Sh2-171 (Michael Siniscalchi)

Celestial hemisphere: Northern · Constellation: Cepheus (Cep) · Contains: LBN 580 · LBN 581 · LBN 582 · LBN 583 · LBN 584 · LBN 585 · LBN 586 · LBN 587 · LBN 588 · LBN 589 · LBN 590 · LDN 1260 · LDN 1263 · LDN 1264 · LDN 1266 · LDN 1267 · LDN 1268 · LDN 1269 · LDN 1270 · LDN 1271 · LDN 1273 · LDN 1275 · NGC 7762 · NGC 7822 · PK119+06.1 · PK120+09.1 · Sh2-171 · VdB2

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Sh2-171

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Sh2-171

SH2-171, also known as Sharpless 171, is an emission nebula located in the constellation of Cepheus. It is part of a larger star-forming complex that includes NGC 7822 and the young star cluster Berkeley 59. This nebula is approximately 3,000 light-years away from Earth and is characterized by its intricate structures, often referred to as “elephant trunks” or pillars. These formations are created by the stellar winds from hot stars within the nebula, which shape the surrounding gas and dust.

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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
Artificial satellite

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	...
PixInsight job	6RIODOAABK06F8OXGKCW0VZJMX9NIR77
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	00h01m14s.97
RA (top/left)	23h39m29s.19
RA (top/right)	23h47m58s.47
RA (bottom/right)	00h19m11s.79
RA (bottom/left)	00h17m52s.51

Dec (center)	+67°22′14″.5
Dec (top/left)	+69°36′45″.6
Dec (top/right)	+64°41′23″.7
Dec (bottom/right)	+64°58′40″.4
Dec (bottom/left)	+69°57′54″.9

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