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Key Words: Space telescope, Solar observations, Mechanisms, Lubricant, Contamination

Abstract We are under development of two types of mechanisms, i.e., a rotation mechanism for polarization modulator and a focus translation mechanism, for the SOLAR-C SUVIT telescope and its spectrograph package. Since the telescope is a contamination-sensitive instrument, reducing molecular outgas from the materials used in the mechanisms has been considered in detailed designs of the mechanisms, with having repeated experimental measurements of outgas rate in the vacuum environment. This paper presents the development efforts of the mechanisms from viewpoint of contamination control and we will discuss some issues rising from the development efforts.

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