Crab Nebula (M1 / NGC1952) (DoubleStarPhotography)

Celestial hemisphere: Northern · Constellation: Taurus (Tau) · Contains: Crab nebula · LBN 833 · M 1 · NGC 1952 · PGC 1660066 · Sh2-244

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Crab Nebula (M1 / NGC1952)

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Crab Nebula (M1 / NGC1952)

The famous Crab Nebula, Messier object 1 and NGC1952. The nebula was first thought to have been noticed in 1731 by John Bevis, and it was significant enough to be the first entry in Charles Messier's list of discovered nebulae.

The Crab Nebula was originally given it's name due to its resemblance to a crab's claw (not the full-body image of a crab), in an early sketch made in 1855 by Lord Rosse's staff astronomer R.J. Mitchell. As higher resolution images became available, this caricature has become far less compelling, but the name has stuck none the less.

M1 is the remnant of a supernova explosion in the year 1054 A.D., which was recorded in five separate accounts by Chinese astronomers at the time. It's interesting that that no western observation of this event appears to have survived, since it was certainly one of the most spectacular supernovae events in recorded histroy.

The red tendrils are excited gas, emitting strong H-alpha radiation. The nebula continues to expand and change the details of its appearance as tme goes on.

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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
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	9126927
PixInsight job	I8FQSZ3RFO17L08JOSYB5RUAEOW5UXXP
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	05h34m31s.352
RA (top/left)	05h35m30s.269
RA (top/right)	05h35m26s.608
RA (bottom/right)	05h33m32s.291
RA (bottom/left)	05h33m36s.410

Dec (center)	+22°00′58″.27
Dec (top/left)	+21°42′05″.59
Dec (top/right)	+22°20′24″.68
Dec (bottom/right)	+22°19′49″.23
Dec (bottom/left)	+21°41′29″.86

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Crab Nebula (M1 / NGC1952)

Crab Nebula (M1 / NGC1952)

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Crab Nebula (M1 / NGC1952)

Crab Nebula (M1 / NGC1952)

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