Sh2-163 (Gary Imm)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: Sh2-163

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Sh2-163

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Sh2-163

This object is a rarely imaged emission nebula located 10,000 light years away in the constellation of Cassiopeia at a declination of +61 degrees. The nebula spans about 15 arc-minutes in our apparent view, which corresponds to a width of 45 light years.

Sometimes I am passionate about imaging certain objects and later I wonder why. This one barely showed up in my subs, and looked so washed out in the first Ha master that I went out and took another set. Probably not the best use of my clear sky time. This object looks like the poor cousin of the Seagull Nebula.

I like the shapes of the bright red emission clouds above the center of the image. The dark cloud at the top of the image is Dobashi 3530 and LDN 1245. Studies have identified numerous YSO (young stellar object) candidates embedded in the clouds of this emission region.

Texas Astronomy
Takahashi Refractors
Sharpless2 Objects
ZWO ASI183/QHY183
Unique or Unusal Deep Sky Targets
The refractors!
Cloudy Nights

HII-Dominated Nebulae
Sharpless Catalog (200/313)

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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
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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	3224367
PixInsight job	HII1MVTFJ5DETW8TE3FRFGIQWADMUQHM
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	23h33m25s.985
RA (top/left)	23h35m21s.237
RA (top/right)	23h31m35s.922
RA (bottom/right)	23h31m31s.990
RA (bottom/left)	23h35m14s.720

Dec (center)	+60°45′47″.50
Dec (top/left)	+60°55′56″.14
Dec (top/right)	+60°56′45″.59
Dec (bottom/right)	+60°35′32″.28
Dec (bottom/left)	+60°34′44″.17

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Sh2-163

Sh2-163

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Sh2-163

Sh2-163

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