Sh2-157 (Roy Salisbury)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: Bubble Nebula · HD218997 · HD219286 · HD219287 · HD219460 · HD219854 · HD220016 · HD220057 · HD220102 · HD220167 · HD220369 · HD240233 · HD240244 · HD240245 · HD240248 · HD240250 · HD240252 · HD240253 · HD240256 · HD240264 · HD240267 · LBN 533 · LBN 536 · LBN 537 · LBN 540 · LBN 542 · LBN 543 · LBN 544 · LBN 548 · LBN 549 · And 9 more.

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Sh2-157

Link to TIFF/FITS: https://drive.google.com/drive/folders/1zlGlp1yucqJUOMlUKS5DvOra4TarwYiX?usp=share_link

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Sh2-157

Link to TIFF/FITS: https://drive.google.com/drive/folders/1zlGlp1yucqJUOMlUKS5DvOra4TarwYiX?usp=share_link

SH2-157, also known as the Lobster Claw Nebula, is an emission nebula located about 11,000 light-years away in the constellation of Cassiopeia. The red/orange portions of the nebula are made up of strong HII regions predominantly yellow part of the nebula is a very large H II region.

NOTE: Originally I took this data (RGB) so that I could use just the stars inn my NB (SHO) image. But there are just too many stars and it was just too much for the NB image.

This could definatly be processed better since there is a LOT of raw data. I just quickly put this together.

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	6504805
PixInsight job	AJTD17GR2JXX89QOIDXIVSF1R9B4IIMQ
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	23h16m17s.583
RA (top/left)	23h09m40s.945
RA (top/right)	23h10m09s.193
RA (bottom/right)	23h22m26s.497
RA (bottom/left)	23h22m54s.298

Dec (center)	+60°30′03″.90
Dec (top/left)	+61°40′02″.58
Dec (top/right)	+59°18′56″.37
Dec (bottom/right)	+59°18′57″.56
Dec (bottom/left)	+61°40′00″.70

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Sh2-157

Sh2-157

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Image Index:

Contribution Index (beta):

Sh2-157

Sh2-157

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Acquisition details

Description

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Sky plot

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