Phase A AO system design and performance for MOSAIC at the ELT

MOSAIC is a mixed-mode multiple object spectrograph planned for the ELT that uses a tiled focal plane to support a variety of observing modes. The MOSAIC AO system uses 4 LGS WFS and up to 4 NGS WFS positioned anywhere within the full 10 arcminute ELT field of view to control either the ELT M4/5 alone for GLAO operation feeding up to 200 targets in the focal plane, or M4/5 in conjunction with 10 open-loop DMs for MOAO correction. In this paper we present the overall design and performance of the MOSAIC GLAO and MOAO systems.

[1]  J. Conan,et al.  Tomographic reconstruction for wide-field adaptive optics systems: Fourier domain analysis and fundamental limitations. , 2008, Journal of the Optical Society of America. A, Optics, image science, and vision.

[2]  Marc S. Sarazin,et al.  On the Difference between Seeing and Image Quality: When the Turbulence Outer Scale Enters the Game , 2010 .

[3]  Mark Casali,et al.  AO WFS detector developments at ESO to prepare for the E-ELT , 2016, Astronomical Telescopes + Instrumentation.

[4]  A. Sevin,et al.  Pseudo-analytic simulation of woofer-tweeter MOAO system: application to MOSAIC , 2016, Astronomical Telescopes + Instrumentation.

[5]  Fabrice Madec,et al.  EAGLE: a MOAO fed multi-IFU NIR workhorse for E-ELT , 2010, Astronomical Telescopes + Instrumentation.

[6]  T. Fusco,et al.  EAGLE MOAO system conceptual design and related technologies , 2010, Astronomical Telescopes + Instrumentation.

[7]  Tim Morris,et al.  Wide-field adaptive optics performance in cosmological deep fields for multi-object spectroscopy with the European Extremely Large Telescope , 2014, 1409.7631.

[8]  Gerard Rousset,et al.  The EAGLE instrument for the E-ELT: developments since delivery of Phase A , 2012, Other Conferences.

[9]  Eric Gendron.  Optical solutions for accommodating ELT LGS wave-front sensing to small format detectors , 2016, Astronomical Telescopes + Instrumentation.

[10]  James Osborn,et al.  A modular design for the MOSAIC AO real-time control system , 2018, Astronomical Telescopes + Instrumentation.

[11]  H. Ltaief,et al.  Scalable soft real-time supervisor for tomographic AO , 2018, Astronomical Telescopes + Instrumentation.

[12]  Tim Morris,et al.  Monte-Carlo modelling of multi-object adaptive optics performance on the European Extremely Large Telescope , 2015 .

[13]  Pascal Jagourel,et al.  Adaptive optics for MOSAIC: design and performance of the wide(st)-field AO system for the E-ELT , 2016, Astronomical Telescopes + Instrumentation.

[14]  Gerard Rousset,et al.  Preliminary on-sky results of the CANARY experiment with an ELT-elongated sodium LGS. , 2017 .

[15]  Damien Gratadour.  Green Flash: Exploiting future and emerging computing technologies for AO RTC at ELT scale , 2017 .

[16]  Andreas Kelz,et al.  The ELT-MOS (MOSAIC): towards the construction phase , 2018, Astronomical Telescopes + Instrumentation.