Extremely high-precision actuators are often required in astronomy and space science. In particular, segmented primary mirror telescopes require dedicated piston-tip-tilt actuators for the control of mirror surface positions in order to optimize optical performance. The accuracy of these precision actuators can also benefit other fields such as space science and laser communications with nanometer accuracy.
The TNO design of precision actuators for segmented astronomical telescopes and other mirrors have the following qualities:
Position Actuators for Segmented Mirrors
Proven 1.4 nm RMS accuracy with simple control
Better than 1 nm RMS accuracy with adaptive control
More reliable and lower-cost voice coil fine stage compared to piezo stage
Upto 1.2 μm/s proven tracking speed over 5-15 mm stroke
Power dissipation less than 1.0 W
Adjustable design allows range from low to high stiffness (‘soft’ or ‘hard’ characteristics) to adapt to different background vibration disturbances and safety requirements
Knowledge institutes join forces to research climate change and air pollution using satellites
03 February 2022
The KNMI, TNO, SRON and Delft University of Technology will collaborate on research and technology development in the field of earth observation. The creation of the ‘Clear Air’ consortium is intended...
Satellite reveals Australian coal mines emit much more methane than expected based on national reporting
29 November 2021
A Dutch group of scientists has used space instrument TROPOMI to calculate methane emissions from six Australian coal mines. Together these account for 7% of the national coal production, but turn out...
TNO.nl collects and processes data in accordance with the applicable privacy regulations for an optimal user experience and marketing practices. This data can easily be removed from your temporary profile page at any time. You can also view our privacy statement or cookie statement.