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Proceedings Paper

Measurement of focus and off-axis anisoplanatism using a sodium resonance beacon and binary stars
Author(s): Michael Lloyd-Hart; Bruce P. Jacobsen; James Roger P. Angel; Richard G. Dekany; Barbara Carter; Walter J. Wild; Edward J. Kibblewhite; James W. Beletic
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Paper 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.

Paper Details

Date Published: 31 May 1994
PDF: 11 pages
Proc. SPIE 2201, Adaptive Optics in Astronomy, (31 May 1994); doi: 10.1117/12.176062
Show Author Affiliations
Michael Lloyd-Hart, Univ. of Arizona Steward Observatory (United States)
Bruce P. Jacobsen, Univ. of Arizona Steward Observatory (United States)
James Roger P. Angel, Univ. of Arizona Steward Observatory (United States)
Richard G. Dekany, Univ. of Arizona Steward Observatory (United States)
Barbara Carter, Univ. of Chicago (United States)
Walter J. Wild, Univ. of Chicago (United States)
Edward J. Kibblewhite, Univ. of Chicago (United States)
James W. Beletic, Georgia Tech Research Institute (United States)

Published in SPIE Proceedings Vol. 2201:
Adaptive Optics in Astronomy
Mark A. Ealey; Fritz Merkle, Editor(s)

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