High-Order Band-Limited Coronagraphs in Adaptive Optics Systems
نویسندگان
چکیده
منابع مشابه
Multichannel-Hadamard calibration of high-order adaptive optics systems.
we present a novel technique of calibrating the interaction matrix for high-order adaptive optics systems, called the multichannel-Hadamard method. In this method, the deformable mirror actuators are firstly divided into a series of channels according to their coupling relationship, and then the voltage-oriented Hadamard method is applied to these channels. Taking the 595-element adaptive optic...
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Adaptive optics (AO) systems take sampled measurements of the wave-front phase. Because in the general case the spatial-frequency content of the phase aberration is not band limited, aliasing will occur. This aliasing will cause increased residual error and increased scattered light in the point-spread function (PSF). The spatially filtered wave-front sensor (SFWFS) mitigates this phenomenon by...
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متن کاملAn optimized calibration strategy for high order adaptive optics systems : the Slope-Oriented Hadamard Actuation
The correct calibration of the interaction matrix D deeply affects the performance of an adaptive optics system. In the case of high-order systems, when the number of mirror modes is worth a few thousands, the actuation strategy is critical. This is a very first draft of a future paper, so feel free to contact the corresponding author for more accurate and up to date information.
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ژورنال
عنوان ژورنال: Proceedings of the International Astronomical Union
سال: 2005
ISSN: 1743-9213,1743-9221
DOI: 10.1017/s174392130600007x