Image of Terma - T1 Satellite Star Tracker on the satsearch marketplace

Key highlights

The Terma T1 Star Tracker is a star sensor built on 25 years of experience in satellite star tracker technology and is suitable for high radiation missions.

The Terma T1 Star Tracker is based on the Faintstar-2 sensor, which includes a suite of integrated on-chip functionality supporting a completely new class of miniaturized high-performance star trackers.

The T1 Star Tracker is designed with class 1 components, making it the best option for high radiation missions, such as geostationary satellites with electrical orbit raising, and can last 15 years in GEO.

It has a separated baffle and camera for the best thermal stability, along with a separate data processing unit.

Features   

  • Radiation-hardened aspherical optics with a large aperture, offering exceptional stray light attenuation.
  • Fully separated baffle and camera for the best thermal stability.
  • Kinematic mounting legs that ensure compatibility to any S/C panel CTE.
  • Significantly reduced recurrent cost at larger quantities
  • Hosted software solution optional
  • Mass 450 g
  • Survival Temperature (qualification limits) -40 °C to +70 °C

 

Flight heritage

Heritage

With 25 years of expertise in star tracker satellite technology, Terma has become a leading provider of dependable equipment. Our star trackers are renowned for delivering accurate navigational data, solidifying their reputation as trusted tools in the space industry.

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Last updated: 2025-08-19

T1 Satellite Star Tracker

9TRL
Image of Terma - T1 Satellite Star Tracker on the satsearch marketplace

Downloads

Technical specs

field of view accuracy
2.1 arcsec (Spatial Error (FOV) 3σ)
time to first acquisition
10 s
mass
450 g (electronic unit)
310 g (camera head)
height
40 mm
68 mm (optical head)
width
100 mm
length
100 mm
diameter
92 mm (optical head)
field of view
20 deg
lifetime
12 years in LEO @ 1000km; 15 years in GEO
survival temperature
-40 to 70 C
operating temperature
-40 to 30 C
supply voltage
5 V
update rate
< 10 Hz
data interface
SpaceWire, 80 Hz
power consumption
0.8 W

Export

  • Click here to add the Terma - T1 Satellite Star Tracker to the Valispace engineering tool from satsearch
  • Click here to add the Terma - T1 Satellite Star Tracker to Lynapse Studio by Spacebackend
  • Click here to add the Terma - T1 Satellite Star Tracker to 360 by IENAI

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