SH2-86 in SHO (Team OURANOS)

Celestial hemisphere: Northern · Constellation: Vulpecula (Vul) · Contains: NGC 6823

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SH2-86 in SHO

Link: https://team-ouranos.fr/sh2-86/

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SH2-86 in SHO

Link: https://team-ouranos.fr/sh2-86/

While the apparent size of this nebula may seem modest compared to the "big" nebulae of the summer, it nevertheless extends over 40′, more than the apparent size of the full Moon. Unfortunately, its very low surface brightness classifies it as a "difficult" object to image correctly with a good signal-to-noise ratio.

Nevertheless, this nebula is not lacking in interest and presents fine details, particularly in the darker areas with the presence of "pillars" (similar to the famous "pillars" of the M16 nebula), which are active sites of star formation.

As a result of this star-forming activity, the open cluster NGC 6823 occupies the center of this nebula. The stars at the center of this cluster, born barely 2 million years ago as a result of the collapse of certain parts of the nebula (the "pillars" that have now disappeared...), are predominantly bright blue stars, i.e. hot and very luminous, particularly in the ultraviolet. These stars, born of the gas cloud, illuminate and ionize the latter, making the nebula visible, particularly in the Ha line of hydrogen.

Within this nebula, we can observe more advanced stages of erosion caused by the radiation of new stars: the fragmentation of the pillars into several smaller, denser and more compact globules of gas and dust, the result of the gravitational collapse of the surrounding matter. It's within these "bok" globules, opaque to visible radiation, that new stars are born.

This nebula, which, like the open cluster, extends over a diameter of around 50 light-years, is actually part of a much larger gas cloud (called SH2-86), which extends as far as the constellation of Cygnus...

Sharpless2 Objects
Astrophotographes (France)
Narrowband imaging

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	Distinct awarded users	Total awarded images
Image of the day
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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
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	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
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Amateur hosting facility
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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	Basic success
Started	...
Astrometry.net job	9023631
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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SH2-86 in SHO

SH2-86 in SHO

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Image Index:

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SH2-86 in SHO

SH2-86 in SHO

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