HYDRA ACCESS Star Tracker
Sodern
Most affordable Hydra-range star tracker: software embedded in satellite OBC, up to 3 optical heads, 2.8 arcsec XY precision, 8-week delivery, batch manufacturing.
Technical specifications
- Precision XY
- 2.8 arcsec
- Temporal Noise (XY/Z)
- 2.3 / 18 arcsec
- Architecture
- No dedicated EU — software on satellite OBC
- Optical Heads
- Up to 3
- Acquisition Robustness
- <=6 deg/s
- Tracking Robustness
- <=8 deg/s
- Orbital Range
- LEO, MEO, GEO, Deep Space
- Sun Exclusion Angle
- 26 deg
- Design Lifetime
- 10 years LEO / 18 years GEO
- Lead Time
- 8 weeks (batch manufactured)
About
The Sodern HYDRA ACCESS is the most affordable version of the Hydra star tracker range, designed for cost-sensitive missions. Unlike the baseline HYDRA, it has no dedicated electronic unit — the attitude determination software is embedded in the satellite’s onboard computer. Supports up to 3 optical heads connected to the OBC. Batch manufacturing with 8-week delivery enables fast program schedules. Standard testing includes vibration, thermal vacuum, and calibration. Shares the same 2.8 arcsec XY precision and 26-degree sun exclusion angle as the baseline HYDRA, for orbital regimes from LEO to deep space.
Documentation
No public datasheet yet — request the datasheet / ICD from the supplier.
