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arXiv · 1002.2077

EAGLE multi-object AO concept study for the E-ELT

G. Rousset·T. Fusco·F. Assemat·T. Morris·E. Gendron·R. Myers·M. Brangier·M. Cohen·N. Dipper·C. Evans·D. Gratadour·P. Jagourel·P. Laporte·D. Le Mignant·M. Puech·C. Robert·H. Schnetler·W. Taylor·F. Vidal·J. -G. Cuby·M. Lehnert·S. Morris·P. Parr-Burman
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Abstract

EAGLE is the multi-object, spatially-resolved, near-IR spectrograph instrument concept for the E-ELT, relying on a distributed Adaptive Optics, so-called Multi Object Adaptive Optics. This paper presents the results of a phase A study. Using 84x84 actuator deformable mirrors, the performed analysis demonstrates that 6 laser guide stars and up to 5 natural guide stars of magnitude R<17, picked-up in a 7.3' diameter patrol field of view, allow us to obtain an overall performance in terms of Ensquared Energy of 35% in a 75x75 mas^2 spaxel at H band, whatever the target direction in the centred 5' science field for median seeing conditions. The computed sky coverage at galactic latitudes |b|~60 is close to 90%.

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G. Rousset, T. Fusco, F. Assemat, T. Morris, E. Gendron, R. Myers, M. Brangier, M. Cohen, N. Dipper, C. Evans, D. Gratadour, P. Jagourel, P. Laporte, D. Le Mignant, M. Puech, C. Robert, H. Schnetler, W. Taylor, F. Vidal, J. -G. Cuby, M. Lehnert, S. Morris, P. Parr-Burman. 2010-02-10. EAGLE multi-object AO concept study for the E-ELT. https://doi.org/10.1051/ao4elt%2F201002008

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