![]() This will enable a comprehensive analysis of C anary on-sky results and provide tools for validating simulations of MOAO systems for ELTs. Our purpose is to establish a reliable and accurate wave-front error breakdown for LGS MOAO. In 2013, C anary was operated on-sky at the William Herschel telescope (WHT), using three off-axis natural guide stars (NGS) and four off-axis Rayleigh laser guide stars (LGS), in open-loop, with the on-axis compensated turbulence observed with a H-band imaging camera and a Truth wave-front sensor (TS) for diagnostic purposes.Īims. C anary is the multi-object adaptive optics (MOAO) on-sky pathfinder developed in the perspective of multi-object spectrograph on extremely large telescopes (ELTs). Curie – Sorbonne Université, 5 place Jules Janssen, 92190 Meudon, Franceģ Centre for Advanced Instrumentation, Durham University, South Road, Durham DH1 3LE, UKĤ UKATC, Royal Observatory Edinburgh, Blackford Hill, Edinburgh EH9 3HJ, UKĬontext. Joliot-Curie, 13388 Marseille Cedex 13, FranceĮ-mail: LESIA, Observatoire de Paris – Paris Sciences et Lettres – CNRS – Université Paris Diderot – Sorbonne Paris Cité – Université P. Henry 4ġ Aix Marseille Université, CNRS, LAM, Laboratoire d’Astrophysique de Marseille, 38 rue F.
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