Abstract
The adaptive-optics (AO) system at the W. M. Keck Observatory is characterized. We calculate the error budget of the Keck AO system operating in natural guide star mode with a near-infrared imaging camera. The measurement noise and bandwidth errors are obtained by modeling the control loops and recording residual centroids. Results of sky performance tests are presented: The AO system is shown to deliver images with average Strehl ratios of as much as 0.37 at 1.58 μm when a bright guide star is used and of 0.19 for a magnitude 12 star. The images are consistent with the predicted wave-front error based on our error budget estimates.
© 2004 Optical Society of America
Full Article | PDF ArticleMore Like This
Matthias Schöck, David Le Mignant, Gary A. Chanan, Peter L. Wizinowich, and Marcos A. van Dam
Appl. Opt. 42(19) 3705-3720 (2003)
Jon S. Lawrence
Appl. Opt. 43(6) 1435-1449 (2004)
Simone Esposito, Armando Riccardi, Fernando Quirós-Pacheco, Enrico Pinna, Alfio Puglisi, Marco Xompero, Runa Briguglio, Lorenzo Busoni, Luca Fini, Paolo Stefanini, Guido Brusa, Andrea Tozzi, Piero Ranfagni, Francesca Pieralli, Juan C. Guerra, Carmelo Arcidiacono, and Piero Salinari
Appl. Opt. 49(31) G174-G189 (2010)