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Instrument: SSJ : Electron Spectrometer J (SSJ)
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Associated Platforms
DMSP 5D-2/F13

Related Data Sets
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[Source: National Space Science Data Center, ]

Special Sensor J (SSJ) was an electron spectrograph with one fixed cahnnel and one stepping channel. The channels detected energetic electrons over ranges of energies associated with visible aurora. The fixed channel was 6 keV and the stepping channel cycled through eight energy thresholds: 54, 98, 219, 600, 1400, 3540, 8200, and 1970 eV. The data sample was taken approximately every second. The field-of-view was 3 degrees by 12 degrees.

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Instrument Logistics
Instrument Owner: Department of Defense-Department of the Air Force (United States)