Sharpless 278 in HaRGB (James E.)

Celestial hemisphere: Southern · Constellation: Orion (Ori) · Contains: LBN 956 · LBN 957 · LBN 960 · LBN 964 · LDN 1634 · Sh2-278

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Sharpless 278 in HaRGB

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Sharpless 278 in HaRGB

A fairly faint nebulous area with a mix of Ha-prominent emission nebula with reflection nebula. My focus was to bring out the interesting hydrogen cloud structure.

Sharpless 278 is an emission nebula in Orion about 3 degrees north of Rigel. It is a fragment of the gas clouds that make up a large molecular nebulous complex. Like the other peripheral clouds of the complex, this also shows signs of erosion due to the shock wave caused by the stellar wind of stars of spectral class O and B belonging to the Orion OB1 association which is also the source of ionization. The nebula is made up of two comet-like gas canopies with the head facing the star association and the dispersing canopy facing the opposite side. Part of the gas that makes up the cloud is not ionized thus remaining dark while other parts are instead illuminated but not ionized, thus shining by reflection. (irida-obervatory.org)

Taken over several nights: Dec 12, 14, 19, 20, 2021; Jan 4, 7, 2022.

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Status	Advanced success
Started	...
Astrometry.net job	5414441
PixInsight job	58VNMCZI0HOPMT9JLK42TJ5JAUDR4V0O
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	05h20m01s.454
RA (top/left)	05h23m24s.628
RA (top/right)	05h23m28s.348
RA (bottom/right)	05h16m39s.420
RA (bottom/left)	05h16m33s.695

Dec (center)	-05°13′42″.15
Dec (top/left)	-06°30′08″.71
Dec (top/right)	-03°57′56″.100
Dec (bottom/right)	-03°57′04″.59
Dec (bottom/left)	-06°29′22″.25

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Sharpless 278 in HaRGB

Sharpless 278 in HaRGB

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