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

[Needham radio telescope]

The Needham radio telescope near the Highland Ave. ramp off Route 128 west of Boston, 1956-1965. The telescope was the first large (28 foot) equatorially mounted millimeter wave telescope. Credit: Photo courtesy of Doc Ewen.

Slide 16
Modified on Thursday, 30-Dec-2004 11:00:45 EST by Ellen Bouton