NGC 6888 Crescent Nebula (Reprocessed 2024) (Szoomer)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: Crescent Nebula · LBN 192 · LBN 193 · LBN 203 · LBN 206 · LBN 208 · LBN 215 · LDN 866 · NGC 6881 · NGC 6888 · PK076+01.2 · Sh2-105

NGC 6888 Crescent Nebula (Reprocessed 2024)

An emission nebula in the constellation Cygnus, the Crescent Nebula is formed by the fast stellar wind from HD 192163, a Wolf-Rayet star, colliding with and energizing the slower moving wind ejected by the star when it became a red giant. The collision forms 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. Wolf-Rayet stars have lost their outer hydrogen and are fusing helium and heavier elements. They are hotter than almost all other kinds of stars, and produce strong stellar winds.

This picture was shot from my Bortle 7 backyard in July of 2022, and was my most successful attempt to capture the outer shell of oxygen which appears blue in the photo.

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Title: Reprocessed Starless

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Status	Advanced success
Started	...
Astrometry.net job	9469352
PixInsight job	R413WA4FSKQ1ZW1AU7GYD5KML14DL9V3
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	20h12m02s.16
RA (top/left)	20h12m47s.85
RA (top/right)	20h04m52s.81
RA (bottom/right)	20h11m18s.49
RA (bottom/left)	20h19m15s.84

Dec (center)	+38°22′51″.7
Dec (top/left)	+39°50′24″.5
Dec (top/right)	+37°57′20″.8
Dec (bottom/right)	+36°55′09″.4
Dec (bottom/left)	+38°46′38″.4

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NGC 6888 Crescent Nebula (Reprocessed 2024)

NGC 6888 Crescent Nebula (Reprocessed 2024)

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NGC 6888 Crescent Nebula (Reprocessed 2024)

NGC 6888 Crescent Nebula (Reprocessed 2024)

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