The Dumbbell Nebula, M27 (Frank Alvaro)

Celestial hemisphere: Northern · Constellation: Vulpecula (Vul) · Contains: Dumbbell Nebula · HD189733 · M 27 · NGC 6853 · PK060-03.1

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The Dumbbell Nebula, M27

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The Dumbbell Nebula, M27

The Dumbbell Nebula (also known as the Apple Core Nebula, Messier 27, and NGC 6853) is a planetary nebula (nebulosity surrounding a white dwarf) in the constellation Vulpecula, at a distance of about 1360 light-years. It was the first such nebula to be discovered, by Charles Messier in 1764. In 1970, Bohuski, Smith, and Weedman found an expansion velocity of 31 km/s. Given its semi-minor axis radius of 1.01 ly, this implies that the kinematic age of the nebula is 9,800 years.

Like many nearby planetary nebulae, the Dumbbell contains knots. Its central region is marked by a pattern of dark and bright cusped knots and their associated dark tails. The knots vary in appearance from symmetric objects with tails to rather irregular tail-less objects. In the image, blue represents oxygen, green represents hydrogen, and red indicates sulphur and nitrogen. These dense knots of gas and dust seem to be a natural part of the evolution of planetary nebulas. They form when the stellar winds are not powerful enough to blow away a larger clump of matter but are able to blow away smaller particles, creating a trail behind the clump. The shapes of these knots change as the nebula expands. Similar knots have been discovered in other nearby planetary nebulas that are all part of the same evolutionary scheme. (Wikipedia and NASA.gov)

Southern Hemisphere Astro
Australian Astrophotographers

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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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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.
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Promotions by Reviewers When 3 distinct Reviewers promote the image, it moves on to the next stage of the process: evaluation for IOTD status.
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Status	Advanced success
Started	...
Astrometry.net job	6297356
PixInsight job	C878F4LGF71T7VPDMIRDY10WXLVPK1EF
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	19h59m37s.45
RA (top/left)	20h01m39s.70
RA (top/right)	19h58m13s.46
RA (bottom/right)	19h57m35s.54
RA (bottom/left)	20h01m01s.30

Dec (center)	+22°43′25″.6
Dec (top/left)	+22°52′43″.6
Dec (top/right)	+23°05′54″.0
Dec (bottom/right)	+22°34′00″.7
Dec (bottom/left)	+22°20′53″.4

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The Dumbbell Nebula, M27

The Dumbbell Nebula, M27

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The Dumbbell Nebula, M27

The Dumbbell Nebula, M27

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