Bubble Nebula - NGC7635 (Andrei Gusan)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: Bubble Nebula · LBN 548 · LBN 549 · LDN 1231 · NGC 7635 · Sh2-162

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Bubble Nebula - NGC7635

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Bubble Nebula - NGC7635

NGC 7635 is an emission nebula located in the northern constellation Cassiopeia. It was nicknamed the "Bubble Nebula" because of its shape, which was created by a strong stellar wind from a young massive star located above and right of the Bubble's center. Although the star is around two million years old, the surrounding nebula is apparently only about 40,000 years old. The bubble is expected to be formed as a shock front where the stellar wind meets interstellar material at supersonic speeds (1,800–2,500 km/s), causing the star to lose over a millionth of the mass of the Sun every year. The hot star is several hundred thousand times more luminous and some 45 times more massive than the Sun. The about 10 light-year diameter bubble offers evidence of energetic and violent events from the life cycle of massive stars.

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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	5245903
PixInsight job	MBCFYSDYPK18L9LHU8DAO9E8LGX8HS5R
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	23h20m42s.895
RA (top/left)	23h23m14s.243
RA (top/right)	23h23m42s.344
RA (bottom/right)	23h18m06s.864
RA (bottom/left)	23h17m48s.507

Dec (center)	+61°11′25″.25
Dec (top/left)	+60°41′51″.42
Dec (top/right)	+61°38′48″.87
Dec (bottom/right)	+61°40′47″.69
Dec (bottom/left)	+60°43′47″.54

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Bubble Nebula - NGC7635

Bubble Nebula - NGC7635

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Bubble Nebula - NGC7635

Bubble Nebula - NGC7635

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