Abstract
To eliminate the mounting stress of three flat reflective mirrors in Balloon-borne Solar Telescope, these optics were attached to their mounts with a thin adhesive layer. This method will also be used in Space Solar Telescope. The primary mirror will be attached to its mount with a thin adhesive layer after first procedure of polishing, then polished to its ultimate demand. In this paper, the theory of adhesive layer analysis is given, and FE model of mirror and its mount is established to analyze the behavior of adhesive layer and the mirror stress. Some experiments are taken to measure Young's modulus of adhesive layer. The possibility of this method in ground-based telescope is also analyzed.
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