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Science 12 September 1997:
Vol. 277. no. 5332, pp. 1649 - 1652
DOI: 10.1126/science.277.5332.1649
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Reports
Image Improvement from a Sodium-Layer Laser Guide Star Adaptive Optics System
C. E. Max,
*
S. S. Olivier,
H. W. Friedman,
J. An,
K. Avicola,
B. V. Beeman,
H. D. Bissinger,
J. M. Brase,
G.
V. Erbert,
D. T. Gavel,
K. Kanz,
M. C. Liu,
B. Macintosh,
K. P. Neeb,
J. Patience,
K. E. Waltjen
A sodium-layer laser guide star beacon with high-order adaptive
optics at Lick Observatory (Mount Hamilton, California) produced a
factor of 2.4 intensity increase and a factor of 2 decrease in full
width at half maximum for an astronomical point source, compared with
image motion compensation alone. The image full widths at half maximum
were identical for laser and natural guide stars (0.3 arc second). The
Strehl ratio with the laser guide star was 65 percent of that with a
natural guide star. This technique should allow ground-based telescopes
to attain the diffraction limit, by correcting for atmospheric
distortions.
C. E. Max, S. S. Olivier, H. W. Friedman, J. An, K. Avicola, B. V. Beeman, H. D. Bissinger, J. M. Brase,
G. V. Erbert, D. T. Gavel, K. Kanz, B. Macintosh, K. P. Neeb, K. E. Waltjen, Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, CA 94550, USA.
M. C. Liu, Department of Astronomy, University of California,
Berkeley, CA 94720, USA.
J. Patience, Department of Physics and Astronomy, University of
California, 405 Hilgard Avenue, Los Angeles, CA 90024, USA.
*
To whom correspondence should be addressed.
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THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
- Laser Guide Star Adaptive Optics Imaging Polarimetry of Herbig Ae/Be Stars.
- M. D. Perrin, J. R. Graham, P. Kalas, J. P. Lloyd, C. E. Max, D. T. Gavel, D. M. Pennington, and E. L. Gates (2004)
Science
303, 1345-1348
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