Off-axis Point Spread Function and Efficiency for Adaptive Optics at San Pedro Mártir and other sites

Physics – Optics

Scientific paper

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Atmospheric Effects, Instrumentation: Adaptive Optics, Methods: Data Analysis, Site Testing, Telescopes

Scientific paper

The efficiency of off-axis adaptive optics systems is estimated for four C[n]2 profiles obtained at four astronomical sites, respectively: European Southern Observatory in Paranal, Chile; Observatorio de Roque de los Muchachos, Canary Islands, Observatorio Astronómico Nacional at San Pedro Mártir, México; and Observatoire de Haute Provence, France. The efficiency of interest is considered through the Strehl ratio of the corrected image calculated for V, J and K bands and for 8-m class telescopes. A detailed analysis of anisotropy in the point spread function associated with off-axis adaptive astronomical correction is presented for the San Pedro Mártir site. The experimental C[n]2 profiles used for the calculations have been measured using instrumented balloon flights and the Generalized Scidar.

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