Structural Design for Lightweight Off-Axis TMA Space Telescope

A kind of small space telescope with 1m focal length was designed. By adopting finite element analysis technique, the structure of the space telescope was analyzed. The analysis results indicate that the surface profile accuracy of the mirrors reach to RMS 8.0nm with the working circumstances ± 4°C uniform temperature change and space micro-gravity, the base frequency of the structure was 115 Hz. It shows that the designed structure has sufficiently high dynamic and static stiffness and thermal dimensional stability. This space optical telescope is very suitable for Little satellite application.