Jellyfish Nebula (jrtb)

Celestial hemisphere: Northern · Constellation: Gemini (Gem) · Contains: 12 Gem · 7 Gem) · 7 eta Gem · Gem A · HD254755 · HD43078 · HD43385 · HD43479 · HD43582 · HD43703 · HD43753 · HD43907 · IC 443 · IC 444 · LBN 840 · LBN 844 · LDN 1564 · Praepes (η Gem · Sh2-248 · Tejat Prior · The star 12 Gem · The star Propus

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Jellyfish Nebula

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Jellyfish Nebula

The Jellyfish Nebula!

You're looking at the expanding debris cloud of a supernova remnant. Light from the explosion first reached earth 30,000 years ago.

From: https://chandra.harvard.edu/xray_sources/supernovas.html

When the nuclear power source at the center of the red-giant star was exhausted, the core collapsed. In less than a second, a neutron star was formed. The formation of the neutron star released an enormous amount of energy in the form of neutrinos and heat, which reversed the implosion. All but the central neutron star was blown away at speeds in excess of 50 million kilometers per hour as a thermonuclear shock wave raced through the now expanding stellar debris, fusing lighter elements into heavier ones and producing a brilliant visual outburst.

The neutron star lurking inside the Jellyfish has been confirmed to exist and its track is visible via X-ray.

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	9MNCGWFZEPWTEGGFBMHLUJZ64ACEINC6
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	06h16m45s.37
RA (top/left)	06h20m34s.100
RA (top/right)	06h19m31s.23
RA (bottom/right)	06h12m53s.58
RA (bottom/left)	06h14m01s.66

Dec (center)	+22°31′16″.8
Dec (top/left)	+21°51′33″.7
Dec (top/right)	+23°25′32″.9
Dec (bottom/right)	+23°10′38″.4
Dec (bottom/left)	+21°36′50″.9

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Jellyfish Nebula

Jellyfish Nebula

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Jellyfish Nebula

Jellyfish Nebula

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