Measurements of tilt angular anisoplanatism

Mikhail S. Belen'kii; Stephen J. Karis; James M. Brown II; Robert Q. Fugate

doi:10.1117/12.290165

17 October 1997 Measurements of tilt angular anisoplanatism

Mikhail S. Belen'kii, Stephen J. Karis, James M. Brown II, Robert Q. Fugate

Proceedings Volume 3126, Adaptive Optics and Applications; (1997) https://doi.org/10.1117/12.290165
Event: Optical Science, Engineering and Instrumentation '97, 1997, San Diego, CA, United States

Abstract

A new approach for the experimental study of tilt angular anisoplanatism is developed. This method uses measurements of the random motion of a moon edge image to assess wavefront tilt. This technique provides a wide, continuous range of angular separations which are not available in observations of binary stars. It is determined that the brightness of the moon is sufficient to make observations with a high resolution imaging system. Statistical properties of the tilt angular correlation and tilt averaging function are experimentally investigated. It is shown that tilt angular correlation scale increases from 40 arcsec to 118 arcsec by increasing telescope diameter, indicating that the concept of isoplanatic angle is not applicable to tilt-related phenomena.

Citation Download Citation

Mikhail S. Belen'kii, Stephen J. Karis, James M. Brown II, and Robert Q. Fugate "Measurements of tilt angular anisoplanatism", Proc. SPIE 3126, Adaptive Optics and Applications, (17 October 1997); https://doi.org/10.1117/12.290165

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