Pseudo-analytic simulation of woofer-tweeter MOAO system: application to MOSAIC

Carine Morel; Éric Gendron; Damien Gratadour; Arnaud Sevin; Gérard Rousset

doi:10.1117/12.2232429

27 July 2016 Pseudo-analytic simulation of woofer-tweeter MOAO system: application to MOSAIC

Carine Morel, Éric Gendron, Damien Gratadour, Arnaud Sevin, Gérard Rousset

Proceedings Volume 9909, Adaptive Optics Systems V; 990976 (2016) https://doi.org/10.1117/12.2232429
Event: SPIE Astronomical Telescopes + Instrumentation, 2016, Edinburgh, United Kingdom

Abstract

MOSAIC is the MOAO-assisted multi-object spectrograph of the European ELT (E-ELT) under Phase A study. In order to maximise the ensquared energy, each of its near-infrared MOAO channels has is own deformable mirror to supplement the build-in E-ELT deformable mirror M4. This secondary DM uses a tomographic reconstructor optimized for the direction of the target, that comes as a complement to the M4 global ground layer correction. We had described in previous work a simulation scheme that allows us to assess the performance of a E-ELT scaled MOAO instrument. In this article, we will show how we have modified this previous single DM simulation to the 2-DM case through two different ways of computing the tomographic error. We compare the performances and the computation time of each method. Finally we present the application of our simulation tool to the MOSAIC case.

Citation Download Citation

Carine Morel, Éric Gendron, Damien Gratadour, Arnaud Sevin, and Gérard Rousset "Pseudo-analytic simulation of woofer-tweeter MOAO system: application to MOSAIC", Proc. SPIE 9909, Adaptive Optics Systems V, 990976 (27 July 2016); https://doi.org/10.1117/12.2232429

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