M41 - 2017 (Gary Imm)

Celestial hemisphere: Southern · Constellation: Canis Major (CMa) · Contains: 12 CMa · M 41 · NGC 2287

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M41 - 2017

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M41 - 2017

M41 is an open cluster located 2200 light years away in the constellation of Canis Major at a declination of -21 degrees. It is a magnitude 4.5 cluster which spans 40 arc-minutes in our apparent view. This corresponds to a diameter of 25 light years.

This bright open star cluster is one of my favorites. The cluster contains over 100 stars, a perfectly spaced mix of hot blue stars and big red giants. I don't see much of a Beehive shape here, but that is my experience for many of these cluster namesakes. The most interesting aspect of it to me is the apparent meandering line of stars which extends from the bottom left corner of the image all the way to the upper right corner. About one-third of the way up along this line is an interesting and beautiful orange/blue star pair.

The refractors!
Cloudy Nights
Open Star Clusters

Messier Catalog (Complete)
Open Clusters

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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
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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
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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
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Amateur hosting facility
Public amaeteur data
Professional, scientific grade data
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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	1746606
PixInsight job	NT4UW9L5T6M9V14FMGNGWQM1JGG4LCY7
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	06h46m09s.984
RA (top/left)	06h45m00s.609
RA (top/right)	06h44m46s.716
RA (bottom/right)	06h47m19s.887
RA (bottom/left)	06h47m32s.686

Dec (center)	-20°44′59″.99
Dec (top/left)	-20°12′21″.77
Dec (top/right)	-21°15′46″.51
Dec (bottom/right)	-21°17′35″.95
Dec (bottom/left)	-20°14′10″.52

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M41 - 2017

M41 - 2017

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M41 - 2017

M41 - 2017

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