Correlation between angle-of-arrival fluctuations on the entrance pupil of a solar telescope

The longitudinal and transverse correlation functions for the fluctuations in the angle of arrival on the entrance pupil of a solar telescope have been estimated. The results are found to be consistent with the inertial model of turbulence. Values of the integral ∫CN2dh of the structure constant over the lower atmospheric layers and of Fried’s seeing parameter r0 are deduced. They are found to be consistent with other independent estimations made with the same telescope.

[1]  R. Hufnagel,et al.  Modulation Transfer Function Associated with Image Transmission through Turbulent Media , 1964 .

[2]  F. Roddier,et al.  Correlation measurements on the complex amplitude of stellar plane waves perturbed by atmospheric turbulence , 1973 .

[3]  C. Coulman,et al.  A quantitative treatment of solar ‘seeing’, I , 1969 .

[4]  K. Browning,et al.  The structure of an inversion above a convective boundary layer as observed using high-power pulsed doppler radar , 1973 .

[5]  David L. Fried,et al.  Differential angle of arrival: Theory, evaluation, and measurement feasibility , 1975 .

[6]  F. Roddier,et al.  Experimental determination of two-dimensional spatiotemporal power spectra of stellar light scintillation Evidence for a multilayer structure of the air turbulence in the upper troposphere , 1973 .

[7]  J. Deardorff,et al.  Three-dimensional numerical study of turbulence in an entraining mixed layer , 1974 .

[8]  D. Fried.  Optical Resolution Through a Randomly Inhomogeneous Medium for Very Long and Very Short Exposures , 1966 .

[9]  R F Lutomirski,et al.  Phase Difference and Angle-of-Arrival Fluctuations in Tracking a Moving Point Source. , 1974, Applied optics.

[10]  A. Consortini,et al.  Investigation of atmospheric turbulence by narrow laser beams. , 1970, Applied optics.

[11]  J. C. Dainty,et al.  Diffraction-limited imaging of stellar objects using telescopes of low optical quality. , 1973 .

[12]  P. Brandt.  Measurement of solar image motion and blurring , 1970 .

[13]  J. Strohbehn.  The feasibility of laser experiments for measuring the permittivity spectrum of the turbulent atmosphere , 1970 .

[14]  C. E. Coulman.  Vertical profiles of small-scale temperature structure in the atmosphere , 1973 .

[15]  Influence of exposure time on spectral properties of turbulence-degraded astronomical images , 1975 .

[16]  S. Clifford,et al.  Acoustic echo-sounding techniques and their application to gravity-wave, turbulence, and stability studies , 1973 .

[17]  Some results on the effect of turbulence on phase-compensated systems , 1976 .

[18]  J. C. André,et al.  Turbulence Approximation for Inhomogeneous Flows: Part II. The Numerical Simulation of a Penetrative Convection Experiment , 1976 .

[19]  R. S. Lawrence,et al.  A survey of clear-air propagation effects relevant to optical communications , 1970 .

[20]  J. Strohbehn,et al.  Polarization and angle-of-arrival fluctuations for a plane wave propagated through a turbulent medium , 1967 .

[21]  D. Korff,et al.  Analysis of a method for obtaining near-diffraction-limited information in the presence of atmospheric turbulence , 1973 .

[22]  P. Brandt.  Frequency spectra of solar image motion , 1969 .

[23]  F. Roddier,et al.  Detection of atmospheric turbulent layers by spatiotemporal and spatioangular correlation measurements of stellar-light scintillation , 1974 .

[24]  C. Coulman.  A quantitative treatment of solar ‘seeing’, II , 1974 .