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24 September 2012 Gemini high-resolution optical spectrograph conceptual design
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Abstract
A multiplexed moderate resolution (R = 34,000) and a single object high resolution (R = 90,000) spectroscopic facility for the entire 340 - 950nm wavelength region has been designed for Gemini. The result is a high throughput, versatile instrument that will enable precision spectroscopy for decades to come. The extended wavelength coverage for these relatively high spectral resolutions is achieved by use of an Echelle grating with VPH cross-dispersers and for the R = 90,000 mode utilization of an image slicer. The design incorporates a fast, efficient, reliable system for acquiring targets over the7 arcmin field of Gemini. This paper outlines the science case development and requirements flow-down process that leads to the configuration of the HIA instrument and describes the overall GHOS conceptual design. In addition, this paper discusses design trades examined during the conceptual design study instrument group of the Herzberg Institute of Astrophysics has been commissioned by the Gemini Observatory as one of the three competing organizations to conduct a conceptual design study for a new Gemini High-Resolution Optical Spectrograph (GHOS). This paper outlines the science case development and requirements flow-down process that leads to the configuration of the HIA instrument and describes the overall GHOS conceptual design. In addition, this paper discusses design trades examined during the conceptual design study.
© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Kei Szeto, Alan McConnachie, André Anthony, David Bohlender, David Crampton, Pierre Desaulniers, Jennifer Dunn, Tim Hardy, Alexis Hill, Dmitry Monin, John Pazder, Christian Schwab, Paola Spano, Else Starkenburg, Simon Thibault, Gordon Walker, Kim Venn, and Hu Zhang "Gemini high-resolution optical spectrograph conceptual design", Proc. SPIE 8446, Ground-based and Airborne Instrumentation for Astronomy IV, 844635 (24 September 2012); https://doi.org/10.1117/12.926690
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