The STAR TRACKER ST400 from Berlin Space Technologies is a Star Tracker with Altitude Accuracy 5 arcseconds (Pitch) to 40 arcseconds (Roll), Mass 250 g (ST400D), 350 g (With Baffle), Slew Rate 1 Degree/sec, Data Update Rate 5 Hz, Supply Voltage 3.7 to 5 V. More details for STAR TRACKER ST400 can be seen below.