Vibrations in MagAO: frequency-based analysis of on-sky data, resonance sources identification, and future challenges in vibrations mitigation

Sebastián Zúñiga; Javier Garcés; Laird M. Close; Jared R. Males; Katie M. Morzinski; Pedro Escárate; Mario Castro; José Marchioni; Diego Zagals

doi:10.1117/12.2232676

27 July 2016 Vibrations in MagAO: frequency-based analysis of on-sky data, resonance sources identification, and future challenges in vibrations mitigation

Sebastián Zúñiga, Javier Garcés, Laird M. Close, Jared R. Males, Katie M. Morzinski, Pedro Escárate, Mario Castro, José Marchioni, Diego Zagals

Author Affiliations +

Proceedings Volume 9909, Adaptive Optics Systems V; 99093L (2016) https://doi.org/10.1117/12.2232676
Event: SPIE Astronomical Telescopes + Instrumentation, 2016, Edinburgh, United Kingdom

Abstract

Frequency-based analysis and comparisons of tip-tilt on-sky data registered with 6.5 Magellan Telescope Adaptive Optics (MagAO) system on April and Oct 2014 was performed. Twelve tests are conducted under different operation conditions in order to observe the influence of system instrumentation (such as fans, pumps and louvers). Vibration peaks can be detected, power spectral densities (PSDs) are presented to reveal their presence. Instrumentation-induced resonances, close-loop gain and future challenges in vibrations mitigation techniques are discussed.

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Sebastián Zúñiga, Javier Garcés, Laird M. Close, Jared R. Males, Katie M. Morzinski, Pedro Escárate, Mario Castro, José Marchioni, and Diego Zagals "Vibrations in MagAO: frequency-based analysis of on-sky data, resonance sources identification, and future challenges in vibrations mitigation", Proc. SPIE 9909, Adaptive Optics Systems V, 99093L (27 July 2016); https://doi.org/10.1117/12.2232676

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