DGPS (Differential Global Positioning System):

The DGPS experiment will provide calibration of spacecraft attitude updates in all three spacecraft axes, as well as orbit position, orbit velocity, and accurate time updates using the constellation of GPS satellites and specially designed receivers and antenna systems. The antennas are statically mounted to the exterior of the SAC-A structure. Data can be recorded on two separate planes, allowing the determination of the spacecraft attitude and position.

Earth CCD Camera:

This is an instrument partially based on a commercial camera, conditioned to work in space. The main goal of this experiment is to provide pictures for earth's surveillance. The high quality commercial equipment has potential application for small earth resources satellites. A secondary test concept is to use of the CCD camera as a star imager.

Silicon Cell Panels:

Performance testing of Silicon Cell Panels built by the Argentine Solar Energy Division of the National Commission of Atomic Energy. The main objective is to analyze the performance and degradation of the cell's electrical characteristics in a microgravity environment. These panels will provide information about short circuit current, open voltage and electrical power to validate design and performance. A similar panel with the same type of cells is to be tested on the ground and its results correlated with flight data.

NASA's Magnetometer Experiment:

This is both for the scalar measurement of the earth magnetic field and to provide information useful for attitude control. Having a magnetometer in conjunction with a GPS, the satellite becomes a convenient tool for obtaining magnetic information.

Whale Tracker:

A receiver and data handling electronics for tracking the movements of whales about the South Atlantic Ocean.