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7 March 2003 Development of a mid-infrared high dispersion spectrograph (IRHS) for the Subaru telescope
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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.
© (2003) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Hitoshi Tokoro, Masashi Atarashi, Masako Omori, Takashi Machida, Shigeyuki Hirabayashi, Hideomi Kobayashi, Yasuhiro Hirahara, Tadashi Masuda, Noboru Ebizuka, and 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);


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