This manual describes the operation of CASPIR, the Cryogenic Array Spectrometer/Imager on the ANU 2.3 m telescope at Siding Spring Observatory.

CASPIR uses a Santa Barbara Research Center 256x256 InSb detector array to provide direct imaging and spectroscopic capabilities in the 1-5 micron wavelength range. Two direct imaging focal plane scales of 0.5''/pixel and 0.25''/pixel are available, as well as long slit J, H, and K grisms giving two pixel resolving powers of 500 through a 1x128'' slit, and IJ, JH, and HK cross-dispersed grisms giving two pixel resolving powers of 1100 through a 1x15'' slit. Coronographic functions are also available, and imaging polarimetry is planned.