Abstract

AVILA, R. et al. Recalibrated turbulence profiles at San Pedro Mártir. Rev. mex. astron. astrofis [online]. 2011, vol.47, n.1, pp.75-82. ISSN 0185-1101.

The calibration of optical turbulence profiles measured with the generalized SCIDAR technique has been recently reviewed and corrected by Avila & Cuevas (2009). Based on that work, here we present the correction of all the profiles measured with a generalized SCIDAR at the Observatorio Astronómico Nacional of San Pedro Mártir. The median corrected profile conserves its overall vertical shape. The altitude-averaged ratio of the corrected median values over the uncorrected ones equals 0.87. The corrected median value of seeing at the site is 0.''68 ± 0."03, 4.2% lower than the median value obtained with the uncorrected profiles. The median values of the seeing produced by turbulence in the first 2 km above the 1.5 m and the 2.1 m telescopes decrease by 15.8% and 13.6%, respectively. The corrected isoplanatic angle has a median value of 1."96 ± 0."04.

Keywords : atmospheric effects; instrumentation [high angular resolution]; site testing.

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