The Cygnus Wall (Richard Francis)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: LBN 348 · LBN 349 · LBN 354 · LBN 356 · LDN 935

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The Cygnus Wall

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The Cygnus Wall

This image is part of a huge area of nebulosity called the North American Nebula, as it's shape resembles that continent. In fact the nebulosity is even bigger than it seems since the adjacent Pelican Nebula is part of the same object, though separated by an dark band of dust. The nebula is much too large to fit into the field of view of my camera so here I've chosen to image a part which corresponds to the "Gulf of Mexico" (which is part of the dust cloud) and "Central America". This part is called the Cygnus Wall.

The North American Nebula was first noticed by William Herschel in 1786, but it wasn'tt until one of the first astrophotographers, Max Wolf, imaged it in 1890 that the shape became apparent. Wolf gave it the name North American Nebula.

The distance to the whole nebula was determined in 2020 using astrometry data from ESA's Gaia spacecraft, at 2590 light years and the ensemble, including the Pelican Nebula, is about 140 light years across. To ionise the gases of the nebula such that they emit light requires a strong ultra-violet source, a hot star of more than 30,000K (compared to our sun's surface temperature of 6,000K). No suitably hot star is visible in the area so it is assumed to lie hidden behind the obscuring dust cloud, and indeed a candidate, very hot star has been found using infra-red telescopes which can penetrate the dust.

UK Astro-Imaging
Astrophotographes (France)
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Narrowband imaging

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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.

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Status	Advanced success
Started	...
Astrometry.net job	5374769
PixInsight job	EQEF1Z7FI74OY1RZBSI5Y5BS2CX7D4H0
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	20h58m16s.209
RA (top/left)	21h01m15s.350
RA (top/right)	20h55m16s.514
RA (bottom/right)	20h55m20s.350
RA (bottom/left)	21h01m12s.679

Dec (center)	+43°43′39″.37
Dec (top/left)	+44°15′41″.92
Dec (top/right)	+44°15′34″.31
Dec (bottom/right)	+43°11′21″.47
Dec (bottom/left)	+43°11′27″.98

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