17 September 2012 The M2&M3 positioning control systems of a 2.5m telescope
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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.
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Yu Ye, Yu Ye, Chong Pei, Chong Pei, Zhiyong Zhang, Zhiyong Zhang, Bozhong Gu, 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); doi: 10.1117/12.925092; https://doi.org/10.1117/12.925092
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