Residual wavefront control of segmented mirror telescopes
Residual wavefront control of segmented mirror telescopes
复制标题
分段镜面望远镜的残余波前控制
DOI:
10.1117/12.2630269
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发表时间:
2022
期刊:
影响因子:
--
通讯作者:
Peretz, Eliad
中科院分区:
文献类型:
--
作者:
Ragland, Sam;Wizinowich, Peter L.;van Kooten, Maaike A.;Bottom, Michael;Calvin, Ben;Fitzgerald, Michael P.;Hinz, Philip M.;Jensen-Clem, Rebecca M.;Mawet, Dimitri;Peretz, Eliad
Uncorrected residual wavefront errors limit the ultimate performance of adaptive optics (AO) systems. We present different contributing factors and techniques to estimate and compensate these wavefront errors in the Keck natural guide star (NGS) AO systems. The error terms include low order static and semi-static aberrations from multiple sources, periodic and random segment piston errors, single-segment low order aberrations, wavefront sensor aliasing, vibrations, calibration drifts, and AO-to-telescope offload related errors. We present the design of a new AO subsystem, a residual wavefront controller (rWFC) to monitor the performance of the AO control loops and the image quality of the AO science instruments and apply the necessary changes to the telescope and AO parameters to minimize the residual wavefront errors. The distributed system consists of components at the telescope, AO bench and the science instruments. A few components of this system are already tested as on-demand standalone tools and will be integrated into a high-level graphical user interface (GUI) to operate the system. The software tool will periodically collect AO telemetry data, perform control loop parameter optimization and update AO parameters such as loop gains, centroid gain, etc. In addition, the system will analyze the science data at the end of each exposure and estimate telescope/AO performance when a bright point source is available in the science field. The benefits of reducing or eliminating the residual wavefront errors have broad implications for optical astronomy. Testing these techniques on a segmented telescope will be extremely useful to the teams developing high contrast AO systems for all extremely large telescopes and future segmented space telescopes.
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影响因子:
4.8
作者:
S. Ragland
通讯作者:
S. Ragland
DOI:
10.1117/1.jatis.6.3.039003
发表时间:
2020
期刊:
Journal of Astronomical Telescopes, Instruments, and Systems
影响因子:
--
作者:
C. Bond;S. Cetre;S. Lilley;P. Wizinowich;D. Mawet;M. Chun;E. Wetherell;S. Jacobson;C. Lockhart;Eric A. Warmbier;S. Ragland;C. Alvarez;O. Guyon;S. Goebel;J. Delorme;N. Jovanovic;D. Hall;J. Wallace;M. Taheri;C. Plantet;V. Chambouleyron
通讯作者:
V. Chambouleyron
DOI:
10.1117/12.2563107
发表时间:
2020
期刊:
Ground-based and Airborne Instrumentation for Astronomy VIII
影响因子:
--
作者:
N. Jovanovic;B. Calvin;Michael E. Porter;T. Schofield;Jason J. Wang;Mitsuko K. Roberts;G. Ruane;J. Wallace;R. Bartos;J. Pezzato;Jennah K. Colborn;J. Delorme;J. Delorme;D. Echeverri;D. Mawet;D. Mawet;C. Bond;S. Cetre;S. Lilley;S. Ragland;P. Wizinowich;R. Jensen
通讯作者:
R. Jensen
DOI:
10.1117/12.2314407
发表时间:
2018
期刊:
Ground-based and Airborne Instrumentation for Astronomy VIII
影响因子:
--
作者:
E. Por;S. Haffert;V. M. Radhakrishnan;D. Doelman;M. V. van Kooten;S. Bos
通讯作者:
S. Bos
DOI:
10.1117/1.jatis.8.2.029006
发表时间:
2022
期刊:
Journal of Astronomical Telescopes, Instruments, and Systems
影响因子:
--
作者:
M. V. van Kooten;R. Jensen;Sylvain Cetre;S. Ragland;C. Bond;J. Fowler;P. Wizinowich
通讯作者:
P. Wizinowich