Crescent, NGC 6888
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).
Credit:About the Image
Id: | noao-04494 |
Type: | Observation |
Release date: | April 1, 2003, 12:51 p.m. |
Related announcements: | noaoann03006 |
Size: | 8578 x 8205 px |
About the Object
Image Formats
Large JPEG
47.2 MB
Publication TIFF 4K
37.5 MB
Publication JPEG
8.3 MB
Screensize JPEG
692.6 KB
Coordinates
Position (RA): | 20 11 38.89 |
Position (Dec): | 38° 36' 44.98" |
Field of view: | 60.73 x 58.09 arcminutes |
Orientation: | North is 89.8° right of vertical |
Colors & filters
Band | Wave-length | Tele-scope |
---|---|---|
Optical Olll | 499 nm | WIYN 0.9-meter Telescope Mosaic I |
Optical Sll | 672 nm | WIYN 0.9-meter Telescope Mosaic I |
Optical Ha | 656 nm | WIYN 0.9-meter Telescope Mosaic I |