DocumentCode
1045660
Title
The University of Illinois radio telescope
Author
Swenson, G.W., Jr. ; Lo, Y.T.
Author_Institution
University of Illinois at Urbana-Champaign, Urbana, IL
Volume
9
Issue
1
fYear
1961
fDate
1/1/1961 12:00:00 AM
Firstpage
9
Lastpage
16
Abstract
The University of Illinois radio telescope is a reflector in the shape of a parabolic cylinder whose aperture is 
feet. A 425-foot-long phase-adjustable array of receiving antennas lies along the focal line and produces a pencil beam one-third degree in width, steerable in the meridian plane up to 30 degrees in either direction from the zenith. The array was designed by means of a novel procedure using both variable spacing and variable excitation to produce a prescribed beamwidth. The reflector is built of earth, utilizing a natural ravine. The purpose of the instrument is to compile a catalog of faint extragalactic radio sources.
feet. A 425-foot-long phase-adjustable array of receiving antennas lies along the focal line and produces a pencil beam one-third degree in width, steerable in the meridian plane up to 30 degrees in either direction from the zenith. The array was designed by means of a novel procedure using both variable spacing and variable excitation to produce a prescribed beamwidth. The reflector is built of earth, utilizing a natural ravine. The purpose of the instrument is to compile a catalog of faint extragalactic radio sources.Keywords
Cylindrical reflector antennas; Radio telescopes; Reflector antennas, cylindrical; Building materials; Earth; Electromagnetic scattering; Poles and towers; Radio astronomy; Rivers; Rough surfaces; Stability; Steel; Surface roughness;
fLanguage
English
Journal_Title
Antennas and Propagation, IRE Transactions on
Publisher
ieee
ISSN
0096-1973
Type
jour
DOI
10.1109/TAP.1961.1144945
Filename
1144945
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