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Proceedings Paper

Science with laser guide stars at Lick Observatory
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Paper Abstract

The Lick Observatory laser guide star adaptive optics system has been significantly upgraded over the past two years in order to establish it as a facility science instrument on the Shane 3 meter telescope. Natural Guide Star (NGS) mode has been in use in regular science observing programs for over a year. The Laser Guide Star (LGS) mode has been tested in engineering runs and is now starting to do science observing. In good seeing conditions, the system produces K-band Strehl ratios >0.7 (NGS) and >0.6 (LGS). In LGS mode tip/tilt guiding is achieved with a V~16 natural star anywhere inside a 1 arcminute radius field, which provides about 50% sky coverage. This enables diffraction-limited imaging of regions where few bright guidestars suitable for NGS mode are available. NGS mode requires at least a V~13 guidestar and has a sky coverage of <1%. LGS science programs will include high resolution studies of galaxies, active galactic nuclei, QSO host galaxies and dim pre-main sequence stars.

Paper Details

Date Published: 4 February 2002
PDF: 7 pages
Proc. SPIE 4494, Adaptive Optics Systems and Technology II, (4 February 2002); doi: 10.1117/12.454808
Show Author Affiliations
Donald T. Gavel, Lawrence Livermore National Lab. (United States)
Claire E. Max, Lawrence Livermore National Lab. (United States)
Scot S. Olivier, Lawrence Livermore National Lab. (United States)
Brian J. Bauman, Lawrence Livermore National Lab. (United States)
Deanna Marie Pennington, Lawrence Livermore National Lab. (United States)
Bruce A. Macintosh, Lawrence Livermore National Lab. (United States)
Jennifer Patience, Lawrence Livermore National Lab. (United States)
Curtis G. Brown, Lawrence Livermore National Lab. (United States)
Pamela M. Danforth, Lawrence Livermore National Lab. (United States)
Randall L. Hurd, Lawrence Livermore National Lab. (United States)
Elinor L. Gates, Univ. of California/Santa Cruz/Lick Observatory (United States)
Scott A. Severson, Univ. of California/Santa Cruz/Lick Observatory (United States)
James P. Lloyd, Univ. of California/Berkeley (United States)


Published in SPIE Proceedings Vol. 4494:
Adaptive Optics Systems and Technology II
Robert K. Tyson; Domenico Bonaccini; Michael C. Roggemann, Editor(s)

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