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Crescent Nebula : NGC 6888 image

Crescent Nebula : NGC 6888

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Contains: Deep sky object
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Photographed in my backyard in Harrison County, WV. NGC 6888, also known as the Crescent Nebula, is about 5,000 light years from Earth and is a cosmic bubble about 25 light-years across, blown by winds from its central, bright, massive star. This photo uses 7nm and 3nm narrowband filters to isolate light from hydrogen and oxygen atoms the wind-blown nebula. Visible within the nebula, NGC 6888's central star is classified as a Wolf-Rayet star (WR 136). The star is shedding its outer envelope in a strong stellar wind. Many folks including my wife say it looks like a brain ?. If you zoom in on it and see that thin blue shell, that’s oxygen gas. The red in the image is representative of Hydrogen. Camera ZWO ASI294MM Pro Telescope AstroTech AT72EDII Mount iOptron CEM26 2 hours of Oiii and 2.5 hours of Ha stacked, drizzled, and processed in Pixinsight