Fast calibration of high-order adaptive optics systems

Fast calibration of high-order adaptive optics systems

We present a new method of calibrating adaptive optics systems that greatly reduces the required calibration time or, equivalently, improves the signal-to-noise ratio. The method uses an optimized actuation scheme with Hadamard patterns and does not scale with the number of actuators for a given noi...

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Veröffentlicht in:Journal of the Optical Society of America. A, Optics, image science, and vision Optics, image science, and vision, 2004-06, Vol.21 (6), p.1004-1008
Hauptverfasser: Kasper, Markus, Fedrigo, Enrico, Looze, Douglas P, Bonnet, Henri, Ivanescu, Liviu, Oberti, Sylvain
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container_issue 6
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container_title Journal of the Optical Society of America. A, Optics, image science, and vision
container_volume 21
creator Kasper, Markus
Fedrigo, Enrico
Looze, Douglas P
Bonnet, Henri
Ivanescu, Liviu
Oberti, Sylvain
description We present a new method of calibrating adaptive optics systems that greatly reduces the required calibration time or, equivalently, improves the signal-to-noise ratio. The method uses an optimized actuation scheme with Hadamard patterns and does not scale with the number of actuators for a given noise level in the wavefront sensor channels. It is therefore highly desirable for high-order systems and/or adaptive secondary systems on a telescope without a Gregorian focal plane. In the latter case, the measurement noise is increased by the effects of the turbulent atmosphere when one is calibrating on a natural guide star.
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title Fast calibration of high-order adaptive optics systems
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