HST-A1 Star Tracker
TY-Space Technology
The HST-A1 is a fully autonomous, high-precision star tracker offering ultra-high pointing accuracy (up to 0.3 arcseconds, 3-sigma) for satellite attitude determination.
Typed specifications97 values
Discloses 10 of 12 fields engineers filter by in this category (category median 8).
- Accuracy, cross-boresight
- 0.3 arcsec typ. · Pointing, 3σ, @0.1°/s · datasheet p.1 0.3 arcsec | 0.3 arcsec @0.1°/s, Pointing, 3σ | 1 arcsec @0.5°/s, Pointing, 3σ | 1.5 arcsec @1.0°/s, Pointing, 3σ +8
- Mass
- 730 g typ. · baffle · datasheet p.3 730 g ±0.05, Device Weight (baffle) | 4 200 g ±0.3, Device Weight (body) | 730 g Baffle Weight | 730 g baffle, 0.73±0.05kg +4
- Accuracy, about boresight (roll)
- 3 arcsec typ. · Roll, 3σ, @0.1°/s · datasheet p.1 3 arcsec | 3 arcsec @0.1°/s, Roll, 3σ | 15 arcsec @0.5°/s, Roll, 3σ | 20 arcsec @1.0°/s, Roll, 3σ +8
- Envelope (L×W×H)
- 155±2 Height: 297±5 mm Envelope Size (baffle) · datasheet p.3 140±1×130±1 Height: 223±5 mm Envelope Size (body) | 155±2, Height: 297±5 envelope size, baffle | 140±1×130±1, Height: 223±5 envelope size, body
- Update rate
- 10 Hz ≥10Hz · datasheet p.1 10 Hz min · ≥10Hz
- Max tracking rate
- 1.5 °/s 1.5°/s: Trackable · datasheet p.2 1.5 °/s Trackable | 1.5 °/s max · Trackable
- Sun exclusion angle
- 30 ° better than, Sun exclusion · datasheet p.1 30 ° Sun | 30 ° min · Sun: better than 30°
- Field of view
- 5.5 ° ≥5.5°×5.5° · datasheet p.1 ≥5.5°×5.5° Field of View | 5.5 ° min · ≥5.5°×5.5°
- Lost-in-space acquisition time
- 5 s Better than · datasheet p.1 5 s max · start-up time, better than 5s
- Supply voltage
- 28 V nominal · datasheet p.9 32 V max | 26 V min | 28 V Supply voltage | 26 V min +3
- Power consumption
- 3.5 W typ. · operating state · datasheet p.7 3.5 W | 3.5 W ±0.5, Operating State | 3.5 W ±0.5, Power Consumption (Long Term Operating Mode) | 3.5 W Operating State +1
- Data interface
- CAN datasheet p.10 LVDS Camera-Link 1/2, LVDS standard, X3/X4 | CAN dual CAN2.0B, 500kbps | RS-422 RS422, 115200bps | RS-422 +1
- Operating temperature
- 20 °C Best Operating Temperature Range (nominal) · datasheet p.7 40 °C Operating Temperature Range (max) | -30 °C Operating Temperature Range (min) | -10–30 °C as published, mode unspecified | 15–25 °C best operating temperature range, 20±5 +1
- Radiation tolerance (TID)
- 50 krad as published, mode unspecified · vendor page (catalogue a
- Design lifetime
- 7 years @LEO Orbit · datasheet p.1 7 years LEO Orbit
- Configuration
- single unit body with lens, image sensor and processing boards; separate … · datasheet p.9
- Connector
- X1, X2: J30J-15ZKNP8-J; X3, X4: 12226-1150-00FR datasheet p.11 J30J-15ZKNP8-J X1 | J30J-15ZKNP8-J X1 Electrical Connector | J30J-15ZKNP8-J X2 | J30J-15ZKNP8-J X2 Electrical Connector +4
- Survival temperature
- 30 °C Storage Temperature Range (max) · datasheet p.7 -10 °C Storage Temperature Range (min) | -10–30 °C storage temperature range
- Baffle
- integrated lens baffle, inner surface ultra black coating · datasheet p.8
- Earth exclusion angle
- 30 ° min · Earth: better than 30° · datasheet p.2
- Time-sync (PPS) input
- yes PPS input, single-ended or differential; SYNC pulse · datasheet p.18
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
- Lens dimensions
- 140x125x212 mm3
- Sensor+baffle dimensions
- 155x155x297 mm3
- Mass
- 4700 g
- Optical design
- Refractive
- Vibration (FM)
- sine 13 g, random 12 grms
- Vibration (Qualification)
- sine 16 g, random 18 grms
- Working temperature
- -10 to 30 C
- Radiation resistance
- 50 Krad [Si]
- Field of view
- 5.5x5.5 deg [effective]
- Attitude accuracy (pointing/rolling)
- <0.3" [3sigma] / <5" [3sigma]
- Update rate
- 10 Hz
- Slew rate
- 1.5 deg/s
- Sensitivity
- 10 Mv
- Sun exclusive angle
- < 30 deg
- Earth exclusive angle
- < 30 deg
- Data interface
- RS422/CAN
- Power consumption
- 3.5 W
- Supply voltage
- 28 V
- Design life
- 7 years
About
The HST-A1 Star Tracker is a fully autonomous, high-precision attitude sensor designed for satellite platforms requiring exceptional pointing accuracy. It uses a refractive optical design with a 5.5×5.5 degree effective field of view and can detect stars down to 10Mv sensitivity, enabling reliable star pattern recognition and attitude solutions in orbit. It delivers attitude accuracy of <0.3 arcsec (3-sigma) in pointing and <5 arcsec (3-sigma) in roll, updating at 10 Hz with slew-rate tolerance of 1.5 deg/s. It is rated for 50 Krad [Si] radiation resistance, operates from -10C to 30C, and withstands qualified/flight vibration loads (13g sine/12 grms random FM; 16g sine/18 grms random qualification). It communicates via RS422/CAN, runs on 28V while consuming 3.5W, and has a 7-year rated lifetime – suited for long-duration Earth observation and other precision-pointing missions.
Documentation
Need the full ICD, test reports or a specific revision? Ask the supplier directly.