Instruments

Spacecraft Instrumentation

The five spin-stabilized (spin period = 3 seconds) probes carry identical instruments The instruments being flown are:

Electric field instruments (EFI)
Fluxgate magnetometers (FGM)
Search coil magnetometers (SCM)
Electrostatic analyzers (ESA)
Solid state telescopes (SST)

Mechanical Drawings

Ground Based Instrumentation

All-sky white light imagers (ASI)
Fluxgate magnetometers (GMAGS)