Comparison Of Two Techniques For Determining Atmospheric Seeing

Frank D Eaton; William A Peterson; John R Hines; James J Drexler; Arthur H Waldie; David B Soules

doi:10.1117/12.945791

10 August 1988 Comparison Of Two Techniques For Determining Atmospheric Seeing

Frank D Eaton, William A Peterson, John R Hines, James J Drexler, Arthur H Waldie, David B Soules

Proceedings Volume 0926, Optical, Infrared, Millimeter Wave Propagation Engineering; (1988) https://doi.org/10.1117/12.945791
Event: 1988 Technical Symposium on Optics, Electro-Optics, and Sensors, 1988, Orlando, FL, United States

Abstract

Theoretical and experimental results are compared between two techniques for determining atmospheric "seeing" conditions: (a) a method evaluating the modulation transfer function (MTF) of the atmosphere by measuring the line spread function of a star image, and (b) a method measuring the angle of arrival through two relatively small apertures. Near vertical viewing of single stellar sources is considered in all cases. Values of Fried's parameter, 1.0, derived from simultaneous measurements from the different techniques are presented and comparisons of these data are discussed. Results of measurements of mechanical vibrations of the telescope system are presented and the effect of these vibrations on results obtained by the different techniques are evaluated. Optical arrangements and detectors for the two systems are outlined. The system measuring the line spread function of a stellar image uses a linear CCD while the angle of arrival system employs a 2-D CCD camera.

Citation Download Citation

Frank D Eaton, William A Peterson, John R Hines, James J Drexler, Arthur H Waldie, and David B Soules "Comparison Of Two Techniques For Determining Atmospheric Seeing", Proc. SPIE 0926, Optical, Infrared, Millimeter Wave Propagation Engineering, (10 August 1988); https://doi.org/10.1117/12.945791

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