Vibrations in AO control: a short analysis of on-sky data around the world

被引：29

作者：

Kulcsar, Caroline ^{[1
]}

Sivo, Gaetano ^{[1
,2
]}

Raynaud, Henri-Francois ^{[1
]}

Neichel, Benoit ^{[3
]}

Rigaut, Francois ^{[3
]}

Christou, Julian ^{[4
]}

Guesalaga, Andres ^{[5
]}

Correia, Carlos ^{[6
]}

Veran, Jean-Pierre ^{[6
]}

Gendron, Eric ^{[7
]}

Vidal, Fabrice ^{[7
]}

Rousset, Gerard ^{[7
]}

Morris, Tim ^{[8
]}

Esposito, Simone ^{[9
]}

Quiros-Pacheco, Fernando ^{[9
]}

Agapito, Guido ^{[9
]}

Fedrigo, Enrico ^{[10
]}

Pettazzi, Lorenzo ^{[10
]}

Clare, Richard ^{[10
]}

Muradore, Riccardo ^{[11
]}

Guyon, Olivier ^{[12
]}

Martinache, Frantz ^{[12
]}

Meimon, Serge ^{[2
]}

Conan, Jean-Marc ^{[2
]}

机构：

[1] Univ Paris 13, L2TI, Inst Galilee, F-93430 Villetaneuse, France

[2] Off Natl Etud & Rech Aerosp, French Aerosp Lab, DOTA, Chatillon, France

[3] Gemini Observ, La Serena, Chile

[4] Gemini Observ, Hilo, HI USA

[5] Univ Catolica, Ctr Astroengn, Santiago, Chile

[6] Herzberg Inst Astrophys, Natl Res Council, Victoria, BC, Canada

[7] Univ Paris Didcrot, UPMC, CNRS, LESIA,Observ Paris, Meudon, France

[8] Univ Durham, Dept Phys, Durham, England

[9] INAF, Osseevator Astrofis Arcetri, Florence, Italy

[10] ESO, Garching, Germany

[11] Univ Verona, Dept Comp Sci, Verona, Italy

[12] Natl Observ Japan, Sabaru Telescope, Hilo, HI USA

来源：

ADAPTIVE OPTICS SYSTEMS III | 2012年 / 8447卷

关键词：

Adaptive optics systems; vibration filtering; spectral analysis; tip/tilt control; atmospheric turbulence; disturbance identification; discrete-time LQG control; H2; control; ADAPTIVE OPTICS; SYSTEM;

D O I：

10.1117/12.925984

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present in this paper an analysis of several tip-tilt on-sky data registered on adaptive optics systems installed on different telescopes (Gemini South, William Herschel Telescope, Large Binocular Telescope, Very Large Telescope, Subaru). Vibration peaks can be detected, and it is shown that their presence and location may vary, and that their origin is not always easy to determine. Mechanical solution that have been realized to mitigate vibrations are presented. Nevertheless, residual vibrations may still affect the instruments' performance, ranging from narrow high frequency vibration peaks to wide low frequency windshake-type perturbations. Power Spectral Densities (PSDs) of on-sky data are presented to evidence these features. When possible, indications are given regarding the gain in performance that could be achieved with adequate controllers accounting for vibration mitigation. Two examples of controller identification and design illustrate their ability to compensate for various types of disturbances (turbulence, windshake, vibration peaks, ...), showing a significant gain in performance.

引用

页数：14

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