Star Trackers

Focusing on fully autonomous attitude determination with high accuracy

SATELLITE STAR TRACKERS FOR MISSIONS FROM LEO TO DEEP SPACE EXPLORATION

Our series of star trackers support space missions ranging from satellites with short mission lifetimes to satellites having long lifetimes and stringent requirements for radiation tolerance. Complete in-house test and manufacturing facilities in Denmark ensure quality control, and high performance.

Autonomous high-accuracy attitude determination

Superior radiation resistance

Flight proven with over 200 satellites in orbit using Terma Star Trackers

T1 Star Tracker

SUITABLE FOR HIGH RADIATION MISSIONS

The T1 Star Tracker is based on the sensor chip Faintstar-2 which is a CMOS Active Pixel Sensor with a suite of integrated on-chip functionality supporting a completely new class of miniaturized high-performance star sensors. The T1 is built with Class 1 or 2 components and is suitable for high radiation missions, e.g., geostationary satellites with electrical orbit raising and 15 years in GEO. T1 has a separated baffle and camera for best thermal stability, and a separate data processing unit.

T1 Data Sheet

T3 Star Tracker

SUITABLE FOR MICROSATELLITE MISSIONS

T3 is a very compact star tracker with high accuracy and excellent thermal stability ideally suited for microsatellite missions designed for a lifetime of 5 years in LEO. As a scaled-down version of the T1 Star Tracker, the T3 Star Tracker has a smaller optical system and computer processing unit that is based on highly reliable COTS components. The built-in processing unit in the T3 Star Tracker accommodates the star catalogue and software algorithms for autonomous attitude acquisition and tracking.

T3 Data Sheet

Dynamic Optical Ground Support Equipment (DOGSE)

OPTICAL GROUND SUPPORT FOR T1 AND T2

The Dynamic Optical Ground Support Equipment (DOGSE), designed for T1 and T3 Star Trackers, offers a streamlined installation process and user-friendly operation. The DOGSE is highly compact and very low mass making it suited for both open- and closed-loop star tracker tests. The DOGSE can be adopted to fit any baffle, providing repeatable and stable mounting required for closed loop testing.

DOGSE Data Sheet

"Terma's proven track record in high-reliability space systems and their understanding of mission-critical requirements made them the right partner for this pioneering mission."

Simone Centuori

Indra Space Missions Director

HERITAGE

With 25 years of experience in star tracker technology, Terma has established itself as a leader in providing reliable equipment. Our star sensors consistently deliver precise navigational data, earning their status as trustworthy tools in the space industry. They are already deployed on high-profile missions including ESA’s CryoSat-2, which continues delivering critical data on Earth’s ice sheets and sea levels today.
T1 and T3 Star Trackers were developed in close partnership with ESA, and combines proven technology with next-generation performance.

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