Sh2-224 (Kirby Collins)

Celestial hemisphere: Northern · Constellation: Auriga (Aur) · Contains: HD278106 · HD278107 · HD278109 · HD278110 · HD278111 · HD278112 · HD278113 · HD278116 · HD278117 · HD278119 · HD278120 · HD278121 · HD278122 · HD278123 · HD278124 · HD278125 · HD278126 · HD278127 · HD278188 · HD278189 · HD278190 · HD278195 · HD278196 · HD278197 · HD35544 · LBN 769 · Sh2-224

Powered byPixInsight

Sh2-224

Powered byPixInsight

Sh2-224

Sh2-224 is a faint supernova remnant in the constellation Auriga, and is one of 313 H II emission regions cataloged by the astronomer Stewart Sharpless in 1959. Sh2-224 exhibits not only hydrogen emissions (rendered here in its natural red color), but also has a bit of ionized oxygen (the blue-green arcs). It is unusual for a supernova remnant...in addition to a more or less spherical shell, it has an additional wing or hat-like structure on one side. Astronomers thought that this may have been the result of the expanding spherical shock wave hitting a boundary in the surrounding gas, and expanding into a region of much lower density, but recent observations haven't found evidence of this sort of structure in the interstellar medium. More recent studies proposed that the progenitor (exploding) star was moving at a very high velocity, and the odd structure was a result of interaction with the star's own bow shock.

Interesting paper: https://ui.adsabs.harvard.edu/abs/2019arXiv190908947C/abstract

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

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	6884441
PixInsight job	5G1P6Z4GLDQFUL09DRRM4IB53I541W6V
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	05h26m53s.79
RA (top/left)	05h23m56s.75
RA (top/right)	05h24m23s.44
RA (bottom/right)	05h29m47s.30
RA (bottom/left)	05h29m27s.92

Dec (center)	+42°59′10″.0
Dec (top/left)	+43°40′07″.5
Dec (top/right)	+42°14′54″.4
Dec (bottom/right)	+42°17′48″.3
Dec (bottom/left)	+43°43′08″.6

Image Index:

Contribution Index (beta):

Sh2-224

Sh2-224

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

		...
You have no new notifications.

Image Index:

Contribution Index (beta):

Sh2-224

Sh2-224

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

Notifications

AstroBin is in READ ONLY mode

Sorry :-(

Sorry :-(

Sorry :-(

Are you really sure?

Warning!

Warning!

Are you sure?

Report abuse

Slideshow settings

IOTD/TP stats (last [x] days)

Distribution of astrophotographers

Distribution of subject types

Distribution of data sources

Sorry

Sorry

Share

Upload new revision

Upload uncompressed source (XISF/FITS/PSD/TIFF)

Delete image and all its revisions?

Delete original image?

Delete all other versions?

Delete all revisions?

IOTD/TP stats

The following people like this image

The following people bookmarked this image

Warning

Flag malfunctioning thumbnails

Contains

Remove yourself as a collaborator

Plate-solving information