CASPIR: A cryogenic array spectrometer/imager for the MSSSO 2.3 M telescope

Details CASPIR: A cryogenic array spectrometer/imager for the MSSSO 2.3 M telescope CASPIR: A cryogenic array spectrometer/imager for the MSSSO 2.3 M telescope

Mar 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994exa.....3..139m&link_type=abstract

Experimental Astronomy, vol. 3, no. 1-4, p. 139-140

Astronomy and Astrophysics

Astronomy

15

Arrays, Astronomical Polarimetry, Coronagraphs, Cryogenic Equipment, Infrared Detectors, Infrared Spectrometers, Infrared Telescopes, Near Infrared Radiation, Polarimeters, Astronomical Spectroscopy, Design Analysis, Indium Antimonides, Infrared Astronomy

Scientific paper

A new near-infrared cryogenic array spectrometer/imager (CASPIR) is being built for the Mount Stromlo and Siding Spring Observatories' 2.3 m telescope. The instrument is based on a SBRC 256 x 256 InSb detector array and uses AR-coated Sapphire, MgO, CaF2, and BaF2 optics to produce two imaging focal plane scales with 0.5 sec/pixel and 0.25 sec/pixel. Spectral resolving powers of approximately 500 will be achieved through a 1 sec x 128 sec slit with three grisms designed for the J, H, and K bands. IJ, JH, and HK cross-dispersed echelle grisms will achieve resolving powers of approximately 1100 through a 1 sec x 15 sex slit. Coronograph and imaging polarimetry modes will also be available. The various observing configurations are selected via five remotely controlled wheels. The instrument design and system architecture are discussed, and preliminary detector performance figures reported.

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