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Updated: Nov 3, 2025

Gain-compensation Methodology for a Sinusoidal Scan of a Galvanometer Mirror in Proportional-Integral-Differential Control Using Pre-emphasis Techniques
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Compensation Techniques Aimed at Mitigating Vibrations in Optical Ground-Based Telescopes: A Systematic Review.

Guillermo Palacios-Navarro1, Fernando Arranz Martínez1, Raúl Martín Ferrer1

  • 1Department of Electronic Engineering and Communications, University of Zaragoza, 44003 Teruel, Spain.

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Adaptive optics systems effectively reduce vibrations in optical telescopes. Further research is needed to optimize these vibration suppression techniques for enhanced telescope performance.

Keywords:
adaptative opticsclosed-loop controlground-based telescopesoptical telescopevibration attenuationvibration mitigation

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Area of Science:

  • Astronomy and Astrophysics
  • Optical Engineering
  • Control Systems

Background:

  • Ground-based optical telescopes are susceptible to vibrations, which degrade image quality.
  • Effective vibration suppression is crucial for achieving high-resolution astronomical observations.
  • Various techniques have been developed to mitigate vibrational disturbances.

Purpose of the Study:

  • To systematically review and evaluate vibration suppression systems and techniques for optical ground-based telescopes.
  • To provide a state-of-the-art overview of methods developed over the past two decades.
  • To identify areas requiring future research in telescope vibration control.

Main Methods:

  • Systematic literature search of three electronic databases (Science Direct, IEEE, Web of Science) from 2000 to 2020.
  • Inclusion criteria focused on studies proposing vibration mitigation systems for optical telescopes with performance data.
  • Analysis of nine eligible studies meeting the review criteria.

Main Results:

  • Adaptive optics (AO) systems utilizing closed-loop control demonstrate feasibility in mitigating vibrations.
  • Performance of AO systems can be enhanced through tailored variations and additions based on vibration characteristics.
  • The reviewed techniques show promise but require further optimization.

Conclusions:

  • Adaptive optics systems are a viable solution for reducing vibrations in optical telescopes.
  • Customization of AO systems is essential for maximizing their effectiveness against specific vibration types.
  • Further research is recommended to address limitations and advance vibration suppression technologies for optical telescopes.