Table 1 Characteristics of two generations of star sensors [10, 13]
From: Optical system design of star sensor and stray light analysis
1st generation | 2nd generation | |
|---|---|---|
Field of View | Wide | not very wide |
Power | > 20 W | < 5 W |
Weight | > 20 kg | < 4 kg |
Accuracy | 20 arc sec | 1 arcsec |
Minimum Stars Needed to Track | 1 star | Minimum 3 stars |