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Proceedings Paper

LIFT on Keck: analysis of performance and first experimental results
Author(s): C. Plantet; P. Wizinowich; T. Fusco; B. Neichel; S. Ragland; B. Femenia; R. Rampy
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Paper Abstract

Wavefront sensing in the near infrared has become an attractive option with the advent of new low-noise infrared detectors, such as the SAPHIRA (Selex) and RAPID (CEA/Sofradir) APD arrays. The performance improvements obtained with the H2RG-based Keck I near-infrared tip-tilt sensor is motivating the implementation of a near-infrared low-order sensor for Keck II. The recently proposed focal plane sensor algorithm LIFT could fulfill this role. We show here an analysis of performance, demonstrating that LIFT would provide a significant gain (∼ 1 magnitude) over the current tip/tilt sensor at low flux, as well as the first experimental validation of LIFT on Keck with a calibration source.

Paper Details

Date Published: 27 July 2016
PDF: 10 pages
Proc. SPIE 9909, Adaptive Optics Systems V, 990963 (27 July 2016); doi: 10.1117/12.2232545
Show Author Affiliations
C. Plantet, Univ. Grenoble Aples, CNRS, IPAG (France)
Aix Marseille Univ., CNRS, LAM (France)
ONERA (France)
P. Wizinowich, W. M. Keck Observatory (United States)
T. Fusco, Aix Marseille Univ., CNRS, LAM (France)
ONERA (France)
B. Neichel, Aix Marseille Univ., CNRS, LAM (France)
S. Ragland, W. M. Keck Observatory (United States)
B. Femenia, W. M. Keck Observatory (United States)
R. Rampy, W. M. Keck Observatory (United States)

Published in SPIE Proceedings Vol. 9909:
Adaptive Optics Systems V
Enrico Marchetti; Laird M. Close; Jean-Pierre Véran, Editor(s)

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