26 July 2016 Final two-stage MOAO on-sky demonstration with CANARY
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Abstract
CANARY is an on-sky Laser Guide Star (LGS) tomographic AO demonstrator in operation at the 4.2m William Herschel Telescope (WHT) in La Palma. From the early demonstration of open-loop tomography on a single deformable mirror using natural guide stars in 2010, CANARY has been progressively upgraded each year to reach its final goal in July 2015. It is now a two-stage system that mimics the future E-ELT: a GLAO-driven woofer based on 4 laser guide stars delivers a ground-layer compensated field to a figure sensor locked tweeter DM, that achieves the final on-axis tomographic compensation. We present the overall system, the control strategy and an overview of its on-sky performance.
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E. Gendron, E. Gendron, T. Morris, T. Morris, A. Basden, A. Basden, F. Vidal, F. Vidal, D. Atkinson, D. Atkinson, U. Bitenc, U. Bitenc, T. Buey, T. Buey, F. Chemla, F. Chemla, M. Cohen, M. Cohen, C. Dickson, C. Dickson, N. Dipper, N. Dipper, P. Feautrier, P. Feautrier, J.-L. Gach, J.-L. Gach, D. Gratadour, D. Gratadour, D. Henry, D. Henry, J.-M. Huet, J.-M. Huet, C. Morel, C. Morel, S. Morris, S. Morris, R. Myers, R. Myers, J. Osborn, J. Osborn, D. Perret, D. Perret, A. Reeves, A. Reeves, G. Rousset, G. Rousset, A. Sevin, A. Sevin, E. Stadler, E. Stadler, G. Talbot, G. Talbot, S. Todd, S. Todd, E. Younger, E. Younger, "Final two-stage MOAO on-sky demonstration with CANARY", Proc. SPIE 9909, Adaptive Optics Systems V, 99090C (26 July 2016); doi: 10.1117/12.2231432; https://doi.org/10.1117/12.2231432
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