MISTRAL main characteristics
MISTRAL is a spectro-imager adapted to the folded-Cassegrain focus of the 1.93m telescope via a focal reducer. The focal reducer allows to pass from a f-number F/15 to F/6. At the exit of the spectro-imager, the f-number is F/3. The entrance slit is presently 112 microns wide, translating to 1.9 arcsec on the sky. Main characteristics are given below.