The Adaptive Optics System for the Gemini Infrared Multi-Object Spectrograph: Performance Modeling

• Type: Article in International Scientific Journal
• Date: 2023

Authors

Conod, U (Author) Other; Jackson, K (Author) Other; Turri, P (Author) Other; Chapman, S (Author) Other; Lardière, O (Author) Other; Lamb, M (Author) Other; Correia, C (Author) FEUP; Sivo, G (Author) Other; Sivanandam, S (Author) Other; Véran, JP (Author) Other

Journal

Title: Publications of the Astronomical Society of the Pacific

Vol. 135

ISSN: 0004-6280

Publisher: Institute of Physics Publishing

Indexing

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Other information

Authenticus ID: P-00Z-BTS

DOI: 10.1088/1538-3873/acf61c

Abstract (EN): The Gemini Infrared Multi-Object Spectrograph (GIRMOS) will be a near-infrared, multi-object, medium spectral resolution, integral field spectrograph (IFS) for Gemini North Telescope, designed to operate behind the future Gemini North Adaptive Optics system (GNAO). In addition to a first ground layer Adaptive Optics (AO) correction in closed loop carried out by GNAO, each of the four GIRMOS IFSs will independently perform additional multi-object AO correction in open loop, resulting in an improved image quality that is critical to achieve top level science requirements. We present the baseline parameters and simulated performance of GIRMOS obtained by modeling both the GNAO and GIRMOS AO systems. The image quality requirement for GIRMOS is that 57% of the energy of an unresolved point-spread function ensquared within a 0.1 x 0.1 arcsecond at 2.0 mu m. It was established that GIRMOS will be an order 16 x 16 adaptive optics (AO) system after examining the tradeoffs between performance, risks and costs. The ensquared energy requirement will be met in median atmospheric conditions at Maunakea at 30 degrees from zenith.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 13