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

[Hat Creek Observatory 33 and 85 foot telescope]

.The 33 and 85 foot telescopes at University of California Berkeley's Hat Creek Observatory, about 250 miles north of Berkeley. The 33 foot was first used in July 1960, and 85 foot in June 1962. Credit: Photo courtesy of Dcc Ewen.

Slide 5
Modified on Friday, 07-Jan-2005 08:57:44 EST by Ellen Bouton