Development of a calibration system for the FTIR in the FASA project.

FASA stands for Fire Airborne Simulator Arrangement. It consists in a bi-spectral imager and high-resolution FTIR-spectrometer (Fourier Transform Infrared spectrometer), named MIROR to be flown on Donier 228. The scientific objectives of FASA are to determine the spectrum of electromagnetic radiation ( spectral range 3-16um) of high temperature events as wild fires and volcanoes. In this paper we show the features of the Calibration Unit and the new optical configuration that was developed in order to adapt the instrument on the aircraft. We illustrate the new mechanic concept of Calibration Unit and the software procedures for automatic calibration and data acquisition on board Moreover preliminary test results are presented .