7 March 2003 Development of a mid-infrared high dispersion spectrograph (IRHS) for the Subaru telescope
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Abstract
A design of prototype Infra-Red High-dispersion Spectrograph (IRHS) is described. IRHS is a cryogenic echelle spectrometer for 8.2-m Subaru Telescope, which will operate at 8 to 13 μm with resolving power of 200,000. To achieve such a high dispersion and broad bandwidth, a Germanium immersion echelle grating was adopted. As a preliminary step, we started to develop the proto-type of IRHS (ProtoIRHS) with currently available Ge immersion grating (30x30x72 mm) and one 512x412 Si:As impurity band detector array, which will provide the maximum resolving power of 50,000 at 10 μm with slit width of 0.612 arcseconds (0.48 mm) and two-pixels sampling.
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Hitoshi Tokoro, Hitoshi Tokoro, Masashi Atarashi, Masashi Atarashi, Masako Omori, Masako Omori, Takashi Machida, Takashi Machida, Shigeyuki Hirabayashi, Shigeyuki Hirabayashi, Hideomi Kobayashi, Hideomi Kobayashi, Yasuhiro Hirahara, Yasuhiro Hirahara, Tadashi Masuda, Tadashi Masuda, Noboru Ebizuka, Noboru Ebizuka, Kentaro Kawaguchi, Kentaro Kawaguchi, } "Development of a mid-infrared high dispersion spectrograph (IRHS) for the Subaru telescope", Proc. SPIE 4841, Instrument Design and Performance for Optical/Infrared Ground-based Telescopes, (7 March 2003); doi: 10.1117/12.461936; https://doi.org/10.1117/12.461936
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