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Proceedings Paper

ShaneAO: wide science spectrum adaptive optics system for the Lick Observatory
Author(s): Donald Gavel; Renate Kupke; Daren Dillon; Andrew Norton; Chris Ratliff; Jerry Cabak; Andrew Phillips; Connie Rockosi; Rosalie McGurk; Srikar Srinath; Michael Peck; William Deich; Kyle Lanclos; John Gates; Michael Saylor; Jim Ward; Terry Pfister
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Paper Abstract

A new high-order adaptive optics system is now being commissioned at the Lick Observatory Shane 3-meter telescope in California. This system uses a high return efficiency sodium beacon and a combination of low and high-order deformable mirrors to achieve diffraction-limited imaging over a wide spectrum of infrared science wavelengths covering 0.8 to 2.2 microns. We present the design performance goals and the first on-sky test results. We discuss several innovations that make this system a pathfinder for next generation AO systems. These include a unique woofer-tweeter control that provides full dynamic range correction from tip/tilt to 16 cycles, variable pupil sampling wavefront sensor, new enhanced silver coatings developed at UC Observatories that improve science and LGS throughput, and tight mechanical rigidity that enables a multi-hour diffraction-limited exposure in LGS mode for faint object spectroscopy science.

Paper Details

Date Published: 21 July 2014
PDF: 11 pages
Proc. SPIE 9148, Adaptive Optics Systems IV, 914805 (21 July 2014); doi: 10.1117/12.2055256
Show Author Affiliations
Donald Gavel, Univ. of California Observatories (United States)
Renate Kupke, Univ. of California Observatories (United States)
Daren Dillon, Univ. of California Observatories (United States)
Andrew Norton, Univ. of California Observatories (United States)
Chris Ratliff, Univ. of California Observatories (United States)
Jerry Cabak, Univ. of California Observatories (United States)
Andrew Phillips, Univ. of California Observatories (United States)
Connie Rockosi, Univ. of California Observatories (United States)
Rosalie McGurk, Univ. of California Observatories (United States)
Srikar Srinath, Univ. of California Observatories (United States)
Michael Peck, Univ. of California Observatories (United States)
William Deich, Univ. of California Observatories (United States)
Kyle Lanclos, Univ. of California Observatories (United States)
John Gates, Univ. of California Observatories (United States)
Michael Saylor, Univ. of California Observatories (United States)
Jim Ward, Univ. of California Observatories (United States)
Terry Pfister, Univ. of California Observatories (United States)


Published in SPIE Proceedings Vol. 9148:
Adaptive Optics Systems IV
Enrico Marchetti; Laird M. Close; Jean-Pierre Véran, Editor(s)

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