Physics – Optics
Scientific paper
Jan 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987spie..779...18s&link_type=abstract
IN: Electromechanical system interaction with optical design; Proceedings of the Meeting, Orlando, FL, May 21, 22, 1987 (A88-413
Physics
Optics
Active Control, Control Systems Design, Electro-Optics, Mirrors, Reflecting Telescopes, Solar Instruments, Atmospheric Correction, Atmospheric Turbulence, Control Theory, Numerical Control, Solar Observatories
Scientific paper
Reflecting telescope active mirror systems require not only the usual attention to servocontrol performance, but also the simultaneous control of the many parallel channels that can interact with one another. The data rates involved are such as to overwhelm conventional digital processors, so that specially-designed, hardwired digital or analog control systems are required. While current mirrors have dozens to hundreds of mirror control channels, future mirrors are projected to have tens of thousands. Attention is presently given to the results obtained with a 57-channel active mirror system for the removal of atmospheric aberrations from solar images.
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