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Electron Spectrometer (SSJ/2)

NSSDCA ID: 1974-063A-03

Mission Name: DMSP 5C/F1
Principal Investigator:Dr. Paul L. Rothwell


Special Sensor J 2 (SSJ/2) was an improved version of the SSJ. It consisted of and electron spectrograph using a single stepping channel with six energy ranges. Nominal energy steps were 0.3, 0.68, 1.6, 3.5, 7.9, and 18 keV. The sampling rate was 0.0922 seconds per energy step, and the field of view was a 30 degree anti-earth cone.

Alternate Names

  • DMSP5C-F1/SSJ/2
  • SSJ/2


  • Space Physics: Ionospheric Studies

Additional Information

Questions and comments about this experiment can be directed to: Coordinated Request and User Support Office



NameRoleOriginal AffiliationE-mail
Dr. Paul L. RothwellPrincipal InvestigatorPhillips Laboratory (nee USAF Geophysics Lab, nee Cambridge Labs)
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