A Near-Infrared Mapping Spectrometer For Investigation Of Jupiter And Its Satellites

Irving M. Aptaker

doi:10.1117/12.935193

30 November 1983 A Near-Infrared Mapping Spectrometer For Investigation Of Jupiter And Its Satellites

Irving M. Aptaker

Author Affiliations +

Proceedings Volume 0395, Advanced Infrared Sensor Technology; (1983) https://doi.org/10.1117/12.935193
Event: 1983 International Technical Conference/Europe, 1983, Geneva, Switzerland

Abstract

The Near-Infrared Mapping Spectrometer (NIMS) is one of the science instruments in the Galileo Mission, which will explore Jupiter and its satellites in the late-1980's. The NIMS experiment will map geological units on the surfaces of the Jovian satellites, characterize their mineral content; and for the atmosphere of Jupiter, investigate cloud properties and the spatial and temporal variability of molecular abundances. All the optics are gold-coated reflective and consist of a telescope and a grating spectrometer. The balance of the instrument includes a 17-detector (silicon and indium antimonide) focal plane array, a tuning fork chopper, microprocessor-controlled electronics, and a passive radiative cooler. A wobbling secondary mirror in the telescope provides 20 pixels in one dimension of spatial scanning in a pushbroom mode, with 0.5 mr x 0.5 mr instantaneous field of view. The spectral range is 0.7 - 5.2μ resolution is 0.025μ. NIMS is the first infrared experiment to combine both spatial and spectral mapping capability in one instrument.

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Irving M. Aptaker "A Near-Infrared Mapping Spectrometer For Investigation Of Jupiter And Its Satellites", Proc. SPIE 0395, Advanced Infrared Sensor Technology, (30 November 1983); https://doi.org/10.1117/12.935193

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