2.2.0 spase://SMWG/Instrument/ISEE1/VES ISEE 1 Vector Electron Spectrometer (VES) 2019-05-05T12:34:56Z Two triaxial systems of 127-deg cylindrical electrostatic analyzers were used to make three-dimensional measurements of the electron distribution function. There were three modes of operation, with the following nominal energy ranges: solar wind, 7 to 500 eV; magnetosheath, 10 eV to 2 keV; and magnetotail and solar, 105 eV to 7.05 keV. The energy resolution (delta E/E) was 0.07. The entire set of six simultaneous spectrometer measurements was taken while the satellite rotated through 60 deg. Each spectrometer consisted of a curved-plate analyzer and two channeltron detectors. spase://SMWG/Person/Keith.W.Ogilvie PrincipalInvestigator NSSDC's Master Catalog https://nssdc.gsfc.nasa.gov/nmc/experiment/display.action?id=1977-102A-02 Information about the Vector Electron Spectrometer on the ISEE 1 spacecraft. ElectrostaticAnalyser Vector Electron Spectrometer (VES) spase://SMWG/Observatory/ISEE1