The Neutral Gas Disk of the Milky Way |
 | Minimum credit line: Image courtesy of NRAO/AUI
(for details, see .
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This figure shows the distribution of atomic hydrogen at all locations in the
sky. All of this hydrogen is in our galaxy. Red
indicates directions of high hydrogen density, blue and black show areas
with little hydrogen. The figure is centered
on the galactic center and galactic longitude increases to the left. The
data came from measurements of the 21cm
line of hydrogen by radio telescopes. Some of the hydrogen loops outline
old supernova remnants.
This image is a composite from many 21cm surveys. It includes data from the
NRAO Green Bank, West Virginia 140-
foot and 300-foot telescopes, the 85-foot Hat Creek Telescope of The
University of California at Berkeley, The AT&T
Bell-Labs Horn-Reflector Telescope at Holmdel, New Jersey and The 60-foot
Telescope at the Parkes Radio
Observatory in Australia. Investigator(s): J.M. Dickey and F.J. Lockman This image is available in the following downloadable versions:
- 577 x 311
- 902 x 486
- 1803 x 972
If you would like to obtain a higher resolution version of this image,
please contact .
- Read the
- Up one level for more info on
- For unfamiliar terms, visit the NRAO
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Telescope
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NRAO 140-ft and 300-ft, Hat Creek Telescope, Horn-Reflector Telescopes, 60-ft Parkes Telescope
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Type of Observation
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Spectral Line Observations
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Wavelength
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21 cm
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Frequency
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1420.4 MHz
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Species
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HI
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Field of View
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360.0000 x 360.0000 degrees
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