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Proceedings Paper

Sparse aperture differential piston measurements using the pyramid wave-front sensor
Author(s): Carmelo Arcidiacono; Xinyang Chen; Zhaojun Yan; Lixin Zheng; Guido Agapito; Chaoyan Wang; Nenghong Zhu; Liyun Zhu; Jianqing Cai; Zhenghong Tang
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Paper Abstract

In this paper we report on the laboratory experiment we settled in the Shanghai Astronomical Observatory (SHAO) to investigate the pyramid wave-front sensor (WFS) ability to measure the differential piston on a sparse aperture. The ultimate goal is to verify the ability of the pyramid WFS work in close loop to perform the phasing of the primary mirrors of a sparse Fizeau imaging telescope. In the experiment we installed on the optical bench we performed various test checking the ability to flat the wave-front using a deformable mirror and to measure the signal of the differential piston on a two pupils setup. These steps represent the background from which we start to perform full close loop operation on multiple apertures. These steps were also useful to characterize the achromatic double pyramids (double prisms) manufactured in the SHAO optical workshop.

Paper Details

Date Published: 27 July 2016
PDF: 10 pages
Proc. SPIE 9909, Adaptive Optics Systems V, 99096K (27 July 2016); doi: 10.1117/12.2232374
Show Author Affiliations
Carmelo Arcidiacono, INAF - Osservatorio Astronomico di Bologna (Italy)
Xinyang Chen, Shanghai Astronomical Observatory (China)
Zhaojun Yan, Shanghai Astronomical Observatory (China)
Lixin Zheng, Shanghai Astronomical Observatory (China)
Guido Agapito, INAF - Osservatorio Astrofisico di Arcetri (Italy)
Chaoyan Wang, Shanghai Astronomical Observatory (China)
Nenghong Zhu, Shanghai Astronomical Observatory (China)
Liyun Zhu, Shanghai Astronomical Observatory (China)
Jianqing Cai, Shanghai Astronomical Observatory (China)
Zhenghong Tang, Shanghai Astronomical Observatory (China)

Published in SPIE Proceedings Vol. 9909:
Adaptive Optics Systems V
Enrico Marchetti; Laird M. Close; Jean-Pierre Véran, Editor(s)

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