Crescent, NGC 6888

Noirlab_noao-04494_1024

noirlab_noao-04494 April 1st, 2003

Credit: T.A. Rector (NRAO/AUI/NSF and NOIRLab/NSF/AURA)

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).

Provider: NOIRLab

Image Source: https://noirlab.edu/public/images/noao-04494/

Curator: NSF's NOIRLab, Tucson, AZ, USA

Image Use Policy: Creative Commons Attribution 4.0 International License

Image Details

Image Type
Observation
Object Name
NGC 6888 WR 136
Noirlab_noao-04494_128
 

Position Details

Position (ICRS)
RA = 20h 11m 38.9s
DEC = 38° 36’ 45.0”
Orientation
North is 89.8° CW
Field of View
1.0 x 1.0 degrees
Constellation
Cygnus

Color Mapping

  Telescope Spectral Band Wavelength
Yellow WIYN 0.9-meter Telescope (Mosaic 1) Optical (Sll) 672.0 nm
Blue WIYN 0.9-meter Telescope (Mosaic 1) Optical (Olll) 499.0 nm
Red WIYN 0.9-meter Telescope (Mosaic 1) Optical (Ha) 656.0 nm
Spectrum_base
Yellow
Blue
Red
Noirlab_noao-04494_1280
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ID
noao-04494
Subject Category
Subject Name
NGC 6888, WR 136
Credits
T.A. Rector (NRAO/AUI/NSF and NOIRLab/NSF/AURA)
Release Date
2003-04-01T12:51:36
Lightyears
Redshift
Reference Url
https://noirlab.edu/public/images/noao-04494/
Type
Observation
Image Quality
Distance Notes
Facility
WIYN 0.9-meter Telescope, WIYN 0.9-meter Telescope, WIYN 0.9-meter Telescope
Instrument
Mosaic 1, Mosaic 1, Mosaic 1
Color Assignment
Yellow, Blue, Red
Band
Optical, Optical, Optical
Bandpass
Sll, Olll, Ha
Central Wavelength
672, 499, 656
Start Time
Integration Time
Dataset ID
None, None, None
Notes
Coordinate Frame
ICRS
Equinox
J2000
Reference Value
302.9120408, 38.61249311
Reference Dimension
8578.0, 8205.0
Reference Pixel
2645.588371, 2712.082153
Scale
-0.000118, 0.000118
Rotation
-89.82272533
Coordinate System Projection:
TAN
Quality
Full
FITS Header
Notes
Creator (Curator)
NSF's NOIRLab
URL
https://noirlab.edu
Name
Email
Telephone
Address
950 North Cherry Ave.
City
Tucson
State/Province
AZ
Postal Code
85719
Country
USA
Rights
Creative Commons Attribution 4.0 International License
Publisher
NSF's NOIRLab
Publisher ID
noirlab
Resource ID
noao-04494
Metadata Date
2020-11-13T12:38:58.377462
Metadata Version
1.1
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Detailed color mapping information coming soon...

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There is no distance meta data in this image.