This image may not be used to state or imply the endorsement by NRAO, AUI or NSF of any company or product Grote Reber's first radio telescope, 1930s.

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This image may not be used to state or imply the endorsement by NRAO, AUI or NSF of any company or product Grote Reber's first radio telescope, 1930s. In 1937, 26-year-old radio engineer Grote Reber built the first dish antenna radio telescope, constructing it in a side yard of his mother's house in Wheaton, Illinois, USA. 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 observations that would later help physicists discover non-thermal radiation.

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