PST3S-K4 Star Tracker
TY-Space Technology
A micro-miniature, radiation-resistant star tracker with a deployment baffle, providing high-accuracy attitude determination for small satellites.
Key figurescomparable across the catalogue
- Mass
- 0.06 kg
- Power
- 0.9 W
- Largest dimension
- 75.7 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
- Dimensions (Sensor+Baffle)
- Baffle Folded: 40×40×34.6 (mm³)
- Dimensions (Sensor+Baffle) (deployed)
- Baffle Deployed: 40×40×75.7 (mm³)
- Mass (Sensor+Baffle)
- 60 g
- Optical design (Lens)
- refractive
- Vibration (FM)
- sine 13 g, random 12 grms
- Vibration (Qualification)
- sine 16 g, random 18 grms
- Working temperature
- -40~40 (℃)
- Radiation resistance
- 30 Krad [Si]
- Field of view
- 14°×15.8° [effective]
- Attitude accuracy (pointing)
- <5″ [3σ]
- Attitude accuracy (rolling)
- <50″ [3σ]
- Update rate
- 10 Hz
- Dynamic performance
- 2°/s
- Sensitivity
- 5.8Mv, Go.Ref star
- Exclusive angle (Sun)
- <35°
- Exclusive angle (Earth)
- <30°
- Data interface
- RS422/CAN
- Power consumption
- 0.9 W
- Supply voltage
- 5 V
- Design life
- 5 years
About
The PST3S-K4 is a micro-miniature star tracker featuring a deployable baffle for stray-light suppression, designed for space-saving installation on small satellites. It uses a refractive lens optical design and offers low power consumption of 0.9W. The unit is radiation resistant, tolerating 30 Krad [Si] total dose. With the baffle folded, the sensor+baffle assembly measures 40×40×34.6mm³, expanding to 40×40×75.7mm³ with the baffle deployed, and has a mass of 60g. It has an effective field of view of 14°×15.8° and provides pointing/rolling attitude accuracy of <5″/<50″ (3σ). The update rate is 10 Hz, with dynamic performance up to 2°/s and sensitivity of 5.8Mv (Go.Ref star). Exclusion angles are <35° from the Sun and <30° from the Earth. It communicates via RS422/CAN data interface, operates on a 5V input voltage, and functions across a working temperature range of -40 to 40°C. Vibration tolerance is sine 13g/random 12 grms (flight model) and sine 16g/random 18 grms (qualification). The rated life time is 5 years.
Documentation
Need the full ICD, test reports or a specific revision? Ask the supplier directly.