The multi-object adaptive optics system for the Gemini Infra-Red Multi-Object Spectrograph

Scott C. Chapman; Uriel Conod; Paolo Turri; Kate Jackson; Olivier Lardiere; Suresh Sivanandam; David Andersen; Carlos Correia; Masen Lamb; Colin Ross; Gaetano Sivo; Jean-Pierre Veran

doi:10.1117/12.2630645

29 August 2022 The multi-object adaptive optics system for the Gemini Infra-Red Multi-Object Spectrograph

Scott C. Chapman, Uriel Conod, Paolo Turri, Kate Jackson, Olivier Lardiere, Suresh Sivanandam, David Andersen, Carlos Correia, Masen Lamb, Colin Ross, Gaetano Sivo, Jean-Pierre Veran

Author Affiliations +

Proceedings Volume 12185, Adaptive Optics Systems VIII; 121853F (2022) https://doi.org/10.1117/12.2630645
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada

Abstract

The Gemini Infra-Red Multi-Object Spectrograph (GIRMOS) is a four-arm, Multi-Object Adaptive Optics (MOAO) IFU spectrograph being built for Gemini (commissioning in 2024). GIRMOS is being planned to interface with the new Gemini-North Adaptive Optics (GNAO) system, and is base lined with a requirement of 50% EE within a 0.100 spaxel at H-band. We present a design and forecast the error budget and performance of GIRMOS-MOAO working behind GNAO. The MOAO system will patrol the 20 field of regard of GNAO, utilizing closed loop GLAO or MCAO for lower order correction. GIRMOS MOAA will perform tomographic reconstruction of the turbulence using the GNAO WFS, and utilize order 16x16 actuator DMs operating in open loop to perform an additional correction from the Pseudo Open Loop (POL) slopes, achieving close to diffraction limited performance from the combined GNAO+MOAO correction. This high performance AO spectrograph will have the broadest impact in the study of the formation and evolution of galaxies, but will also have broad reach in fields such as star and planet formation within our Milky Way and supermassive black holes in nearby galaxies.

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Scott C. Chapman, Uriel Conod, Paolo Turri, Kate Jackson, Olivier Lardiere, Suresh Sivanandam, David Andersen, Carlos Correia, Masen Lamb, Colin Ross, Gaetano Sivo, and Jean-Pierre Veran "The multi-object adaptive optics system for the Gemini Infra-Red Multi-Object Spectrograph", Proc. SPIE 12185, Adaptive Optics Systems VIII, 121853F (29 August 2022); https://doi.org/10.1117/12.2630645

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KEYWORDS

Adaptive optics

Gemini Observatory

Spectrographs

Astronomical imaging

Device simulation

Real-time computing

Stars

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