Wavefront outer scale and seeing measurements at San Pedro Mártir observatory
Por:
Conan R., Avila R., Sánchez L.J., Ziad A., Martin F., Borgnino J., Harris O., González S.I., Michel R., Hiriart D.
Publicada:
1 ene 2002
Resumen:
The first measurements of the spatial coherence outer scale at the Observatorio Astronómico Nacional at San Pedro Mártir (OAN-SPM) are reported along with long term seeing measurements. These parameters were measured with the Generalized Seeing Monitor and with a Differential Image Motion Monitor. An instrumented mast was also used to measure the structure constant of the refractive index Cn 2 in the first 15m. Log-normal statistics were found for the seeing and for the outer scale, with median values of0.92? and 27.0 m, respectively. The distribution of the outer scale values is similar to that found in other observatories around the world, suggesting that the presence of trees in the OAN-SPM do not affect the outer scale values. Correlation studies suggest that large values of the seeing and the outer scale are likely to occur when the wind blows from the SSW. Further studies are recommended to confirm this tendency.
Filiaciones:
Conan R.:
European Southern Observatory, Karl-Schwarzschild-Str. 2, 85748 Garching bei München, Germany
Avila R.:
Instituto de Astronomía, UNAM, Apdo. Postal 72-3 (Xangari), 58089 Morelia Mich., Mexico
Sánchez L.J.:
Instituto de Astronomía, UNAM, Apdo. Postal 70-264, 04510 México D.F., Mexico
Ziad A.:
U.M.R. 6525 Astrophysique, Universite de Nice Sophia Antipolis, CNRS, Parc Valrose, 06108 Nice Cedex 2, France
Martin F.:
U.M.R. 6525 Astrophysique, Universite de Nice Sophia Antipolis, CNRS, Parc Valrose, 06108 Nice Cedex 2, France
Borgnino J.:
U.M.R. 6525 Astrophysique, Universite de Nice Sophia Antipolis, CNRS, Parc Valrose, 06108 Nice Cedex 2, France
Harris O.:
Instituto de Astronomía, UNAM, Apdo. Postal 877, 22800 Ensenada B.C., Mexico
González S.I.:
Instituto de Astronomía, UNAM, Apdo. Postal 70-264, 04510 México D.F., Mexico
Michel R.:
Instituto de Astronomía, UNAM, Apdo. Postal 877, 22800 Ensenada B.C., Mexico
Hiriart D.:
Instituto de Astronomía, UNAM, Apdo. Postal 877, 22800 Ensenada B.C., Mexico
All Open Access, Bronze
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