Recalibrated turbulence profiles at San Pedro Mártir

Details Recalibrated turbulence profiles at San Pedro Mártir Recalibrated turbulence profiles at San Pedro Mártir

Apr 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011rmxaa..47...75a&link_type=abstract

Revista Mexicana de Astronomía y Astrofísica Vol. 47, pp. 75-82 (2011) (http://www.astroscu.unam.mx/~rmaa/)

Astronomy and Astrophysics

Astronomy

3

Atmospheric Effects, Instrumentation: High Angular Resolution, Site Testing

Scientific paper

The calibration of optical turbulence (CN2) 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 CN2 profiles measured with a generalized SCIDAR at the Observatorio Astronómico Nacional of San Pedro Mártir. The median corrected CN2 profile conserves its overall vertical shape. The altitude-averaged ratio of the corrected median CN2 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.

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