH2EHB5RTK89TVQI5MW7NMX
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	01h33m19s.184
RA (top/left)	01h31m07s.530
RA (top/right)	01h33m24s.915
RA (bottom/right)	01h35m30s.717
RA (bottom/left)	01h33m13s.404

Dec (center)	+60°38′03″.12
Dec (top/left)	+60°41′51″.60
Dec (top/right)	+60°21′27″.49
Dec (bottom/right)	+60°34′05″.34
Dec (bottom/left)	+60°54′39″.38

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Messier 103

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