Pickering's Triangle - 2019 (Gary Imm)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg)

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Pickering's Triangle - 2019

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Pickering's Triangle - 2019

This object is a beautiful supernova remnant located 1500 light years away in the constellation of Cygnus. Pickering's Triangle is the least known of the 3 main supernova remnants of the massive and beautiful Veil Nebula, also known as the Cygnus Loop. This field of view spans 1 degree, which is almost 30 light years at this distance.

This is one of my favorite objects to image. The image is 2 channel narrowband (H-O-O), with RGB stars substituted. The part I most like about this image is the sharply defined filaments of gas which flow across the colorful star background. I especially like the 2 nearly vertical, parallel lines of OIII near the center of the image. It is hard for me to imagine how those were generated.

This object was discovered by Williamina Fleming in 1904 while examining photographic plates at Harvard Observatory. The object is named after her boss, Dr. Edward Charles Pickering, the director of the observatory at that time. She had no formal advanced education and she initially worked as a maid in the home of Dr. Pickering after she and her child were abandoned by her husband. After a short time, Dr. Pickering's wife Lizzie convinced him that Williamina had the potential for achieving greater things, and he hired her to perform part-time administrative work at the observatory. She eventually went on to accomplish many achievements in astronomy, including the discovery of the Horsehead Nebula.

The refractors!
Cloudy Nights
ZWO ASI1600MM/QHY163M
Takahashi Refractors
Narrowband imaging

SNR

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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	2843232
PixInsight job	FKLNTL5GV3C21NY6MZNAHCCL5C82IJH8
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	20h48m22s.351
RA (top/left)	20h50m04s.600
RA (top/right)	20h50m10s.492
RA (bottom/right)	20h46m39s.489
RA (bottom/left)	20h46m35s.269

Dec (center)	+31°34′04″.30
Dec (top/left)	+31°03′46″.11
Dec (top/right)	+32°03′26″.33
Dec (bottom/right)	+32°04′17″.21
Dec (bottom/left)	+31°04′37″.42

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Pickering's Triangle - 2019

Pickering's Triangle - 2019

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Pickering's Triangle - 2019

Pickering's Triangle - 2019

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