Crescent, NGC6888


About this image

This wide-field image of the Crescent Nebula was taken at the National Science Foundation's 0.9-meter telescope on Kitt Peak with the NOAO Mosaic CCD camera. Also known as NGC6888, the nebula is a shell of gas that is being energized by the strong stellar wind from the Wolf-Rayet star WR 136, the bright star at the center of the nebula. It is located in the constellation of Cygnus, the Swan. Wolf-Rayet stars are very hot, massive stars that are blowing off their outer layers. In this image north is down and east is to the right. This image was created by combining emission-line images in Hydrogen-alpha (red), Oxygen [O III] (blue) and Sulfur [S II] (yellow).

More: nebulae page, emission nebulae page.

Minimum credit line: T.A. Rector (NRAO/AUI/NSF and NOAO/AURA/NSF)

Downloadable versions:
418 x 400 42 kb color JPEG (on this page)
1071 x 1024 320 kb color JPEG
2141 x 2048 1.0 Mb color JPEG
8578 x 8205 15.9 Mb color JPEG
8578 x 8205 68.8 Mb 8-bit color TIFF
8578 x 8205 206.3 Mb 24-bit color TIFF
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