Poster + Paper
29 August 2022 GMTNIRS optical system design
Author Affiliations +
Conference Poster
Abstract
GMTNIRS, the Giant Magellan Telescope Near-Infrared Spectrograph, is a high resolution (R=65,000~80,000) near-infrared spectrograph selected as a first-generation instrument for the Giant Magellan Telescope. The instrument covers J, H, K, L, and M spectral bands in a single shot through 6-channel spectrographs. The L band is shared by two channels. Thanks to the use of silicon immersion gratings, the design is compact for its capability. GMTNIRS will be located on the GMT instrument rotator upper disk and operating in adaptive optics mode. We detail the optical system design, imaging performance, spectral formats, and fabrication/alignment budget.
© (2022) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Hanshin Lee, Greg Mace, Cynthia Brooks, John Good, Sungho Lee, Sanghyuk Kim, Chan Park, Woojin Park, Heeyong Oh, Ueejeong Jeong, Moo Young Chun, Alycia J. Weinberger, and Daniel T. Jaffe "GMTNIRS optical system design", Proc. SPIE 12184, Ground-based and Airborne Instrumentation for Astronomy IX, 121843I (29 August 2022); https://doi.org/10.1117/12.2630274
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KEYWORDS
Spectrographs

Optical design

Adaptive optics

Diffraction

Image quality

Relays

Tolerancing

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