Titre du document

Pendular seismometer for correcting telescope vibrations

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Nom du Corpus

AstroConcepts

Auteur(s)
  • A. Tokovinin
Affiliation(s)
  • CRAL-Observatoire de Lyon, 9 avenue Charles André, 69561 Saint Genis Laval cedex, France
Résumé

Vibrations of telescopes can be successfully corrected in real time using a seismometer as an inertial reference. A prototype pendular seismometer is described that is suitable for angular vibration measurements at frequencies from a few tenths to several tens of Hz. The average pendulum position is maintained by a slow servo system that also damps its resonance. The prototype instrument has an rms noise of 3 milliarcsec in the 0–25-Hz band. It was tested on a 1-m telescope, and a good agreement of the seismometer signal with the direct optical measurements of the optical axis fluctuations of the telescope was found. A frequency response of the seismometer is studied, an expression for the rms amplitude of residual (uncompensated) vibrations is given. In space applications it is suggested that a pendular mirror in front of the telescope is used as an inertial reference for vibration correction.

Langue(s) du document
Indéterminé
Année de publication
2000
Revue

Monthly Notices of the Royal Astronomical Society

Éditeur
OUP
Type de publication
journal
Type de document
research-article
Présence de XML structuré
Oui
Version de PDF
1.4
Score de qualité du texte
7.74
Nom du concept
  • Artificial guide stars
Mots-clés d’auteur
  • instrumentation: miscellaneous
  • telescopes
Catégories Science-Metrix
  • 1 - natural sciences ; 2 - physics & astronomy ; 3 - astronomy & astrophysics
Catégories Scopus
  • 1 - Physical Sciences ; 2 - Earth and Planetary Sciences ; 3 - Space and Planetary Science
  • 1 - Physical Sciences ; 2 - Physics and Astronomy ; 3 - Astronomy and Astrophysics
Catégories WoS
  • 1 - science ; 2 - astronomy & astrophysics
Identifiant ISTEX
6AABCEDD11A126C57D92A3EDFE2EF5572E489346
ark:/67375/HXZ-ST9QR5V7-N
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