NSSDCA ID: 1965-100A-03
Mission Name: Gemini 7Two interferometer spectrometers and a multichannel spectroradiometer were used to study the spectral irradiance of natural phenomena from 0.2- to 12-microns. The multichannel spectroradiometer consisted of a photomultiplier tube (IP28), and a lead sulfide detector. The spectral bands were 0.2 to 0.35 and 1.0 to 3.0 microns, respectively. The instrument had a 2 deg field of view. The IR interferometer spectrometer contained a lead sulfide detector and a bolometer detector which provided correlative information to the two similar channels (1 to 3, and 3 to 15 microns) of the spectroradiometer. A cyrogenically cooled interferometer spectrometer used a mercury-doped germanium detector and measured in the 8- to 12-micron range. It was cryogenically cooled with liquid neon to maintain a temperature of -397 deg f for approximately 15 hr. Data from the experiment were stored on the spacecraft recorder which provided 56 min of observations for each of the three channels. Three channels of real-time fm data were also provided to selected ground stations. Approximately three hr of data were gathered by these instruments for this and the space object radiometry experiment. Measurements were obtained for various stars, void areas of space, the planet Venus, and the sun. Recorder difficulty occurred, but caused no serious loss of data and the experiment was considered successful.
Questions and comments about this experiment can be directed to: Coordinated Request and User Support Office
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