Tag: Astronomical Telescope

Adaptive Optics – the Next Generation. 11,000 Actuators to Aid Search for Exoplanets with the E-ELT

PI and Fraunhofer IOF Cooperate on New Large Scale Adaptive Optics Project   Piezo-driven active mirrors (tip/tilt motion) and adaptive mirrors (multiple actuators deforming the mirror surface) have been employed in most high-end astronomical telescopes for more than two decades. The resolution gain compared to passive mirrors is typically more than one order of magnitude. […]

Self-Locking Actuator for Hexapod Applications Combines High Push-Pull Force with Picometer Resolution for Active Optical Alignment in Astronomy

1. Introduction Astronomical telescopes usually employ active position control for primary mirror surfaces using motorized mechanical actuators. The motion needed is generally quasistatic, to compensate gravitational and thermal effects. Another application for precision actuators within the telescope at a significantly faster motion response is the high speed tip/tilt control of a secondary or tertiary mirror. […]

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About PI

PI (Physik Instrumente) is a leading manufacturer of precision motion control equipment, piezo motors, air bearing stages and hexapod parallel-kinematics for semiconductor applications, photonics, bio-nano-technology and medical engineering. PI has been developing and manufacturing standard & custom precision products with piezoceramic and electromagnetic drives for 4 decades. The company has been ISO 9001 certified since 1994 and provides innovative, high-quality solutions for OEM and research. PI is present worldwide with fifteen subsidiaries, R&D / engineering on 3 continents and total staff of more than 1,000.

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