Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998a%26as..129..617e&link_type=abstract
Astronomy and Astrophysics Supplement, v.129, p.617-635
Astronomy and Astrophysics
Astrophysics
11
Turbulence, Atmospheric Effects, Instrumentation: Miscellaneous, Method: Data Analysis, Techniques: Photometric, Stars: Individual: Betelgeuse
Scientific paper
This paper aims to help prospective observers estimate the likely performance of adaptive optics for photometric observations. Both real and simulated adaptive optics data are used in specific examples covering the major observational situations. These illustrate the different sources of uncertainty: seeing fluctuations, presence of both a large halo and residual fluctuations in the point spread function, and angular anisoplanatism. The astronomical cases studied include isolated sources, faint structures around a star, and crowded stellar fields. The photometric performance image deconvolution is also examined. No attempt is made to investigate exhaustively all possible atmospheric conditions and observing configurations, but the discussion should be a useful guide to the feasibility of using adaptive optics in astronomical programmes requiring particular photometric accuracies. Based on observations obtained at the European Southern Observatory, La Silla, Chile.
Edmunds Michael G.
Esslinger O.
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