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Application of point diffraction interferometry for measuring angular displacement to a sensitivity of 0.01 arcsec

机译:点衍射干涉仪在角位移测量中的应用,灵敏度为0.01 arcsec

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摘要

The use of point diffraction interferometry is reported for measuring minutes, on the order of 0.01 arcsec angular movements. The algorithm for determining the angular displacement by the dynamics of the interference pattern is described. We also demonstrate results for applying this method to the study of the linearity and hysteresis of the angular shift of the platform, controlled by piezo actuators, which are designed for angular adjustment of the mirror of a solar extreme-ultraviolet telescope. (C) 2015 Optical Society of America
机译:据报道,使用点衍射干涉仪测量分钟,大约为0.01 arcsec角运动。描述了通过干涉图案的动力学确定角位移的算法。我们还演示了将该方法应用于由压电促动器控制的平台角位移的线性和滞后现象的研究结果,这些压电促动器设计用于调节太阳极端紫外线望远镜的反射镜的角度。 (C)2015年美国眼镜学会

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