Sparse aperture differential piston measurements using the pyramid wave-front sensor
Date Issued
2016
Author(s)
•
Chen, Xinyang
•
Yan, Zhaojun
•
Zheng, Lixin
•
•
Wang, Chaoyan
•
Zhu, Nenghong
•
Zhu, Liyun
•
Cai, Jianqing
•
Tang, Zhenghong
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.
Coverage
Adaptive Optics Systems V
All editors
Marchetti, Enrico; Close, Laird M.; Véran, Jean-Pierre
Series
Volume
9909
Start page
99096K
Conferenece
Adaptive Optics Systems V
Conferenece place
Edinburgh, UK
Conferenece date
26 June-1 July, 2016
Issn Identifier
0277-786X
Ads BibCode
2016SPIE.9909E..6KA
Rights
open.access
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