IC443 - The Jellyfish Nebula (KTAZ)

Celestial hemisphere: Northern · Constellation: Orion (Ori) · Contains: 68 Ori · 7 Gem) · B227 · Gem A · IC 2159 · IC 443 · IC 444 · LBN 843 · LBN 854 · NGC 2174 · NGC 2175 · Praepes (η Gem · Sh2-247 · Sh2-252 · Tejat Prior · The star 12 Gem · The star 9 Gem · The star Propus

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IC443 - The Jellyfish Nebula

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IC443 - The Jellyfish Nebula

The Jellyfish Nebula is a galactic supernova remnant (SNR) in the constellation Gemini. Its distance is roughly 5,000 light years from Earth.

IC 443 may be the remains of a supernova that occurred 3,000 - 30,000 years ago. IC 443 is one of the best-studied cases of supernova remnants interacting with surrounding molecular clouds.

When a massive star runs out of thermonuclear fuel, it implodes, forming a dense stellar core called a neutron star. The outer layers of the star collapse toward the neutron star then bounce outward in a supernova explosion. A spinning neutron star that produces a beam of radiation is called a pulsar. The radiation sweeps by like a beacon of light from a lighthouse and can be detected as pulses of radio waves and other types of radiation.

Shot from my backyard over 8 nights in February 2023.

Original
Final
B

B

Description: Second pass...I wanted to soften it a bit and try to make the colors look more natural.

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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	7175911
PixInsight job	TMFIFAJYIKRUQNPWPZTXUCJUO3JY1G39
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	06h09m40s.20
RA (top/left)	06h14m36s.91
RA (top/right)	06h11m44s.89
RA (bottom/right)	06h04m39s.51
RA (bottom/left)	06h07m37s.82

Dec (center)	+20°30′12″.5
Dec (top/left)	+19°29′09″.8
Dec (top/right)	+21°58′10″.6
Dec (bottom/right)	+21°30′42″.6
Dec (bottom/left)	+19°02′06″.7

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Contribution Index (beta):

IC443 - The Jellyfish Nebula

IC443 - The Jellyfish Nebula

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Image Index:

Contribution Index (beta):

IC443 - The Jellyfish Nebula

IC443 - The Jellyfish Nebula

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Description

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Sky plot

Histogram

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