NGC 6888 & Soap Bubble (Darius Kopriva)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: 34 Cyg) · 34 P Cyg · Crescent Nebula · HD192003 · HD192020 · HD192041 · HD192078 · HD192079 · HD192102 · HD192123 · HD192163 · HD192182 · HD192303 · HD192361 · HD192422 · HD192443 · HD192444 · HD192537 · HD192744 · HD192766 · HD192934 · HD193007 · HD193032 · HD193033 · HD193076 · HD193077 · HD193183 · HD193184 · HD228051 · HD228061 · And 111 more.

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NGC 6888 & Soap Bubble

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NGC 6888 & Soap Bubble

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. 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 to 400,000[citation needed] 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. For most telescopes it requires a UHC or OIII filter to see. Under favorable circumstances a telescope as small as 8 cm (with filter) can see its nebulosity. Larger telescopes (20 cm or more) reveal the crescent or a Euro sign shape which makes some to call it the "Euro sign nebula".

The Soap Bubble Nebula, or PN G75.5+1.7, is a planetary nebula in the constellation Cygnus, near the Crescent Nebula (NGC 6888). It was discovered by amateur astronomer Dave Jurasevich using an Astro-Physics 160 mm refractor telescope with which he imaged the nebula on June 19, 2007 and on July 6, 2008. The nebula was later independently noted and reported to the International Astronomical Union by Keith B. Quattrocchi and Mel Helm who imaged PN G75.5+1.7 on July 17, 2008. The nebula measures 260″ in angular diameter with a central star that has a J band magnitude of 19.45.

Southern Hemisphere 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.
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	6741696
PixInsight job	Z7C9F85ZV2DAPEQ3SV7WZ6FAH8W41YCP
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	20h13m57s.58
RA (top/left)	20h17m58s.43
RA (top/right)	20h09m53s.61
RA (bottom/right)	20h10m01s.96
RA (bottom/left)	20h17m56s.62

Dec (center)	+38°11′34″.7
Dec (top/left)	+38°59′04″.1
Dec (top/right)	+38°58′23″.2
Dec (bottom/right)	+37°23′38″.0
Dec (bottom/left)	+37°24′16″.3

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NGC 6888 & Soap Bubble

NGC 6888 & Soap Bubble

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NGC 6888 & Soap Bubble

NGC 6888 & Soap Bubble

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