Adaptive secondary mirrors upgrades at the Large Binocular Telescope

Guido Brusa; Xianyu Zhang; Michael Lefebvre; Julian Christou; Albert Conrad; Roberto Biasi; Mario Andrighettoni; Martin Glück; Moritz Straub; Jörg-Uwe Pott

doi:10.1117/12.2563092

13 December 2020 Adaptive secondary mirrors upgrades at the Large Binocular Telescope

Guido Brusa, Xianyu Zhang, Michael Lefebvre, Julian Christou, Albert Conrad, Roberto Biasi, Mario Andrighettoni, Martin Glück, Moritz Straub, Jörg-Uwe Pott

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Proceedings Volume 11448, Adaptive Optics Systems VII; 114485T (2020) https://doi.org/10.1117/12.2563092
Event: SPIE Astronomical Telescopes + Instrumentation, 2020, Online Only

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Abstract

With the exception of the two prime focus cameras, all the instruments on the Large Binocular Telescope (LBT) use the two advanced 672-voice-coil-actuators adaptive secondary mirrors (ASMs). Based on 10 years of ASMs operation experience, and taking advantage of new technology developments, we decided to upgrade some of the ASMs hardware, to increase their performance and reliability. In this paper, we describe these improvements, i.e., upgrade of the power backplanes used in the ASM electronic control system, integration of an accelerometer-based tip-tilt vibration suppression system and upgrade of the optical calibration interferometers.

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Guido Brusa, Xianyu Zhang, Michael Lefebvre, Julian Christou, Albert Conrad, Roberto Biasi, Mario Andrighettoni, Martin Glück, Moritz Straub, and Jörg-Uwe Pott "Adaptive secondary mirrors upgrades at the Large Binocular Telescope", Proc. SPIE 11448, Adaptive Optics Systems VII, 114485T (13 December 2020); https://doi.org/10.1117/12.2563092

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