A star sensor, also known as a star tracker, serves as a critical component of a spacecraft’s attitude determination system. By capturing images of stars and comparing them with an onboard star catalog, it accurately calculates the spacecraft’s orientation and position. The price of a star sensor depends on its performance and intended application. For instance, compact star sensors provide cost-effective solutions for CubeSats, while high-end models meet the demanding requirements of deep-space missions.
Compact Star Sensors
Designed specifically for CubeSats and other small satellites, these sensors are small, lightweight, and energy-efficient. Since CubeSats are typically used for low-cost missions, these sensors are relatively affordable, with prices ranging from $20,000 to $100,000. Examples include TY-Space’s PST3S-H1 and Rocket Lab’s ST-16HV.
Mid-Range Star Sensors
Mid-range star sensors cater to Earth observation satellites and commercial communication satellites, requiring higher precision and reliability. These devices typically cost between $100,000 and $500,000.
High-End Star Sensors
Built for deep-space exploration, high-end star sensors offer exceptional precision, radiation resistance, and durability for long-term operations. Their prices generally exceed $500,000.
Accuracy: Accuracy is a core performance metric for star sensors. High-precision models (achieving arc-second accuracy) require sophisticated sensors and algorithms, driving up costs. Deep-space missions often demand far greater accuracy than near-Earth orbit tasks.
Size and Weight: Small satellites impose strict size and weight constraints. Designing compact star sensors requires advanced engineering, which increases costs.
Radiation Resistance: The harsh radiation environment in space poses a threat to electronic components. High-end star sensors use costly radiation-hardened materials and components to ensure stable, long-term performance.
Power Consumption: Small satellites prioritize low-power designs. Optimizing circuits and algorithms to reduce power consumption raises research and development costs.
Mission Duration: Long-duration missions demand more reliable components and extended warranties, which further elevate costs.
When selecting a star sensor, several factors should be carefully considered:
Mission Type: Determine whether the sensor is for low-orbit small satellites, Earth observation, or deep-space exploration.
Budget: Low-cost missions may opt for affordable models, while high-end missions require premium, high-performance equipment.
Technical Specifications: Evaluate accuracy, power consumption, size, and radiation resistance.
Supplier Support: Choose a supplier with reliable after-sales service and a strong reputation.
Since star sensors are highly specialized equipment, their prices are typically not publicly listed. Buyers should visit suppliers’ official websites or contact them via email to obtain specific quotes.
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TY-Space Technology (Beijing) Ltd. is professional focusing on advanced attitude optical sensors, especially Star Trackers for space industry.
