[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

Millimeter Wave Radiometry in the 1990s: MAPS slide 6

[MAPS rocket stand measurement configuration]

MAPS rocket stand measurement configuration at Stennis AFB. Top left: MAPS normal configuration. Top right: MAPS three frequency RF head; left to right, 60, 95, and 35 GHz. Bottom left: MAPS RF head located on the ground. Bottom right: Close-up of MAPS RF head. Credit: Photos courtesy of Doc Ewen.

MAPS slide 7
Modified on Sunday, 05-Jun-2005 07:42:36 EDT by Ellen Bouton