The National Radio Astronomy Observatory

Details The National Radio Astronomy Observatory The National Radio Astronomy Observatory

Dec 1974

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974s%26t....48..352f&link_type=abstract

Sky and Telescope, vol. 48, Dec. 1974, p. 352-360.

Astronomy and Astrophysics

Astronomy

Astronomical Observatories, Radio Astronomy, Radio Telescopes, Steerable Antennas, Cassegrain Antennas, Microwave Antennas, Millimeter Waves, Radio Antennas, Radio Interferometers

Scientific paper

The history and facilities of the National Radio Astronomy Observatory (NRAO) are surveyed. The interferometer (near Green Bank, West Virginia) consists of three 85-foot antennas movable along a 2700-meter baseline, integrated with a 45-foot telescope 35 km distant. Simultaneous observations at 3.7 and 11.1 cm are possible. The 300-foot meridian-transit telescope, operating at 11 cm and longer wavelengths, has been used in studies of galactic hydrogen and pulsars. The 140-foot steerable dish is being converted from prime-focus to Cassegrain configuration. It has been used in very-long-baseline interferometry. The same frequencies planned for the very long array (VLA), 1.5, 4.8, 15, and 23 GHz, will be used. The 36-foot telescope on Kitt Peak, Arizona, is used for millimeter-wavelength research.

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