Dragon's Egg NGC 6164 (Daniel Stern)

Celestial hemisphere: Southern · Constellation: Norma (Nor) · Contains: HD148937 · HD149098 · NGC 6164 · NGC 6165

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Dragon's Egg NGC 6164

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Dragon's Egg NGC 6164

NGC 6164 gets in name, in part, from its close proximity to the nebula The Fighting Dragons of Ara, NGC 6188. The Dragons Egg is a bipolar emission nebula. The term bipolar refers to the symmetry of the central “egg”. An emission nebula is a cloud of high temperature gas. Within this type of nebula, a star energizes the atoms in the cloud with ultraviolet radiation. The process is similar to that of a neon light. This causes the nebula to glow. The filamentary outer halo was probably caused by an earlier gas burst of the central star about 4000 years ago (an astronomical blink of an eye). The central star is a very rare O-type star, one that is very large and hot and has a mass between 15 and 90 times that of our Sun. In this case the star is about 40 times as large as the Sun. O-type stars, being so large, have short lives because they burn through their supply of hydrogen quickly. This star is about 3 – 4 million years old and will end its life in about 4 million years in a violent supernova explosion.

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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

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	9037080
PixInsight job	0YCVS4O35RWIML4W8GA8UNKEMPVKDGGT
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	16h33m52s.986
RA (top/left)	16h35m34s.565
RA (top/right)	16h32m11s.421
RA (bottom/right)	16h32m10s.100
RA (bottom/left)	16h35m35s.633

Dec (center)	-48°06′54″.90
Dec (top/left)	-47°48′56″.15
Dec (top/right)	-47°48′53″.20
Dec (bottom/right)	-48°24′49″.38
Dec (bottom/left)	-48°24′49″.81

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Dragon's Egg NGC 6164

Dragon's Egg NGC 6164

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Dragon's Egg NGC 6164

Dragon's Egg NGC 6164

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