Abstract
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.
