Intelligent vibration control of ELTs and large AO hardware

J.-U. Pott; M. Kürster; J. Trowitzsch; J. Borelli; R.-R. Rohloff; T. Herbst; M. Böhm; A. Keck; T. Ruppel; O. Sawodny

doi:10.1117/12.927028

13 September 2012 Intelligent vibration control of ELTs and large AO hardware

J.-U. Pott, M. Kürster, J. Trowitzsch, J. Borelli, R.-R. Rohloff, T. Herbst, M. Böhm, A. Keck, T. Ruppel, O. Sawodny

Proceedings Volume 8447, Adaptive Optics Systems III; 84474V (2012) https://doi.org/10.1117/12.927028
Event: SPIE Astronomical Telescopes + Instrumentation, 2012, Amsterdam, Netherlands

Abstract

MPIA leads the construction of the LINC-NIRVANA instrument, the MCAO-supported Fizeau imager for the LBT, serves as pathfinder for future ELT-AO imagers in terms of size and technology. In this contribution, we review recent results and significant progress made on the development of key items of our stratgey to achieve a piston stability of up to 100nm during a science exposure. We present an overview of our vibration control strategies for optical path and tip-tilt stabilization, involving accelerometer based real-time vibration measurements, vibration sensitive active control of actuators, and the development of a dynamical model of the LBT. MPIA also co-develops the E-ELT first-light NIR imager MICADO (both SCAO and MCAO assisted). Our experiences, made with LINC-NIRVANA, will be fed into the MICADO structural AO design to reach highest on-sky sensitivity.

Citation Download Citation

J.-U. Pott, M. Kürster, J. Trowitzsch, J. Borelli, R.-R. Rohloff, T. Herbst, M. Böhm, A. Keck, T. Ruppel, and O. Sawodny "Intelligent vibration control of ELTs and large AO hardware", Proc. SPIE 8447, Adaptive Optics Systems III, 84474V (13 September 2012); https://doi.org/10.1117/12.927028

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