Instrument 9 germanium detectors (7.1-cm dia.
x 8.5 cm) Cooled
to 75 K with Sunpower cooler
Grid pitches from 34 microns to
2.75 mm
1.55-m grid separation
Solar Aspect System to <1
arcsecond
Roll Angle System to ~1
arcminute
Weight 130 kg
Power 125 watts
Telemetry 12 Gbits in 2 days
Spacecraft Spinning at 12 - 20 rpm
Pointing to within 0.1° of Sun
center
Launch
Vehicle Pegasus XL from
KSC
Orbit 38° inclination
600 km altitude, >3-year
life
Launch
Date March 2001
Operations 2 years, 3 years highly
desirable