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Gerhard Bachmayer | all galleries >> AstroPhotos >> Astrophotos 2008-2013 > NGC6888 - the Crescent Nebula in Cygnus
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NGC6888 - the Crescent Nebula in Cygnus
09-SEPT-2008

NGC6888 - the Crescent Nebula in Cygnus

The nebula is the glowing remain of the outer hydrogen shell, shed off from a red super-giant sun and exposing its helium burning center, which is called a Wolf-Rayet star. Strong stellar winds from the star compressed and stimulated the surrounding gas and dust, and the strong ultra violett radiation excited it to glow.
In a few million years the star will end its life in a super nova.

Telescope: ASA 10N-OK3 f3,6
Mount: Astrotec OTE150
Guider: Starlight XPress Loadstar
Camera: FLI PL16803
Filter-wheel: FLI CW 5-7
Filter: FLI RGB, Ha - 8nm, OIII - 8nm
Exposure: Ha:9x600sec, OIII:4x900sec, RGB: 5x120sec each
Programs: Maxim DL 5.0, CCDStack 1.37, PixInsight SE 1.2 full exif


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