Doc Ewen

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

by Doc Ewen, © 2003


Slide 21: Detecting the Interstellar Hydrogen Line, 1951

[Receiver]

A general view of the receiver, taken from the door into the room. The throat of the horn (not shown) enters from the left through the window. [Photo courtesy of Doc Ewen]

Slide 22
Modified on by Ellen Bouton