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

Caroline Kulcsár, Gaetano Sivo, Henri François Raynaud, Benoît Neichel, François Rigaut, Julian Christou, Andres Guesalaga, Carlos Correia, Jean Pierre Véran, Éric Gendron, Fabrice Vidal, Gérard Rousset, Tim Morris, Simone Esposito, Fernando Quirós-Pacheco, Guido Agapito, Enrico Fedrigo, Lorenzo Pettazzi, Richard Clare, Riccardo MuradoreOlivier Guyon, Frantz Martinache, Serge Meimon, Jean Marc Conan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

30 Citations (Scopus)

Abstract

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.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Volume8447
DOIs
StatePublished - 2012
Externally publishedYes
EventAdaptive Optics Systems III - Amsterdam, Netherlands
Duration: Jul 1 2012Jul 6 2012

Other

OtherAdaptive Optics Systems III
CountryNetherlands
CityAmsterdam
Period7/1/127/6/12

Fingerprint

Telescopes
sky
Vibration
vibration
telescopes
Telescope
Controllers
Binoculars
Adaptive optics
controllers
Power spectral density
Subaru Telescope
Controller
Tip-tilt
Identification (control systems)
Turbulence
Power Spectral Density
Adaptive Optics
adaptive optics
Low Frequency

Keywords

  • Adaptive optics systems
  • Atmospheric turbulence
  • Discrete-time lqg control
  • Disturbance identification
  • H2 control
  • Spectral analysis
  • Tip/tilt control
  • Vibration filtering

ASJC Scopus subject areas

  • Applied Mathematics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Kulcsár, C., Sivo, G., Raynaud, H. F., Neichel, B., Rigaut, F., Christou, J., ... Conan, J. M. (2012). Vibrations in AO control: A short analysis of on-sky data around the world. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 8447). [84471C] https://doi.org/10.1117/12.925984

Vibrations in AO control : A short analysis of on-sky data around the world. / Kulcsár, Caroline; Sivo, Gaetano; Raynaud, Henri François; Neichel, Benoît; Rigaut, François; Christou, Julian; Guesalaga, Andres; Correia, Carlos; Véran, Jean Pierre; Gendron, Éric; Vidal, Fabrice; Rousset, Gérard; Morris, Tim; Esposito, Simone; Quirós-Pacheco, Fernando; Agapito, Guido; Fedrigo, Enrico; Pettazzi, Lorenzo; Clare, Richard; Muradore, Riccardo; Guyon, Olivier; Martinache, Frantz; Meimon, Serge; Conan, Jean Marc.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 8447 2012. 84471C.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Kulcsár, C, Sivo, G, Raynaud, HF, Neichel, B, Rigaut, F, Christou, J, Guesalaga, A, Correia, C, Véran, JP, Gendron, É, Vidal, F, Rousset, G, Morris, T, Esposito, S, Quirós-Pacheco, F, Agapito, G, Fedrigo, E, Pettazzi, L, Clare, R, Muradore, R, Guyon, O, Martinache, F, Meimon, S & Conan, JM 2012, Vibrations in AO control: A short analysis of on-sky data around the world. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 8447, 84471C, Adaptive Optics Systems III, Amsterdam, Netherlands, 7/1/12. https://doi.org/10.1117/12.925984
Kulcsár C, Sivo G, Raynaud HF, Neichel B, Rigaut F, Christou J et al. Vibrations in AO control: A short analysis of on-sky data around the world. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 8447. 2012. 84471C https://doi.org/10.1117/12.925984
Kulcsár, Caroline ; Sivo, Gaetano ; Raynaud, Henri François ; Neichel, Benoît ; Rigaut, François ; Christou, Julian ; Guesalaga, Andres ; Correia, Carlos ; Véran, Jean Pierre ; Gendron, Éric ; Vidal, Fabrice ; Rousset, Gérard ; Morris, Tim ; Esposito, Simone ; Quirós-Pacheco, Fernando ; Agapito, Guido ; Fedrigo, Enrico ; Pettazzi, Lorenzo ; Clare, Richard ; Muradore, Riccardo ; Guyon, Olivier ; Martinache, Frantz ; Meimon, Serge ; Conan, Jean Marc. / Vibrations in AO control : A short analysis of on-sky data around the world. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 8447 2012.
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