The T3 Star Tracker from TERMA is a Star Tracker whose optical head is based on a Faintstar-2 CMOS active pixel sensor. It has an accuracy of 10 arcsec and a maximum update rate of 5 Hz. This star tracker has a slew rate of less than 1.5 degrees/sec and an acquisition time of 10 s. It has a circular field of view of 20 degrees and an APS resolution of 1024 x 1024 pixels. The star tracker features aspherical, radiation-hard optics and supports CAN or RS422 spacecraft interfaces for TM/TC. It requires a supply voltage of 5-12 V and has a power consumption of 2 W. The star tracker has a mass of 350 g and measures 60 x 60 x 100 mm. It has a lifetime of over 5 years and is ideally suited for nano- and microsatellite missions.
