NGC6888 (Crescent Nebula) in RGB-HOO (kaelig)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: Crescent Nebula · HD192003 · HD192020 · HD192102 · HD192123 · HD192163 · HD192182 · HD192303 · HD192361 · HD192422 · HD192443 · HD192444 · HD192537 · HD228066 · HD228067 · HD228077 · HD228099 · HD228139 · HD228152 · HD228153 · HD228185 · HD228186 · HD228198 · HD228205 · HD228243 · HD228261 · HD228262 · HD228277 · HD228289 · HD228290 · And 19 more.

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NGC6888 (Crescent Nebula) in RGB-HOO

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NGC6888 (Crescent Nebula) in RGB-HOO

The Crescent Nebula (also known as NGC 6888, Caldwell 27, Sharpless 105) is an emission nebula in the constellation Cygnus, about 5000 light-years away from Earth. It was discovered by William Herschel in 1792.=10.5px It is formed by the fast stellar wind from the Wolf-Rayet star WR 136 (HD 192163) colliding with and energizing the slower moving wind ejected by the star when it became a red giant around 250,000=10.5px to 400,000 years ago. The result of the collision is a shell and two shock waves, one moving outward and one moving inward. The inward moving shock wave heats the stellar wind to X-ray-emitting temperatures.It is a rather faint object located about 2 degrees SW of Sadr.

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ASI 533MM Pro
SAR Team Astro

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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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Status	Advanced success
Started	...
Astrometry.net job	7928281
PixInsight job	C6VL4LTXF8AAZQRYCMCISUT4I2IBNJ6D
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	20h12m11s.40
RA (top/left)	20h09m30s.77
RA (top/right)	20h10m16s.13
RA (bottom/right)	20h14m50s.52
RA (bottom/left)	20h14m08s.36

Dec (center)	+38°20′09″.6
Dec (top/left)	+38°44′02″.1
Dec (top/right)	+37°47′48″.5
Dec (bottom/right)	+37°55′59″.9
Dec (bottom/left)	+38°52′19″.8

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NGC6888 (Crescent Nebula) in RGB-HOO

NGC6888 (Crescent Nebula) in RGB-HOO

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NGC6888 (Crescent Nebula) in RGB-HOO

NGC6888 (Crescent Nebula) in RGB-HOO

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