Design of an interferometric system for the measurement of phasing errors in segmented mirrors.
Design of an interferometric system for the measurement of phasing errors in segmented mirrors.
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DOI：
10.1364/ao.41.004562
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发表时间：
2002-08
期刊：
影响因子：
1.9
通讯作者：
C. Pizarro;J. Arasa;F. Laguarta;N. Tomàs;Agustí Pintó
中科院分区：
文献类型：
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作者：
C. Pizarro;J. Arasa;F. Laguarta;N. Tomàs;Agustí Pintó
分段反射镜必须解决的新问题之一与周期位相有关，因为对于这样的反射镜，为了表现出衍射受限的性能，分段必须以波长的几分之一的精度定位。我们描述了一种测量日光条件下两段之间的相位误差(即尖端、倾斜和活塞)的仪器的光学设计。它的设计是基于大口径白光迈克尔逊干涉仪。它是由西班牙加泰罗尼亚理工大学传感器、仪器和系统开发中心(CD6)开发的，其最终测试是在Gran TelesCopio Canarias测试工作台上进行的。
One of the new problems that has to be solved for segmented mirrors is related to periodic phasing, because for such mirrors to exhibit diffraction-limited performance the segments have to be positioned with an accuracy of a fraction of a wavelength. We describe the optical design of an instrument that measures the phasing errors (i.e., tip, tilt, and piston) between two segments under daylight conditions. Its design is based on a high-aperture white-light Michelson interferometer. It was developed at the Center for Sensors, Instruments and Systems Development (CD6) of the Technical University of Catalunya, Spain, and its final testing was carried out on the Gran Telescopio Canarias test workbench.