Cometary Globule CG4

noirlab_noao0608a March 8th, 2006

Credit: CTIO/NOIRLab/NSF/AURA/T.A. Rector (University of Alaska Anchorage)/T. Abbott

The image from the Blanco 4-meter telescope was taken in four filters, three of which are for blue, green and near-infrared light. The fourth is designed to isolate a specific color of red, known as hydrogen-alpha, which is produced by warm hydrogen gas.

Provider: NOIRLab

Image Source: https://noirlab.edu/public/images/noao0608a/

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

Image Use Policy: Creative Commons Attribution 4.0 International License

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Image Details

Image Type: Observation
Object Name: CG 4

Position Details

Position (ICRS): RA = 7h 34m 14.1s; DEC = -47° 4’ 49.7”
Orientation: North is 0.5° CCW
Field of View: 33.1 x 22.1 arcminutes
Constellation: Puppis

Color Mapping

Telescope	Spectral Band	Wavelength
Blanco-4m (Mosaic II)	Optical (Ha)	657.0 nm
Blanco-4m (Mosaic II)	Infrared (I)	820.0 nm
Blanco-4m (Mosaic II)	Optical (V)	538.0 nm
Blanco-4m (Mosaic II)	Optical (B)	438.0 nm

ID: noao0608a
Subject Category
Subject Name: CG 4
Credits: CTIO/NOIRLab/NSF/AURA/T.A. Rector (University of Alaska Anchorage)/T. Abbott

Release Date: 2006-03-08T00:00:00
Lightyears
Redshift
Reference Url: https://noirlab.edu/public/images/noao0608a/

Type: Observation
Image Quality
Distance Notes

Facility: Víctor M. Blanco 4-meter Telescope, Víctor M. Blanco 4-meter Telescope, Víctor M. Blanco 4-meter Telescope, Víctor M. Blanco 4-meter Telescope
Instrument: Mosaic II, Mosaic II, Mosaic II, Mosaic II
Color Assignment: Red, Orange, Green, Blue

Band: Optical, Infrared, Optical, Optical
Bandpass: Ha, I, V, B
Central Wavelength: 657, 820, 538, 438

Start Time
Integration Time
Dataset ID: None, None, None, None
Notes

Coordinate Frame: ICRS
Equinox: J2000
Reference Value: 113.5587096, -47.08048427
Reference Dimension: 4000.0, 2666.0

Reference Pixel: 1559.745895, 680.8616943
Scale: -0.000137, 0.000138
Rotation: 0.4975136184
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: noao0608a

Resource URL: https://storage.noirlab.edu/media/archives/images/original/noao0608a.tif
Related Resources

Metadata Date: 2025-07-23T11:25:58.021964
Metadata Version: 1.1

Detailed color mapping information coming soon...

There is no distance meta data in this image.