Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005pasp..117..870w&link_type=abstract
The Publications of the Astronomical Society of the Pacific, Volume 117, Issue 834, pp. 870-884.
Astronomy and Astrophysics
Astronomy
30
Infrared: General, Instrumentation: Polarimeters, Instrumentation: Spectrographs
Scientific paper
We present the design, construction, and performance of TRISPEC (Triple Range Imager and Spectrograph), a simultaneous optical and near-infrared imager, spectrograph, and polarimeter. This instrument splits the incoming light from a telescope into the three beams-one optical channel (0.45-0.90 μm) and two infrared channels (0.90-1.85 and 1.85-2.5 μm)-by means of two dichroic mirrors. It is capable of simultaneous three-band imaging or spectroscopy, with or without polarimetry. Low-resolution grisms (R~70-360) cover a wide wavelength range of 0.46-2.5 μm, simultaneously. The instrument employs three arrays-one 512×512 SITe CCD and two 256×256 SBRC InSb arrays-to cover the three channels. It has been commissioned in the imaging, spectroscopic, and polarimetric modes on the United Kingdom Infrared Telescope, the University of Hawaii 2.2 m telescope, and the Okayama Astrophysical Observatory 1.88 m telescope since 1999 June.
Chrysostomou Antonio
Ebizuka Noboru
Hirao Takanori
Hough James H.
Ijiri Ryuta
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