Pickering's Triangle (Chris Plonski)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: HD198330 · HD335010 · HD335118 · HD335119 · HD335123 · HD335124 · HD335125 · HD335126 · HD335127 · HD335130 · HD335211 · HD335214 · LDN 868 · NGC 6974 · NGC 6979

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Pickering's Triangle

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Pickering's Triangle

Pickering's Triangle is a part of the much larger Veil Nebula which in all spans about 3 degree in diameter, much larger than this field of view is able to display. It is the equivalent of 3 times the apparent diameter of the Moon. This is a supernova remnant from a massive explosion that occurred 10 to 20 thousand years ago. The exploding star was roughly 20 times the mass of the Sun. The teal filaments are ionized oxygen gas, while the red are ionized hydrogen and sulfur gases. The undulating filaments average about 4 billion miles thick, or roughly the distance from Earth to Pluto. The Veil Nebula lies about 2400 light years away.

Photographed from Taxahaw, SC using R, G, B, Ha and OIII filters on a ZWO ASI1600 monochrome camera using an Explore Scientific 127mm APO refractor with an EFL of 523mm.

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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
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Star trails
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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
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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	3863669
PixInsight job	2Z2R7JO46A1SAIATKU0KRTOHVENL55QS
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	20h48m36s.65
RA (top/left)	20h50m12s.85
RA (top/right)	20h51m54s.23
RA (bottom/right)	20h46m59s.60
RA (bottom/left)	20h45m21s.16

Dec (center)	+31°30′24″.3
Dec (top/left)	+30°40′11″.3
Dec (top/right)	+32°04′40″.9
Dec (bottom/right)	+32°20′29″.5
Dec (bottom/left)	+30°55′45″.6

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Pickering's Triangle

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