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- W2994832936 abstract "Mechanical vibrations resulting from wind, ground vibrations and actuator imperfections lower the performance of optical telescope systems used for astronomical applications, as well as free-space optical communication. This paper proposes a high-bandwidth tip-tilt compensation system for optical telescopes, in order to reduce the influence of these vibrations. A typical, high precision, motorized telescope system is used as a base for this evaluation. By utilization of a tip-tilt sensor, the resulting tip-tilt errors are measured and analyzed in the frequency domain. A fast steering mirror integrated into the optical path allows to compensate for the measured tip-tilt errors. The performance of the fast steering mirror based system is compared to the original, uncompensated system, as well as to a compensation loop, which uses the telescope mount to counteract measured errors. Experiments demonstrate a significant reduction of the tip-tilt errors due to vibrations by a factor of 5 (altitude axis) and by a factor of 4.6 (azimuth axis) utilizing a compensation bandwidth of up to 810 Hz." @default.
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- W2994832936 date "2019-01-01" @default.
- W2994832936 modified "2023-09-25" @default.
- W2994832936 title "High-bandwidth tip-tilt vibration compensation in telescope systems" @default.
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- W2994832936 doi "https://doi.org/10.1016/j.ifacol.2019.11.733" @default.
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