The MAG Instrument consists of nine electronics boards inside an electronics
box, all mounted on the spacecraft top deck, and two sensors placed at the
end of oppositely placed booms.
The electronics box is mounted nearly dead center on the top deck of the spacecraft
platform which is, in turn, covered by a thermal blanket to help regulate the
temperature of the spacecraft. The top deck of the spacecraft faces the sun.
Integration of the ACE spacecraft with the solar panels provides a clear
indication of the size of the spacecraft. The booms which hold the sensors
of the magnetometer instrument away from the body of the spacececraft are
seen folded across the top of two solar panels. The magnetometer's
electronics box is mounted in the center of the top deck, under the
gold-colored thermal blanket.
When deployed, the magnetometer booms hold the sensors 4.3 meters from the
center of the ACE spacecraft.