The M2&amp;M3 positioning control systems of a 2.5m telescope

Yu Ye; Chong Pei; Zhiyong Zhang; Bozhong Gu

doi:10.1117/12.925092

17 September 2012 The M₂&M₃ positioning control systems of a 2.5m telescope

Yu Ye, Chong Pei, Zhiyong Zhang, Bozhong Gu

Proceedings Volume 8444, Ground-based and Airborne Telescopes IV; 84444X (2012) https://doi.org/10.1117/12.925092
Event: SPIE Astronomical Telescopes + Instrumentation, 2012, Amsterdam, Netherlands

Abstract

The 2.5m optical/infrared telescope is an F/8 telescope comprising one Cassegrain foci, two Nasmyth foci and two student Nasmyth foci. This paper presents a brief description of the physical structure, conceptual design, hardware implementing measure and software structure in the positioning control system of M₂&M₃. The graphical user interface application (Qt) is adopted to design the software. During the full working range the M₂ focus and decenter achieve the positioning repeatability is better than ±4μm and the M₂ tilt is better than 10 μrad. The M₃ angular positioning and locking accuracy is better than 10 arcsec and repeatability is better than 2 arcsec RMS.

Citation Download Citation

Yu Ye, Chong Pei, Zhiyong Zhang, and Bozhong Gu "The M₂&M₃ positioning control systems of a 2.5m telescope", Proc. SPIE 8444, Ground-based and Airborne Telescopes IV, 84444X (17 September 2012); https://doi.org/10.1117/12.925092

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