[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

STAG Program Weston testing: Slide 1

[STAG test set-up]

A dolly (foreground) is motor-driven back and forth over a bin of water. The 30 x 60 foot water bin is contained in a vinyl liner supported on a 2 x 6 inch frame. The dolly moves over the water on 2 x 6 inch rails that engage the dolly wheels. Credit: Photo courtesy of Doc Ewen.

STAG slide 2
Modified on Saturday, 04-Jun-2005 22:20:05 EDT by Ellen Bouton