IC5146 Cocoon Nebula (Richard Francis)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: Cocoon nebula · IC 5146

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IC5146 Cocoon Nebula

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IC5146 Cocoon Nebula

The Cocoon Nebula (designated IC5146) is a stellar nursery, where new stars are being born. The centre star, which is lighting up the whole nebula, was formed only about 100 thousand years ago. It’s about 4000 lightyears away and is about 15 lightyears across.

It’s a combination of a bright emission nebula, where hydrogen gas is being energised by the bright new stars, and a dark nebula, formed of dust, which weaves through it and obscures the light. In fact the dark nebula seems to cocoon the glowing red emission nebula and actually extends much further away forming a tail. The new stars form a cluster, which has the name Collinder 470.

Amazingly, it wasn’t discovered until 1899, by a British clergyman and well-known astronomer, called Thomas Espin. In 1900 Max Wolf, usually noted as the co-discoverer, took the first photograph of it.

Original
Final
B

B

Description: I added much more raw data (and removed some of the older subs) and then reprocessed. With the new data there are 13x 600s R, 10x 600s G, 9x 600s B and 13x 600s L.

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Status	Advanced failed
Started	...
Astrometry.net job	2189959
PixInsight job	MXHQ8Y1OIFYZGI79QPSJKZOMRCATZ64R
PixInsight queue size	n/a
PixInsight stage	PLATE_SOLVING_IMAGE

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IC5146 Cocoon Nebula

IC5146 Cocoon Nebula

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IC5146 Cocoon Nebula

IC5146 Cocoon Nebula

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