A&A Supplement series, Vol. 128, March II 1998, 617-619

Received March 18; accepted July 31, 1997

Multiple LGSs to correct conical anisokinetism

R. Ragazzoni, S. Esposito, and A. Riccardi

Send offprint request: R. Ragazzoni

  Astronomical Observatory of Padova, vicolo dell'Osservatorio 5, I-35122 Padova, Italy
e-mail: ragazzoni@astrpd.pd.astro.it
  Arcetri Astrophysical Observatory, Largo Enrico Fermi 5, I-50125 Firenze, Italy
e-mail: esposito@arcetri.astro.it, riccardi@arcetri.astro.it

Abstract:

It is shown that, in the multiple LGS configuration proposed by Tallon & Foy (1990) used for the correction of the conical anisoplanatism, one can derive the correction for the conical anisokinetism effect also, provided that absolute tilt sensing is performed for only one of the various LGSs projected on the sky.

keywords: atmospheric effects -- techniques: miscellameous -- telescopes

• 1. Introduction
• 2. Conditions on the multiple LGSs scheme
• 3. Conical anisokinetism error determination
• 4. Conclusion
• References