HARDWARE / PRODUCTUpdated 24 Jul 2026

ST400

Berlin Space Technologies
ST400

The ST400 is a high-precision star tracker developed in collaboration with AAC Hyperion, providing a full and autonomous attitude solution for demanding small satellite missions.

Key figurescomparable across the catalogue

Mass
0.35 kg
Largest dimension
146 mm
Design life
5 years

Normalised to common units so this product can be compared with others in its category. The supplier's own wording is below.

As published by the supplier

Accuracy
5 arcsec
Update rate
5 Hz
Limiting magnitude
6.0
Sun exclusion angle
40°
Data interface
UART (TTL), RS422 (optional)
Mass
350 g
Dimensions
74x74x146 mm
Design life
5 years
Space heritage
since 2015

About

The ST400 is a high-precision star tracker, an advanced version of the ST200, developed and built in collaboration with AAC Hyperion. It is designed to deliver a full and autonomous attitude solution, making it suitable for demanding small satellite missions. The device boasts an accuracy of 5 arcseconds and an update rate of 5Hz. It can track stars up to a limiting magnitude of 6.0 and has a sun exclusion angle of 40°. For data communication, it offers a UART (TTL) interface, with RS422 available as an optional interface. The ST400 has a mass of 350g and compact dimensions of 74x74x146mm. It is designed for a life span of 5 years and has flight heritage dating back to 2015.

Documentation

Need the full ICD, test reports or a specific revision? Ask the supplier directly.

Source: www.berlin-space-tech.com ↗

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