Intelligent vibration control of ELTs and large AO hardware
Intelligent vibration control of ELTs and large AO hardware
复制标题
ELT 和大型 AO 硬件的智能振动控制
DOI：
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
O. Sawodny
中科院分区：
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作者：
J. Pott;M. Kürster;J. Trowitzsch;J. Borelli;R. Rohloff;T. Herbst;M. Böhm;A. Keck;T. Ruppel;O. Sawodny
MPIA领导着LINC-Nirvana仪器的建造，LINC-Nirvana仪器是MCAO支持的LBT菲佐成像仪，在尺寸和技术上是未来ELT-AO成像仪的先行者。在这篇文章中，我们回顾了在开发我们的战略的关键项目方面取得的最新结果和重大进展，以在科学曝光期间实现高达100 nm的活塞稳定性。我们概述了我们用于光路和倾斜稳定的振动控制策略，包括基于加速度计的实时振动测量、执行器的振动灵敏主动控制以及LBT的动力学模型的建立。MPIA还共同开发了E-ELT第一光近红外成像仪Micado(由SCAO和MCAO协助)。我们用LINC-Nirvana制造的经验将被馈送到Micado Structure AO设计中，以达到最高的空中灵敏度。
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.