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Communication Dans Un Congrès Année : 2019

Gemini North Adaptive Optics (GNAO): an MCAO system for Gemini North towards Conceptual Design

Gaetano Sivo
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Julia Scharwächter
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Marcos van Dam
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Thomas Puzia
Benoit Neichel

Résumé

Gemini Observatory has been awarded from the National Science Foundation a major fund to build a new state-of-the-art Multi Conjugate Adaptive Optics facility for Gemini North on Maunakea called GNAO. The current Telephone: 1+56 51 2205 642 baseline system will use two lasers each split in two to create an artificial constellation of four laser guide star to measure the distortions caused by the atmosphere. At least two deformable mirror conjugated to 0km and the main altitude layer above Maunakea will be used to correct these distortions. The facility will be designed to feed future instrumentation, initially a near infrared imager and potentially a visiting 4-arm multi object adaptive optics IFU spectrograph. 1 In this paper I will present the main characteristics of this exciting facility, its promises and its challenges. I will also present its conceptual design and results of trade studies conducted within the team and the Gemini Adaptive Optics Working Group. The expected first light is for October 2024.
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Dates et versions

hal-02862325 , version 1 (09-06-2020)

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  • HAL Id : hal-02862325 , version 1

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Gaetano Sivo, David Palmer, Julia Scharwächter, Morten Andersen, Natalie Provost, et al.. Gemini North Adaptive Optics (GNAO): an MCAO system for Gemini North towards Conceptual Design. 6th International Conference on Adaptive Optics for Extremely Large Telescopes, AO4ELT 2019, Jun 2019, Quebec City, Canada. ⟨hal-02862325⟩
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