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Proceedings Paper

LGS adaptive optics and integral field spectroscopy
Author(s): Katharine J. Jones
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Paper Abstract

Ground based astronomical telescopes have limited resolutions due to wavefront distortions caused by constantly changing atmospheric turbulence. Resolution can be improved using adaptive optics. Creating an artificial guidestar in the mesospheric sodium layer using a laser has been a major quest in the astronomical community. The sodium guidestar lasers of five major observatories are compared: AFRL/SOR (solid state, resonant sum-frequence generator), Palomar/Caltech (solid state sum-frequency mode-locked), Lick/LLNL (tunable dye), Keck (tunable dye), and VLT (tunable dye). Increased sky coverage provided by laser guide stars has made possible integral field spectrographs such as OSIRIS and Keck and SINFONI at VLT to study high red shift galaxies. The first results obtained with OSIRIS was diffraction-limitied spectroscopic observations of an infrared flare associated with the radio source Sgr A*. Increased resolution will be defined and the impact on integral field spectroscopy projected.

Paper Details

Date Published: 17 September 2009
PDF: 10 pages
Proc. SPIE 7439, Astronomical and Space Optical Systems, 74390L (17 September 2009); doi: 10.1117/12.824498
Show Author Affiliations
Katharine J. Jones, WBAO Consultant Group (United States)


Published in SPIE Proceedings Vol. 7439:
Astronomical and Space Optical Systems
Penny G. Warren; James B. Heaney; Robert K. Tyson; Michael Hart; E. Todd Kvamme; Cheryl J. Marshall, Editor(s)

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