Slide 20: Two Roads that Crossed in the Wood - Growth of US Radio Astronomy in the 1950s and 1960s
![[Test configuration for Polaris solar and lunar sextant]](ewen_50sand60s_slide20.jpg)
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Modified on by Ellen BoutonSlide 20: Two Roads that Crossed in the Wood - Growth of US Radio Astronomy in the 1950s and 1960s
.Prototype test configuration for the Polaris solar and lunar sextant, Ewen-Knight test range, 1959. Credit: Photo courtesy of Doc Ewen.
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