Abstract
A new infrared photorneter-spectrometer has recently been put into operation on the 2.1-m telescope of the Observatorio Astronomico Nacional in San Pedro Martir, Baja California. The system, which was partially designed and built in our Institute, allows wide-band photometry in the 1 to 20 μm wavelength range and low resolution (λ/Δλ ∼ 100) spectrometry in the 2.0 to 3.9 μm region using InSb photovoltaic and Ge bolometer detectors. The various components of the system are described and tests carried out on the telescope are presented.
