Abstract
Estimations of Fried's parameter r o are performed simultaneously using the same telescope, from the observed solar granulation contrast and from the variance of angle-of-arrival fluctuations. The results are well correlated and the mean ratio between the values for r o obtained from the 2 methods is found to be equal to 1.4.
The sensitivity and accuracy of the methods are discussed in terms of their range of application (site testing, seeing measurements during solar observations ...). Temporal power spectra of turbulent energy are computed and evidence of long period oscillations of about 10 min is found.
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Aime, C., Demarcq, J., Fossat, E., and Ricort, G.: 1974, Nouv. Rev. Opt. 5, 257.
Azouit, M., Borgnino, J., and Vernin, J.: 1978, J. Opt. (Paris) 9, 291.
Bass, J.: 1967, Eléments de calcul des probabilités théorique et appliquée, (2ème édition), Masson & Cie.
Blackman, R. B. and Tukey, J. W.: 1959, The Measurement of Power Spectra from the Point of View of Communications Engineering, Dover Publications, Inc., New York.
Borgnino, J. and Vernin, J.: 1978, J. Opt. Soc. Am. 68, 1056.
Borgnino, J., Vernin, J., Aime, C., and Ricort, G.: 1979, Solar Phys. 64, 403.
Breckinridge, J. B.: 1976, J. Opt. Soc. Am. 66, 143.
Fossat, E. and Ricort, G.: 1975, Astron. Astrophys. 43, 243.
Fried, D. L.: 1965, J. Opt. Soc. Am. 55, 1427.
Fried, D. L.: 1966, J. Opt. Soc. Am. 56, 1372.
Gossard, E. E. and Hooke, W. H.: 1975, Waves in the Atmosphere: Atmospheric Infrasound and Gravity Waves-Their Generation and Propagation, Elsevier Scientific Publishing Company, Amsterdam.
Grec, G. and Fossat, E.: 1977, Astron. Astrophys. 55, 411.
Karo, D. P. and Schneiderman, A. M.: 1977, J. Opt. Soc. Am. 67, 1277.
Karo, D. P. and Schneiderman, A. M.: 1978, J. Opt. Soc. Am. 68, 480.
Kolmogorov, A. N.: 1941, DAN SSSR 30 (4), 229.
Korff, D.: 1973, J. Opt. Soc. Am. 63, 971.
Ricort, G. and Aime, C.: 1979, Astron. Astrophys. 76, 324.
Ricort, G., Aime, C., and Fossat, E.: 1976, Nouv. Rev. Opt. 7, 63.
Ricort, G., Aime, C., Roddier, C., and Borgnino, J.: 1981a, Solar Phys. 69, 223.
Ricort, G. Aime, C., Deubner, F., and Mattig, W.: 1981b, Astron. Astrophys. 97, 114.
Roddier, C.: 1976, J. Opt. Soc. Am. 66, 478.
Roddier, C. and Roddier, F.: 1973, J. Opt. Soc. Am. 63, 661.
Roddier, F., Ricort, G., and Roddier, C.: 1978, Opt. Com. 24, 281.
Tatarski, V. I.: 1971, The Effects of the Turbulent Atmosphere on Wave Propagation, Israël Program for Scientific Translations.
Tennekes, H. and Lumley, J. L.: 1972, A First Course in Turbulence, MIT Press, Cambridge, Massachusetts and London.
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Ricort, G., Borgnino, J. & Aime, C. A comparison between estimations of Fried's parameter r o simultaneously obtained by measurements of solar granulation contrast and of the variance of angle-of-arrival fluctuations. Sol Phys 75, 377–394 (1982). https://doi.org/10.1007/BF00153485
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DOI: https://doi.org/10.1007/BF00153485