APS High precision Star Sensor (ST-APS2-2) adopts APS flat detector with digital signal processing and integrative structure, has the characteristics of light weight, small volume and low power. It has already been used for GEO, MEO and LEO satellites and other spacecrafts. Since first flight in May., 2012, with trouble-free operation time in-orbit for more than 30 months.

Optical axis oriented direction precision: 5’’/3σ

Update rate: 4Hz

Dynamic performance: 0.5°/s

Field of view: 20° × 20°

Star sensing: 5.5Mv

Operating temperature range: -20℃~0℃

Mass：1.0kg

Power consumption: 1.56W

Dimension: 264mm × 136mm × 136mm

External interface: RS422

Design lifetime: 5 years

Lead time: T0+16 months