The ASTRO XP from Jena-Optronik GmbH is a Star Tracker with Altitude Accuracy 0.1 arcseconds, Mass 1.3 Kg, 1.5 Kg, 2.5 Kg, Slew Rate 0.5 to 6 Degree/sec (Angular), Data Update Rate 2, 4, 8 Hz, Field of View 3.3 Degrees. More details for ASTRO XP can be seen below.