NGC 6888 The Crescent Nebula SHO Modified (Tom Peter AKA Astrovetteman)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: Crescent Nebula · NGC 6888 · Sh2-105

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NGC 6888 The Crescent Nebula SHO Modified

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NGC 6888 The Crescent Nebula SHO Modified

The Crescent Nebula, NGC 6888, lies in the constellation Cygnus at a distance of about 5,000 light-years from Earth. The nebula is about 25 light-years across and is powered by it's central star WR 136, which is a Wolf-Rayet star that is ejecting it's outer layers. About 250,000 to 400,000 years ago, WR 136 ejected the initial stellar shell when it was a red giant. Now being categorized as a Wolf-Rayet star it's stellar winds have greatly increased, thus making this a very complex combination of ionized Ha, OIII, and SII emissions.

This data was acquired in August 2020 with Telescope Live's Officina Stellar ProRC 700/FLI PL 16803 at the IC Astronomy Observatory in Spain. This is a Pro Data Set containing 20 Ha@300s, 20 OIII@300s, and 10 SII@300s, for a total integration time of 4 hours 10 minutes. I deviated from the traditional Hubble Palette by mapping R=30%SII+70%Ha, G=15%SII+15%Ha+70%OIII, B=5%SII=5%Ha+90%OIII.....just for fun! It's processed with Pixinsight and tweaked with PS.

Anyway, hope ya like it!

Tom

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Status	Advanced success
Started	...
Astrometry.net job	4368321
PixInsight job	GLPF0TJ7KRBR4Q23JRBSX7AXGG4HCPMB
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	20h12m13s.537
RA (top/left)	20h13m09s.758
RA (top/right)	20h11m17s.108
RA (bottom/right)	20h11m17s.659
RA (bottom/left)	20h13m09s.720

Dec (center)	+38°20′12″.17
Dec (top/left)	+38°31′05″.63
Dec (top/right)	+38°31′02″.34
Dec (bottom/right)	+38°09′17″.51
Dec (bottom/left)	+38°09′20″.50

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NGC 6888 The Crescent Nebula SHO Modified

NGC 6888 The Crescent Nebula SHO Modified

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NGC 6888 The Crescent Nebula SHO Modified

NGC 6888 The Crescent Nebula SHO Modified

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