Infrared detector module test system

A sensor test system is disclosed for testing the operation of infrared detector modules designed to be placed in earth orbit. The system includes an optical scene test generator (OSTG) for generating a scene representative of the earth's surface as seen from a satellite, and an object moving in relation to the earth's surface. Sensor chamber is disposed adjacent the OSTG for storing a detector module to be tested. Detector module is efficient within the sensor chamber to expose detector elements to the optical scene generated by the OSTG.