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Proceedings Paper

Adaptive optics system tests at the ESO 3.6-m telescope
Author(s): Fritz Merkle; G. Gehring; Francois J. Rigaut; Pierre J. Lena; Gerard Rousset; Jean-Claude Fontanella; Jean-Paul Gaffard
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Paper Abstract

This paper reports the results of the observations made with the VLT Adaptive Optics Prototype System 'COME-ON' at the ESO 3.6 meter telescope. The analysis of uncorrected and corrected images in the near-IR wavelength range (below 5 microns) leads to a detailed assessment of the system performance in terms of improvement of angular resolution that nearly achieves the ideal diffraction profiles down to 1.7 micron wavelength, as well as a Strehl ratio approaching 0.6-0.8 at 3.8 microns. A resolution of 0.12 arcsec has been obtained with this system at 1.7 microns which is wavelength-dependent on the temporal parameters of the observation. The current limiting magnitude for the reference source is m sub R = 11.5 when applying the full correction capabilities of the system, and m sub R = 13 if only the wavefront tilt is corrected.

Paper Details

Date Published: 1 December 1991
PDF: 11 pages
Proc. SPIE 1542, Active and Adaptive Optical Systems, (1 December 1991); doi: 10.1117/12.48819
Show Author Affiliations
Fritz Merkle, European Southern Observatory (Germany)
G. Gehring, European Southern Observatory (Germany)
Francois J. Rigaut, Observatoire de Paris et Univ. Paris VII (France)
Pierre J. Lena, Observatoire de Paris et Univ. Paris VII (France)
Gerard Rousset, ONERA (France)
Jean-Claude Fontanella, ONERA (France)
Jean-Paul Gaffard, Laserdot Groupe Aerospatiale (France)

Published in SPIE Proceedings Vol. 1542:
Active and Adaptive Optical Systems
Mark A. Ealey, Editor(s)

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