NXSS3v50
Flight heritage
Dual-use
Eagle Plus
High Accuracy CubeSat Sun Sensor
Eagle Plus excels with high accuracy, high precision, fast update rate, low power consumption and smart functions all integrated into a miniature and lightweight design.
| Lead time: | <7 weeks |
| Price: | from 1600€ |
High-accuracy sun sensing for CubeSats, SmallSats, and rovers
Small size
Eagle Plus was engineered to be as small as possible
29,5 x 11,5 x 6,5 mm
High accuracy
Designed for high accuracy
Accuracy
< ±0,1°
at 3σ
High precision
Bridging the gap between sun sensors and star trackers
Precision
0,0015°
at 1σ
Fast integration
Plug & Fly
Eagle Plus was designed to be easy to integrate, saving you a lot of time.
Bus
Protocol
Reference Python scripts included
Low power consumption
Minimal impact on power budget
Power consumption (constant)
0,015 W
Sun sensor Eagle Plus operates independently of the onboard computer. All calculations are performed by the built-in microcontroller, giving you calibrated information about the position angles in two axes. You can then define parameters and corrections for measuring and processing data over time.
Eagle Plus is supplied in a fully space-qualified state, having undergone all essential environmental tests necessary for technologies ready for space flight.
Fast integration with included Python Integration Toolkit
~/needronix/eagle-plus-toolkit
Bring up Eagle Plus faster with ready-to-use Python scripts that help your team move from first connection to real sensor readout. Instead of starting from zero, engineers get a practical integration starting point for bench testing, FlatSat validation, debugging, and ADCS software integration.
Verify communication immediately
Check the serial connection, receive a ping response, and identify the connected Eagle Plus sensor before deeper integration.
Read real sensor data faster
Access practical readouts including X/Y angles, irradiation, voltage, temperature, uptime, and status.
Accelerate bench and FlatSat testing
Use scripts the engineering team can run, inspect, and adapt during early hardware bring-up and system validation.
Reduce ADCS integration risk
Start from practical examples backed by Needronix documentation and engineering support.
Sample, Hold & Read
The SHR feature enables instant sun position "snapshots" from all utilized Eagle Plus sun sensors in one command. This highly requested function facilitates efficient data retrieval, enhancing the sensor's overall utility and versatility.
Health statistic data
Non-magnetic construction
Integrated temperature and power bus voltage sensors
Factory calibrated
Tested and calibrated in our state-of-the-art test facility
To deliver reliable sun vector data, each Eagle Plus sun sensor undergoes rigorous calibration and exceptionally precise characterization within our proprietary test facility, co-developed with the European Space Agency.
±0,01°
Zero position alignment accuracy
Bi-directional repeatability
Guaranteed ±0.0006 degrees
Newport motors
Integrated reference encoder
AM0
Solar simulator
Save space inside your nanosatellite
Eagle Plus can fit between the solar panels. By mounting these sensors in underutilized areas such as between the solar panels, you not only enhance the efficiency of your satellite but also save valuable space for additional payloads.
Applications
Accurate sun position determination
CubeSat attitude determination
CubeSat solar panel positioning
Nanosatellites, satellite constellations, rovers, balloons, UAVs
Pricing
3-5 units
Small batch
2100 €
per unit
15% discount on order for universities and research institutes applicable.
6-8 units
Standard order quantity
1900 €
per unit
15% discount on order for universities and research institutes applicable.
9+ units
Bulk procurement
Get in touch
15% discount on order for universities and research institutes applicable.
Specifications
Performance
| Field of View | 110° x 110° |
| Precision (1σ) | 0,0015° |
| Accuracy (3σ) | < ±0,1° |
| Update Rate | 166 Hz |
| Albedo Detection | Partial |
| Sample & Hold Function | Yes |
Mechanical
| Dimensions | 29,5 x 11,5 x 6,5 mm |
| Mass | 5 g |
Electrical
| Power Supply | 3,3 V |
| Power Consumption (Constant) | 0,015 W |
| BUS | RS485 |
| Communication Protocol | CSP |
Environmental
| Operation Temperature | -45 °C to +85 °C |
| TVC 100 Cycles | -70 °C to +110 °C |
| Radiation Tolerance | >20 krad(Si) |
Resources
Interface control documents
3D models
User manuals
Request information
Fill out the form below and our team will get back to you within 24 hours.
Comparison to Eagle
Eagle Plus
High accuracy. High precision.
Spacecraft Type
CubeSat - SmallSat
Dimensions
29,5 x 11,5 x 6,5 mm
Mass
5 g
Precision (1σ)
0,0015°
Accuracy (3σ)
< ±0.1°
Update Rate
166 Hz
BUS
RS485
Connector
Molex Picoblade (4 pin)
Power Consumption
0,015 W
Sample & Hold Function
Yes
Flight Heritage
Since 2025
Eagle
Miniature. Efficient. Lightweight. Precise.
Spacecraft Type
1-3U CubeSat
Dimensions
15 x 15,5 x 4,6 mm
Mass
3 g
Precision (1σ)
0,09°
Accuracy (3σ)
< ±0.15°
Update Rate
10 Hz
BUS
I2C
Connector
Direct ribbon (6 wire)
Power Consumption
0,007 W
Sample & Hold Function
No
Flight Heritage
Since 2017
Looking for a sun sensor for your ADCS?
Get in touch for our CubeSat ADCS developers partnership opportunities for enhanced collaboration.