The MICADO first light imager for the ELT: FDR numerical simulations for the SCAO mode

Fabrice Vidal; Nicolas Galland; Arielle Bertrou-Cantou; Eric Gendron; Vincent Deo; Amal Zidi; Florian Ferreira; Arnaud Sevin; Caroline Kulcsár; Henri-François Raynaud; Yann Clénet; Richard Davies

doi:10.1117/12.2629308

29 August 2022 The MICADO first light imager for the ELT: FDR numerical simulations for the SCAO mode

Fabrice Vidal, Nicolas Galland, Arielle Bertrou-Cantou, Eric Gendron, Vincent Deo, Amal Zidi, Florian Ferreira, Arnaud Sevin, Caroline Kulcsár, Henri-François Raynaud, Yann Clénet, Richard Davies

Author Affiliations +

Proceedings Volume 12185, Adaptive Optics Systems VIII; 121855O (2022) https://doi.org/10.1117/12.2629308
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada

Conference Poster

Abstract

MICADO is the ELT near-infrared first light imager. It will provide diffraction limited images thanks to single-conjugate adaptive optics (SCAO) mode provided inside the MAORY module. Numerical simulations were performed using COMPASS to assess the overall SCAO performance, exploring WFS design parameters and associated calibration procedures.

We present the optimizations developed to deal with pyramid wavefront sensor specific calibrations expected at the ELT (optimal modal basis, petalling, optical gains & NCPA management,). We then evaluate the impact of the AO loop frequency and RTC latency and others specific SCAO optimization parameters (modulation amplitude, number of controlled modes, etc) in various flux and turbulence conditions. We finally evaluate the impact of some of the ELT errors contributors such as M1 reflectivity errors, M1 phase aberrations, M1 missing segments, M4 mis-registration, telescope windshake & vibrations.

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Fabrice Vidal, Nicolas Galland, Arielle Bertrou-Cantou, Eric Gendron, Vincent Deo, Amal Zidi, Florian Ferreira, Arnaud Sevin, Caroline Kulcsár, Henri-François Raynaud, Yann Clénet, and Richard Davies "The MICADO first light imager for the ELT: FDR numerical simulations for the SCAO mode", Proc. SPIE 12185, Adaptive Optics Systems VIII, 121855O (29 August 2022); https://doi.org/10.1117/12.2629308

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