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1 July 1990 Position actuators for the primary mirror of the W. M. Keck telescope
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Abstract
The pistons and tilts of the 36 segments of the Keck Telescope primary mirror are under active control. The mechanical and electronic designs of the actuators used to achieve this control are described along with the performance of the actuators under a variety of tests. In use, the actuators will move in 4-nm increments. This resolution and the accuracy of the actuator moves are adequate for stabilizing the figure of the primary mirror to the precision required for optical and infrared astronomy.
© (1990) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
John D. Meng, J. Franck, George Gabor, Richard C. Jared, Robert H. Minor, and Barbara A. Schaefer "Position actuators for the primary mirror of the W. M. Keck telescope", Proc. SPIE 1236, Advanced Technology Optical Telescopes IV, (1 July 1990); https://doi.org/10.1117/12.19269
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