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Gemini-11 Experiment S-13 Ultraviolet Astronomical Camera. It will be used to test the techniques of ultraviolet photography under vacuum conditions and obtain ultraviolet radiation observations of stars in wave length region of 2,000 to 4,000 Angstroms by spectral means. Equipment is the Maurer 70mm camera with UV lens (f3.3) and magazine, objective grating and objective prism, extended shuttle actuator, and mounting bracket. For the experiment, the camera is mounted on the centerline torque box to point through the opened right-hand hatch. Propellant expenditure is estimated at 4.5 pounds per night pass. Two night passes will be used to photograph probably six star fields. Sponsors are NASA's Office of Space Science and Applications and Northwestern University.