NGC 7293 Helix Nebula (Chris Ashford)

Celestial hemisphere: Southern · Constellation: Aquarius (Aqr) · Contains: HD212980 · HD213056 · HD213069 · Helix Nebula · NGC 7293

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NGC 7293 Helix Nebula

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NGC 7293 Helix Nebula

Need more data on this target! Taken from my Bortle 7 backyard, even with NB filters the integrated masters had quite a lot of noise, and the SII channel was incredibly weak.

NGC7293, the Helix Nebula, is a planetary nebula in Aquarius, 655 light years away with a 2.87 light year radius. The remnant central stellar core of the planetary nebula is on its way to becoming a white dwarf. Stars lose up to 80% of their mass as they die, shedding gas which then becomes fluorescent, energized by the remains of the star. This is what we can observe, and their many colors indicate a wide range of elements in the ejected gas.

The Helix Nebula is also known as the "Eye of God" and the "Eye of Sauron" (my wife likes that one

Fun fact: a typical white dwarf contains the mass of a star condensed down to the size of the Earth. Its density is 12,500lbs per tablespoon, which is about the weight of an adult African elephant

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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
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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
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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	OBYLLI4CQ4B783ITZYPYNGF7EUFU6D89
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	22h29m39s.520
RA (top/left)	22h30m53s.720
RA (top/right)	22h27m32s.787
RA (bottom/right)	22h28m24s.592
RA (bottom/left)	22h31m45s.484

Dec (center)	-20°50′35″.39
Dec (top/left)	-20°24′36″.16
Dec (top/right)	-20°40′23″.50
Dec (bottom/right)	-21°16′34″.60
Dec (bottom/left)	-21°00′45″.10

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NGC 7293 Helix Nebula

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NGC 7293 Helix Nebula

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