HARDWARE / PRODUCTUpdated 24 Jul 2026

NST20-G3 Star Tracker

TY-Space Technology
NST20-G3 Star Tracker

The NST20-G3 is an upgraded, fully autonomous, high-precision, and high-dynamic attitude star tracker designed for spacecraft navigation.

Typed specifications51 values

Discloses 8 of 12 fields engineers filter by in this category (category median 8).

Accuracy, cross-boresight
1 arcsec
datasheet p.1 2 arcsec 3σ, @0.1°/s-0.5% (Pointing)  |  5 arcsec 3σ, @0.5°/s-1.2% (Pointing)  |  1 arcsec pointing, 3 sigma  |  2 arcsec max · 0.1°/s-0.5%, pointing, 3 sigma, <=2 arcsec  +1
Mass
1 200 g
nom. · datasheet p.2 1 200 g device weight 1.2+-0.2kg
Accuracy, about boresight (roll)
6 arcsec
datasheet p.1 16 arcsec 3σ, @0.1°/s-0.5% (Roll)  |  30 arcsec 3σ, @0.5°/s-1.2% (Roll)  |  6 arcsec roll, 3 sigma  |  16 arcsec max · 0.1°/s-0.5%, roll, 3 sigma, <=16 arcsec  +1
Envelope (L×W×H)
L: 140±0.5 B: 120±0.2 H: 272±2
datasheet p.2 L: 140±0.5, B: 120±0.2, H: 272±2 envelope size
Update rate
10 Hz
datasheet p.1 10 Hz min · >=10Hz
Sun exclusion angle
30 °
Sun · datasheet p.1 30 ° min · Sun: better than 30°
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.6 27 V min  |  29 V max  |  28 V as published, mode unspecified  |  27–29 V VIN+, X2  +1
Power consumption
4 W
nom. · Operating Mode · datasheet p.6 4 W operating state, 4.0+-0.5 W per device  |  4 W nom. · Operating State
Data interface
RS-422
datasheet p.1 RS-422 RS422
Operating temperature
-30 °C
min · Operating Temperature Range · datasheet p.4 40 °C max · Operating Temperature Range  |  -30–50 °C as published, mode unspecified  |  15–25 °C best operating temperature range, 20+-5  |  -30–40 °C operating temperature range
Radiation tolerance (TID)
100 krad
as published, mode unspecified · vendor page (catalogue a
Design lifetime
7 years
1000km Orbit · datasheet p.1
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
-30 °C
min · Storage Temperature Range · datasheet p.4 40 °C max · Storage Temperature Range  |  -30–40 °C storage temperature range
Baffle
integrated
inner surface of the baffle is ultra black coating · datasheet p.5
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 supplier19 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)
<1″[3σ]
Attitude accuracy (pointing/rolling) (2)
<6″[3σ]
Update rate
10 Hz
Dynamic performance
5°/s
Sensitivity
5.8Mv,Go.Ref star
Exclusive angle sun
< 25°
Exclusive angle earth
< 20°
Data interface
RS422/CAN
Power consumption
4 W
Supply voltage
28 V
Design life
7years

About

The NST20-G3 star tracker is an upgraded version of the NST10-G1, offering enhanced performance for spacecraft attitude determination. It is a fully autonomous, highly reliable, high-precision, and high-dynamic attitude star tracker. It boasts an attitude determination accuracy of less than 1 arcsecond (3σ) and a dynamic performance of up to 5 degrees per second. The device features a refractive optical design and is built to withstand harsh space environments, with specified vibration tolerances for both flight and qualification, a working temperature range of -30 to 50 degrees Celsius, and radiation resistance up to 100 Krad [Si]. It has a field of view of 15°×15° (effective) and an update rate of 10 Hz. The star tracker also specifies exclusive angles for the Sun (less than 25°) and Earth (less than 20°) to avoid interference. Data communication is handled via RS422/CAN interfaces, and it operates on 28V input voltage with a power consumption of 4W, designed for a 7-year lifetime.

Documentation

Need the full ICD, test reports or a specific revision? Ask the supplier directly.

Source: www.ty-space.net ↗

The rest of the range from TY-Space Technology

All 20 products →