The Sagitta star tracker offers arc second range pointing accuracy to CubeSats. The custom algorithms are optimized for accuracy, robustness and low computational cost. The star tracker has a built-in baffle to reduce the effect of stray light. The system is compact and easy to interface in CubeSats and large satellites.

Key features:

  • Tracks stars up to magnitude 6
  • Tracks up to 32 stars
  • Lost-in-space availability: >99% of the night sky
  • Baffle sun rejection angle: 40 deg
  • Lens is radiation shielded

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Last updated: 2021-10-19

Sagitta Star Tracker



update rate
5 Hz
50 mm
95 mm
45 mm
5 V
attitude knowledge about boresight
10 arcsec (1 sigma)
attitude knowledge cross boresight
2 arcsec (1 sigma)
data interface
nominal power consumption
~1300 mW


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