The ST400 is the bigger brother of the successful ST200 star tracker. It uses the same proven electronics but uses a different opto-mechanics. The ST400 trades an increased resolution for being a little larger than the miniature ST200. Like ST200, the ST400 has been developed in cooperation with Hyperion Technologies B.V. The ST400 delivers a full and autonomous attitude solution and is your attitude sensing solution for missions with demanding accuracy requirements.

Characteristics:

• Accuracy: 5 arcsec (RMS)

• Tracking Update: 5 Hz

• Limiting Magnitude: 6.0

• Data Interfaces: RS422

• Supply Voltage: 3.7-5.0 V

• Power Consumption: 670 mW @3.7 V

• Operating Temperature: -20°C to +40°C

• Dimension (w/o Baffle): 48 x 57 x 91 mm³

• Dimension (w/ 40° Baffle): 74 x 74 x 146 mm³

• Mass (w/o Baffle): 250 g

• Mass (40° Baffle): 350 g

• Design Life: 5 years LEO

• Space Heritage: Yes

• Radiation Test: 11 krad (Proton 130 MeV source)