Grote Reber’s First Radio Telescope
In a side yard of his mother’s house in Wheaton, Illinois, a 26-year old engineer named Grote Reber built the first dish antenna radio telescope in 1937. He used wooden rafters, galvanized sheet metal, and spare parts from a Ford Model T truck. With this 31-foot diameter telescope, Reber mapped the radio structure of the our Galaxy, discovered bright sources of radio waves outside our Galaxy, and made the observations that would later help physicists discover non-thermal radiation.
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