New type of optical fiber positioning unit device for LAMOST

Hongzhuan Hu; Xiaozheng Xing; Chao Zhai; Weimin Li

doi:10.1117/12.458000

4 February 2003 New type optical fiber positioning unit device for LAMOST

Hongzhuan Hu, Xiaozheng Xing, Chao Zhai, Weimin Li

Author Affiliations +

Proceedings Volume 4837, Large Ground-based Telescopes; (2003) https://doi.org/10.1117/12.458000
Event: Astronomical Telescopes and Instrumentation, 2002, Waikoloa, Hawai'i, United States

Abstract

This paper proposes an optical fiber positioning unit device for LAMOST(Large Area Multi-Object Fiber Spectroscope Telescope), It consists of a central shaft revolving mechanism, and eccentric shaft revolving mechanism relative to central shaft. The central shaft turns round at the range of -180° to +180° and the eccentric shaft turns round at the range of -90° to +90° driving by each control motor. When positioning, the optical fiber end moves on the focal plate throughout, and can never deviate from focal plane. It has simple structure, could be machined and assembled and taken down easily and could be ensured machining practices easily, so could be reduced manufacture costs. The unit sets mechanical electrical zero position detecting device to reduce the accumulate error of multi-positioning. Testing result have demonstrated this new double revolving optical fiber positioning unit device can accord with the demand of LAMOST entirely.

Citation Download Citation

Hongzhuan Hu, Xiaozheng Xing, Chao Zhai, and Weimin Li "New type optical fiber positioning unit device for LAMOST", Proc. SPIE 4837, Large Ground-based Telescopes, (4 February 2003); https://doi.org/10.1117/12.458000

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