Rayleigh scatter measurement of Keck LGS by Subaru Telescope

Yutaka Hayano; Wolfgang Gaessler; Hideki Takami; Naruhisa Takato; Yosuke Minowa

doi:10.1117/12.459682

7 February 2003 Rayleigh scatter measurement of Keck LGS by Subaru telescope

Yutaka Hayano, Wolfgang Gaessler, Hideki Takami, Naruhisa Takato, Yosuke Minowa

Proceedings Volume 4839, Adaptive Optical System Technologies II; (2003) https://doi.org/10.1117/12.459682
Event: Astronomical Telescopes and Instrumentation, 2002, Waikoloa, Hawai'i, United States

Abstract

We measured the Rayleigh scattered light from the laser beam launched from Keck II telescope. The illumination at the pupil of Subaru telescope was recorded using the APDs of the Subaru AO system wavefront sensor. Since the field of view of our wavefront sensor is only 5 arcsec in diameter, it was possible to follow the laser beam as it travels across the telescope pupil. The maximum surface brightness of the laser beam is estimated at 16.2 mag/arcsec².

Citation Download Citation

Yutaka Hayano, Wolfgang Gaessler, Hideki Takami, Naruhisa Takato, and Yosuke Minowa "Rayleigh scatter measurement of Keck LGS by Subaru telescope", Proc. SPIE 4839, Adaptive Optical System Technologies II, (7 February 2003); https://doi.org/10.1117/12.459682

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