NST20-G2 Star Tracker
TY-Space Technology
The NST20-G2 is a fully autonomous, highly reliable, and precise star tracker designed for attitude determination with high dynamic performance and a secondary baffle for sun exclusion.
Typed specifications57 values
Discloses 9 of 12 fields engineers filter by in this category (category median 8).
- Accuracy, cross-boresight
- 20 arcsec @20°/s Pointing · datasheet p.1 20 arcsec 20°/s Pointing | 20 arcsec 20°/s, pointing, 3 sigma | 3 arcsec Pointing | 3 arcsec pointing, 3 sigma
- Mass
- 1 200 g nom. · datasheet p.2 1 200 g | 1 200 g device weight 1.2+-0.2kg
- Accuracy, about boresight (roll)
- 30 arcsec datasheet p.1 200 arcsec @20°/s Roll | 200 arcsec 20°/s Roll | 200 arcsec 20°/s, roll, 3 sigma | 30 arcsec roll, 3 sigma
- Envelope (L×W×H)
- 140×120×268 datasheet p.2 (140±0.5)×(120±0.2)×(268±2) envelope size
- Update rate
- 20 Hz min · datasheet p.1 20 Hz min · >=20Hz
- Max tracking rate
- 20 °/s datasheet p.1 20 °/s dynamic performance @20°/s
- Sun exclusion angle
- 25 ° datasheet p.1 25 ° min · Sun: better than 25°
- Lost-in-space acquisition time
- 2 s max · datasheet p.1 2 s max · acquisition rate, max. <=2s | 5 s max · start-up time, better than 5s
- Supply voltage
- 28 V nom. · datasheet p.7 21 V min | 21 V min · Safe Operating | 29.5 V max | 29.5 V max · Safe Operating +2
- Power consumption
- 3.5 W nom. · Operating State · datasheet p.4 4 W as published, mode unspecified | 3.5 W Operating State | 3.5 W operating state, 3.5+-0.5 W per device
- Data interface
- RS-422 datasheet p.1 RS-422 RS422 | RS-422 | RS-422
- Operating temperature
- -40 °C min · datasheet p.4 45 °C max | -30–50 °C as published, mode unspecified | 0–10 °C best operating temperature range | -40–45 °C operating temperature range
- Radiation tolerance (TID)
- 100 krad as published, mode unspecified · vendor page (catalogue a
- Design lifetime
- 5 years 1,000km Orbit · datasheet p.1 7 years 500km Orbit
- Configuration
- single unit datasheet p.3
- Connector
- X1 (communication): J30J-37ZKN-J; X2 (power): J30J-15ZKN-J datasheet p.8 J30J-37ZKN-J X1 Communication Interface | J30J-15ZKN-J X2 Power Interface
- Survival temperature
- -40 °C min · datasheet p.4 45 °C max | -40–45 °C storage temperature range
- Baffle
- integrated baffle referenced in mounting requirements · datasheet p.15
- Earth exclusion angle
- 20 ° min · Earth: better than 20° · datasheet p.2
- Time-sync (PPS) input
- yes PPS differential input; SYNC pulse · datasheet p.13
Each value is typed with its unit and measurement condition and cites the datasheet page it was taken from. Nothing is guessed: a field that is absent here has not been published by the manufacturer. machine-extracted ✓ checked by NewSpace Market ✓ manufacturer confirmed by the manufacturer.
As published by the supplier18 lines, in the manufacturer's own wording
- Dimensions
- Sensor+Baffle 90×100×268（mm³）
- Mass
- Sensor+Baffle 1200 g
- Optical design
- Lens refracitive
- Environmental
- Vibration (FM) sine 13 g, random 12 grms
- Vibration (Qualification)
- sine 16 g, random 18 grms
- Working temperature
- -30~50（℃）
- Radiation resistance
- 100 Krad [Si]
- Performance
- Field of View 15°×15°[effective]
- Attitude accuracy (pointing/rolling)
- ＜3″[3σ]
- Update rate
- 15 Hz
- Dynamic performance
- 20°/s
- Sensitivity
- 5.8Mv,Go.Ref star
- Exclusive angle
- Sun: ＜ 25°
- Exclusive angle (2)
- Earth: ＜ 20°
- Data interface
- RS422/CAN
- Power consumption
- 4 W
- Supply voltage
- 28 V
- Design life
- 7years
About
The NST20-G2 is an upgraded version of the NST10-G1, offering fully autonomous operation, high reliability, and precision attitude determination. It boasts a pointing/rolling attitude accuracy of less than 3 arcseconds (3σ) and a dynamic performance of 20°/s. A secondary baffle is integrated to ensure optimal performance even at a Sun Exclusive Angle of 25°. The star tracker features a refractive optical design, a 15°×15° effective field of view, and an update rate of 15 Hz. It is designed to withstand harsh space environments, with specified vibration resistance (sine 13g/16g, random 12 grms/18 grms) and radiation resistance up to 100 Krad [Si]. The operating temperature range is -30°C to 50°C. Data communication is handled via RS422/CAN interfaces, and it operates on a 28V input voltage with a power consumption of 4W, offering a 7-year lifetime.
Documentation
Need the full ICD, test reports or a specific revision? Ask the supplier directly.