The Cyngus Loop - Sh2-103 (Jan Erik Vallestad)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: 48 Cyg · 49 Cyg · 52 Cyg · BW Vul · HD196629 · HD196852 · HD196954 · HD196972 · HD197120 · HD197206 · HD197207 · HD197227 · HD197395 · HD197550 · HD197702 · HD197839 · HD198198 · HD198254 · HD198313 · HD198330 · HD198425 · HD198482 · HD198526 · HD198550 · HD198626 · HD198627 · HD198820 · HD198821 · HD198976 · HD199055 · And 31 more.

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The Cyngus Loop - Sh2-103

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The Cyngus Loop - Sh2-103

Discovered in 1784 by William Herschel. A remnant of a supernova which occured somewhere between 10.000 and 20.000 years ago, showing itself as a expanding cloud of heated and ionized gas and dust in the constellation Cygnus. The star of origin was 20 times more massive than our sun, and the supernova would have been bright enough to see from Earth.

The Western Veil - NGC6960
Also known as "The Witch's Broom" near the bright star 52 Cygni

Pickering's Triangle
To the north of the center of the remnant.

NGC6974 & NGC 6979
To the left of Pickering's Triangle, and right of NGC6992.

The Eastern Veil
To the right (north) lies NGC6992, further left (south) is NGC6995 and in the far left edge lies IC1340.

The Southeastern Knot
South of The Eastern Veil.

The approximate center of the remnant

NGC7013
A relatively near spiral or lenticular galaxy estimated to be around 37-41 million ly from Earth. It was discovered by William Herschel in 1784.

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Title: Cygnus Loop Layers

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Status	Advanced success
Started	...
PixInsight job	UMV1KO37ISF28UA2HIC6F4PA46N9G41J
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	20h50m25s.30
RA (top/left)	20h54m57s.95
RA (top/right)	20h34m54s.97
RA (bottom/right)	20h46m11s.40
RA (bottom/left)	21h05m38s.80

Dec (center)	+30°42′22″.9
Dec (top/left)	+34°00′19″.4
Dec (top/right)	+31°35′37″.9
Dec (bottom/right)	+27°23′37″.3
Dec (bottom/left)	+29°42′07″.5

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