Sh2 163 165 166 (Jerry Yesavage)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: HD221438 · HD221639 · HD221670 · HD221671 · HD221935 · HD240317 · HD240335 · HD240344 · HD240346 · HD240348 · LBN 557 · LBN 566 · LDN 1238 · LDN 1245 · Sh2-163 · Sh2-164 · Sh2-166

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Sh2 163 165 166

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Sh2 163 165 166

Another group of Sharpless2 objects that can be put together over the large CMOS chip.

Stretching optimized with GHS:

GHS Forum Discussion

A lot of detail in the 25h exposure in Prior Versions:

Sh2 163 HA RGB

Sh2 165 H-Alpha

Sh2 166 H-alpha and RGB

From GalaxyMap:

According to Avedisova, this nebula is ionised by the O 9.5 V class star LSI +60 8. It contains the infrared cluster [url=http://simbad.u-strasbg.fr/simbad/sim-id?Ident=[BDS2003]+45&NbIdent=1&Radius=2&Radius.unit=arcmin&submit=submit+id][BDS2003] 45[/url].

Russeil combines Sh 2-163, Sh-164 and Sh 2-166 into a single star formation region.

GENERAL NOTE ON SHARPLESS2 OBJECTS>>>>>>>>>>>>>

There are 313 Sh2 objects. All now imaged.

This is my collection:

Sharpless2

Wide-Angle Hydrogen Alpha Nikon Image Sh2 79-171

Please note there is also a Sharpless2 Group with now more than 2700 examples.

Sharpless2 Group

Other useful links include:

Gary Imm's Collection

GalaxyMap's Collection

The Sharpless Catalog

The MDW H-alpha Sky Survey

Reiner Vogel's detailed observing catalog

Hope you enjoy these obscure but interesting objects...

Narrowband imaging
Suburban Astrophotography
PixInsight Addicts
Sharpless2 Objects
Light Polluted skies
ASI 6200 MM Pro
The refractors!
Cloudy Nights
Rarely Imaged Small DSOs
GHS Made a Substantial Difference
"Simply Stellarvue"

Sharpless2 Objects

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	6371096
PixInsight job	Y9TU401H7DMPTR2CA3L8307GXBF3BJQY
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	23h37m15s.598
RA (top/left)	23h28m48s.186
RA (top/right)	23h45m34s.260
RA (bottom/right)	23h46m04s.531
RA (bottom/left)	23h28m33s.742

Dec (center)	+60°28′02″.39
Dec (top/left)	+59°45′26″.99
Dec (top/right)	+59°43′53″.37
Dec (bottom/right)	+61°08′29″.12
Dec (bottom/left)	+61°10′02″.24

Image Index:

Contribution Index (beta):

Sh2 163 165 166

Sh2 163 165 166

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Image Index:

Contribution Index (beta):

Sh2 163 165 166

Sh2 163 165 166

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