Abstract: In view of the characteristics of the imaging spectrometer, a telescope system applied to the imaging spectrometer was designed, which was composed of a pre-telescope and post spectrometer. Pre-telescope system parameters and imaging quality of the application of the imaging spectrometer is very important. Designed a spectral range of 1-2.5 m, field of view of 28.10.3, a relatively large diameter of 1/4, 60 mm focal length of the telescope system. Systems in a wide spectral 1-2.5 m spectral range by the glass and two matching spectral correction of chromatic aberration, distortion control at 0.2%, to ensure good follow-up spectroscopy with the butt, could be used for aviation the large field, high-resolution imaging.