The µSTAR-250 from Space Micro is a Star Tracker that is designed for LEO, MEO, GEO Satellite orbits. It has a field of view of 14 degree and has a core boresight of less than 0.2 sec. This star tracker has a slew rate of less than 5 deg/sec and has an update rate of 10-30 Hz. It requires a DC supply of 5-28 V and has a power consumption of up to 7.5 W. This star tracker supports RS422, SpaceWire, Cameralink and MIL-STD-1553 interfaces. It has a mass of 750 g and measures 4.2 x 3.35 x 10.3 inches. This star tracker is ideal for the attitude rate determination, space situational awareness, long-duration and high-reliability missions.