The improvement of LAMOST fiber view camera metrology system fiber position recognition algorithm

Kang Zhao; Zhigang Liu; Hongzhuan Hu; Jianping Wang; Chao Zhai; Zengxiang Zhou

doi:10.1117/12.2309750

9 July 2018 The improvement of LAMOST fiber view camera metrology system fiber position recognition algorithm

Kang Zhao, Zhigang Liu, Hongzhuan Hu, Jianping Wang, Chao Zhai, Zengxiang Zhou

Proceedings Volume 10702, Ground-based and Airborne Instrumentation for Astronomy VII; 1070277 (2018) https://doi.org/10.1117/12.2309750
Event: SPIE Astronomical Telescopes + Instrumentation, 2018, Austin, Texas, United States

Abstract

The LAMOST telescope has been officially observed for the past seven years since 2009, and many parts of the telescope are currently being upgraded. The fiber positioning unit of the focal plane instrument is also planned to be upgraded again. In order to ensure a higher positioning accuracy of the fiber positioning unit, the newly developed fiber positioning system adopts a closed-loop camera to photograph the unit fiber position in real time, and feeds back to the control system to implement multiple positioning to improve the positioning accuracy. This article focuses on an improved optical center of gravity algorithm for optical fiber location based on the optical center of gravity algorithm. The factors affecting the position measurement of the optical fiber spot are optimized, and the recognition accuracy of the spot position under different conditions is improved.

Citation Download Citation

Kang Zhao, Zhigang Liu, Hongzhuan Hu, Jianping Wang, Chao Zhai, and Zengxiang Zhou "The improvement of LAMOST fiber view camera metrology system fiber position recognition algorithm", Proc. SPIE 10702, Ground-based and Airborne Instrumentation for Astronomy VII, 1070277 (9 July 2018); https://doi.org/10.1117/12.2309750

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