13 September 2012 Development of new concepts to minimize the impact of fast telescope vibrations seen by the E-ELT/MICADO wavefront sensors
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Abstract
We present our recently started eort to realize feedforward vibration control loops with a full adaptive optics (AO) testbed in the laboratory. A piezo-driven tip-tilt mirror unit introduces an arbitrary, but controllable, vibration power-spectrum to simulate telescope mirror vibrations of any kind on the wavefront sensor. Our ultimate goal is to demonstrate in realistic laboratory tests, how telescope vibrations faster than atmospheric tip-tilt can be measured by accelerometers, and controlled in real-time feedforward to allow for longer and more sensitive wavefront sensor (WFS) integrations.
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Alexander Keck, Jörg-Uwe Pott, Thomas Ruppel, Oliver Sawodny, "Development of new concepts to minimize the impact of fast telescope vibrations seen by the E-ELT/MICADO wavefront sensors", Proc. SPIE 8447, Adaptive Optics Systems III, 84474W (13 September 2012); doi: 10.1117/12.927030; https://doi.org/10.1117/12.927030
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