Word: 13m
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Dates: during 1980-1989
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...housed forward near its two TV cameras, and includes an infrared radiometer that measures the heat of planets and spectrometers to analyze composition of the atmosphere. The magnetometers for locating and measuring magnetic fields are carried on the opposite side of the antenna, on a derrick-like boom (13m, 43 ft.), to keep them free from magnetic distortion. Power to run all this equipment comes from three cylindrical Plutonium generators carried below the spacecraft to keep the radiation from affecting the instruments...