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31 May 1994 Measurement of focus and off-axis anisoplanatism using a sodium resonance beacon and binary stars
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Abstract
We have obtained the first measurements with a sodium laser beacon of focus anisoplanatism over large aperture, at the Multiple Mirror Telescope. In complementary studies, the atmospheric turbulence at the high altitude and on the large scale responsible for the measured focus anisoplanatism was explored by observations of binary stars of different separations. We confirm the predictions of Kolmogorov theory, and derive an effective height for the turbulence of 5050 m above the telescope. These results confirm that the sodium laser guide star planned for use with the 6.5 m telescope conversion of the MMT in 1996 will allow diffraction limited infrared observations in the H and K bands.
© (1994) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Michael Lloyd-Hart, Bruce P. Jacobsen, James Roger P. Angel, Richard G. Dekany, Barbara Carter, Walter J. Wild, Edward J. Kibblewhite, and James W. Beletic "Measurement of focus and off-axis anisoplanatism using a sodium resonance beacon and binary stars", Proc. SPIE 2201, Adaptive Optics in Astronomy, (31 May 1994); https://doi.org/10.1117/12.176062
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