The Guest Star - M1 (Bogdan Borz)

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

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The Guest Star - M1

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The Guest Star - M1

The Crab Nebula was first observed by Chinese astronomes on the 4th of July 1054, during the Song dynasty. They called these novae, that were bright transitory phenomena, "guest stars". Its spectacular brightness lasted around a year. Today it is also named SN1054, supernova remnant 1054 and it has a pulsar at its center.

It is surprising, but European astronomers did not report the apparition. They had a hard time observing this object and even Messier confused it the Halley comet. That's what motivated him in starting a catalogue of non-cometary objects. The Crab nebula is therefore M1, the first object of his catalogue.

A lot of work was involved in producing this image, clouds, bad weather and seeing did not cooperate. It is my longest project so far.

Dates: December 2021 12, 14, 16, 22. January 2022 12, 14, 16, 20, 21, 23, 24, 25, 26

Ha : 23 x 300s; 196 x 180s -11.72 hours
OIII : 35 x 300s; 185 x 180s - 12.2 hours
SII : 37 x 300s; 189 x 180s - 12.5 hours
RGB : 21, 24, 25 x 60s - 1.16 hours

Total exposure: 37.6 hours

SHO composition with RGB stars, Bortle 7/8

Astrophotographes (France)
Narrowband imaging
PixInsight Addicts
AstroBin Platform open discussions community forum
AAA : Astronomes et Astrographes Amateurs
Light Polluted skies

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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.
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Status	Advanced success
Started	...
Astrometry.net job	5510617
PixInsight job	U9NHOPDBGD2B8GKSXCRW99GGQE7DZ12Q
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	05h34m30s.340
RA (top/left)	05h35m20s.220
RA (top/right)	05h35m00s.213
RA (bottom/right)	05h33m40s.670
RA (bottom/left)	05h34m00s.583

Dec (center)	+22°01′28″.96
Dec (top/left)	+21°51′17″.57
Dec (top/right)	+22°15′13″.53
Dec (bottom/right)	+22°11′38″.53
Dec (bottom/left)	+21°47′44″.76

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