LIFT on Keck: analysis of performance and first experimental results

C. Plantet; P. Wizinowich; T. Fusco; B. Neichel; S. Ragland; B. Femenia; R. Rampy

doi:10.1117/12.2232545

27 July 2016 LIFT on Keck: analysis of performance and first experimental results

C. Plantet, P. Wizinowich, T. Fusco, B. Neichel, S. Ragland, B. Femenia, R. Rampy

Proceedings Volume 9909, Adaptive Optics Systems V; 990963 (2016) https://doi.org/10.1117/12.2232545
Event: SPIE Astronomical Telescopes + Instrumentation, 2016, Edinburgh, United Kingdom

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.

Citation Download Citation

C. Plantet, P. Wizinowich, T. Fusco, B. Neichel, S. Ragland, B. Femenia, and R. Rampy "LIFT on Keck: analysis of performance and first experimental results", Proc. SPIE 9909, Adaptive Optics Systems V, 990963 (27 July 2016); https://doi.org/10.1117/12.2232545

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