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Proceedings Paper

Progress with UnISIS: a Rayleigh laser-guided adaptive optics system
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Paper Abstract

The UnISIS adaptive optics system is now completed and ready for science observations. We describe the experience we have gained in building and using the system, and we give a preview of one new science goal: the use of Gaussian aperture pupil masks for high-contrast imaging of companion objects near bright stars. A key aspect of the UnISIS design is the simultaneous use of two wavefront sensors, one for natural stars and the other for the laser guide star. We demonstrate the performance of this calibration system with results from on-the-bench tests. We describe several practical aspects of observing at Mt. Wilson including our ability to predict the nights of best seeing with weather data available on-line. We also show how the laser guide star return signal is enhanced by observing at large zenith angles and compare this to Rayleigh scattering models.

Paper Details

Date Published: 25 October 2004
PDF: 7 pages
Proc. SPIE 5490, Advancements in Adaptive Optics, (25 October 2004); doi: 10.1117/12.552207
Show Author Affiliations
Laird A. Thompson, Univ. of Illinois/Urbana-Champaign (United States)
Scott W. Teare, New Mexico Institute of Mining and Technology (United States)
Yao-Heng Xiong, Yunnan Observatory (China)
Abhijit Chakraborty, Univ. of Illinois/Urbana-Champaign (United States)
Robert Gruendl, Univ. of Illinois/Urbana-Champaign (United States)

Published in SPIE Proceedings Vol. 5490:
Advancements in Adaptive Optics
Domenico Bonaccini Calia; Brent L. Ellerbroek; Roberto Ragazzoni, Editor(s)

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