National Radio Astronomy Observatory
| Organization | Associated Universities, Inc. |
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| Established | 17 November 1956 |
| Website | www |
| Telescopes | Green Bank Telescope, Very Large Array, Atacama Large Millimeter Array |
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The National Radio Astronomy Observatory (NRAO) is a Federally Funded Research and Development Center of the United States National Science Foundation operated under cooperative agreement by Associated Universities, Inc for the purpose of radio astronomy. NRAO designs, builds, and operates its own high sensitivity radio telescopes for use by scientists around the world.
The NRAO headquarters is located on the campus of the University of Virginia. The North American ALMA Science Center and the NRAO Technology Center are also located in Charlottesville, Virginia.
NRAO is the operator of the world's largest fully steerable radio telescope, the Robert C. Byrd Green Bank Telescope, which stands near Green Bank, West Virginia. The observatory contains several other telescopes, among them the 140-foot (43 m) telescope that utilizes an equatorial mount uncommon for radio telescopes, three 85-foot (26 m) telescopes forming the Green Bank Interferometer, a 40-foot (12 m) telescope used by school groups and organizations for small scale research, a fixed radio 'horn' built to observe the radio source Cassiopeia A, as well as a reproduction of the original antenna built by Karl Jansky while he worked for Bell Labs to detect the interference that was discovered to be previously unknown natural radio waves emitted by the universe.
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