Star Trackers

36 Star Trackers for Space Applications from 19 manufacturers listed on SatNow

Star Trackers for space applications from multiple manufacturers are listed on SATNow. Use the filters to select products based on your requirement. View product details, download datasheets, compare products, get quotes and pricing for matching products. SATNow has compiled this list of products specifically for Space and Satellite Applications.

SKU:ST200
Satellite Type:
CubeSat
Altitude Accuracy:
30 to 200 arcseconds
Mass:
42 g
Slew Rate:
0.3 to 0.6 Degree/sec
Data Update Rate:
5 Hz
Supply Voltage:
3.6 to 34 V
Power Consumption:
0.37 to 1 W
Radiation Tolerance:
9 kRad
Interface:
RS-485, RS-422, TTL, UART, I2C
Space Heritage:
Yes
Operating Temperature:
-20 to 40 Degree C
more info
SKU:ST-1
Satellite Type:
CubeSat
Altitude Accuracy:
1.5 arcseconds (Dynamic), 80 arcseconds (Solar Inhibition), 21 arcseconds (Field Of View)
Mass:
108 g
Slew Rate:
1.5 Degree/sec
Data Update Rate:
5 Hz
Power Consumption:
1.2 W
Interface:
RS-422, LVDS, I2C
Operating Temperature:
-30 to 40 Degree C
more info
Altitude Accuracy:
10 to 40 arcseconds
Slew Rate:
1 to 2 Degree/sec
Data Update Rate:
8 Hz
Supply Voltage:
28 to 70 V
Power Consumption:
14 to 24 W
Space Heritage:
Yes
Operating Temperature:
-10 to 50 Degree C
more info
SKU:Sagitta Star Tracker
Satellite Type:
CubeSat
Altitude Accuracy:
2 arcseconds (Cross Boresight) to 10 arcseconds (About Boresight)
Data Update Rate:
5 Hz
Field of View:
40 Degree
Supply Voltage:
5 V
Power Consumption:
1.3 W
Interface:
RS-485
more info
Description:Autonomous Star Tracker for CubeSats or other sophisticated Nano Satellites
Satellite Type:
CubeSat, NanoSat
Altitude Accuracy:
10 arcseconds (Pitch) to 70 arcseconds (Roll)
Mass:
40 g (With UART), 160 g (With Baffle)
Slew Rate:
1 Degree/sec
Data Update Rate:
5 Hz
Supply Voltage:
3.7 to 5 V
Power Consumption:
0.55 to 0.67 W
Radiation Tolerance:
11 kRad
Interface:
UART, RS-422
Operating Temperature:
-20 to 40 Degree C
more info
SKU:Standard NST Star Tracker
Satellite Type:
NanoSat
Altitude Accuracy:
6 arcseconds (Cross Boresight) to 40 arcseconds (About Boresight)
Mass:
350 g
Data Update Rate:
5 Hz
Field of View:
10 x 12 Degree
Supply Voltage:
5 to 28 V
Interface:
RS-422, RS-485
Space Heritage:
Yes
Operating Temperature:
-20 to 50 Degree C
more info
Description:Miniature Star Tracker designed for low power consumption, in a small form factor
Satellite Type:
CubeSat
Altitude Accuracy:
0.02 to 0.06 Degree
Mass:
47 gms
Slew Rate:
0.3 Degree/sec
Data Update Rate:
Up to 1 Hz
Field of View:
42 to 59.4 Degrees
Supply Voltage:
3.3 V
Power Consumption:
271 mW(Peak power)
Radiation Tolerance:
24 kRad
Interface:
CAN, UART, RS-485, I2C
Operating Temperature:
-35 to 80 Degree C(Thermal)
more info
SKU:Star Tracker - KAIROSPACE
Satellite Type:
CubeSat, NanoSat
Altitude Accuracy:
5 arcseconds (Pointing) to 60 arcseconds (Rolling)
Mass:
197 g
Slew Rate:
5 Degree/sec
Data Update Rate:
10 Hz
Supply Voltage:
5 V
Power Consumption:
0.7 to 1.2 W
Interface:
RS-485, CAN
Space Heritage:
Yes
Operating Temperature:
-30 to 40 Degree C
more info
SKU:A-STR
Altitude Accuracy:
8.25 to 11.1 arcseconds
Mass:
3550 g
Slew Rate:
2 Degree/sec
Data Update Rate:
4 Hz, 10 Hz
Supply Voltage:
20 to 50 V
Power Consumption:
8.9 to 13.5 W
Interface:
RS-422
Space Heritage:
Yes
Operating Temperature:
-30 to 60 Degree C
more info
SKU:ST-16RT2
Altitude Accuracy:
5 to 55 arcseconds
Mass:
158 g (NO BAFFLE), 185 g (SHORT BAFFLE), 235 g (LARGE BAFFLE)
Slew Rate:
3 Degree/sec
Data Update Rate:
2 Hz
Field of View:
7.5 x 10 Degree
Supply Voltage:
9 to 34 V
Power Consumption:
0.5 to 1 W
Interface:
RS-485
Space Heritage:
Yes
Operating Temperature:
-40 to 50 Degree C
more info

What is a Star Tracker?

Star trackers or star sensors are optical devices that are used by satellites as a navigational tool to determine their orientation/attitude to the stars. The positions of stars are measured using a camera, photocells, and other onboard processing systems which identify the images and process the measured position in the reference frame of the spacecraft. 

There are around 50-60 navigational stars that have been mapped by astronomers and are primarily used to determine the satellite’s position. Star trackers can scan the starscape to pick out stars and constellations and compare them with these pre-defined navigational stars. But for complex missions such as the Mars mission, the entire starfield database has to be referenced to determine the orientation of a spacecraft.

Star trackers are primarily used for the attitude and orbit control systems of spacecraft but they have temporary outages due to interference effects of light reflecting from the satellite’s surfaces or exhaust plumes during propulsion sequences or by strong light from sources such as the sun, or the sun’s reflection off parts of the spacecraft. Therefore to reduce these effects, star trackers work in tandem with gyroscopes, as the latter provides temporary, and attitude information during star tracker outages. Sometimes two or more star trackers are used for redundancy or to increase the accuracy so that a spacecraft will have more accurate knowledge of its position.



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Space Heritage