Word: vidicon
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Dates: during 1970-1979
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Wild Gyrations. The satellite's twin sensing systems have already proved their worth. Last month, ERTS suffered a mysterious power surge that temporarily affected the stabilizing jets and caused wild gyrations. To protect the satellite's three RCA vidicon cameras (which make up one of the sensing systems), controllers at NASA'S Goddard Space Flight Center shut the cameras down until they could locate the problem and send new instructions to the satellite's computer. Meanwhile, the other system, a multispectral scanner built by Hughes Aircraft Co., was fully able to take up the observational slack...