[Doc Ewen looks into the horn antenna, 1950]
Image courtesy of Doc Ewen


Harvard Cyclotron: 1948-1951

Detection of HI Line: 1951

Harvard 24ft and 60ft and NRAO founding: 1952-1956

1950s and 1960s: Two Roads that Crossed

Microwave & Millimeter Wave Applications in the 1970s and 1980s

Mm Wave Radiometry in the 1990s

May 2001 visit to NRAO Green Bank



[Doc Ewen and horn antenna, 2001]
Image courtesy of Doc Ewen

Doc Ewen: The Horn, HI, and Other Events in US Radio Astronomy

by Doc Ewen, © 2003

Slide 10: Two Roads that Crossed in the Wood - Growth of US Radio Astronomy in the 1950s and 1960s

[Navy's planned 600 foot telescope]

The Navy's planned 600 foot antenna at Sugar Grove WV. The uncompleted project was killed by the Defense Dept in 1962 after construction of a 17,000 cubic yard concrete foundation and 550 ton pintle bearing. Credit: Photo from NRAO/AUI/NSF files.

Slide 11
Modified on Tuesday, 11-Jan-2005 11:11:27 EST by Ellen Bouton