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Proceedings Paper

The M2&M3 positioning control systems of a 2.5m telescope
Author(s): Yu Ye; Chong Pei; Zhiyong Zhang; Bozhong Gu
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Paper 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.

Paper Details

Date Published: 17 September 2012
PDF: 9 pages
Proc. SPIE 8444, Ground-based and Airborne Telescopes IV, 84444X (17 September 2012); doi: 10.1117/12.925092
Show Author Affiliations
Yu Ye, Nanjing Institute of Astronomical Optics & Technology (China)
Graduate Univ. of Chinese Academy of Sciences (China)
Chong Pei, Nanjing Institute of Astronomical Optics & Technology (China)
Graduate Univ. of Chinese Academy of Sciences (China)
Zhiyong Zhang, Nanjing Institute of Astronomical Optics & Technology (China)
Bozhong Gu, Nanjing Institute of Astronomical Optics & Technology (China)


Published in SPIE Proceedings Vol. 8444:
Ground-based and Airborne Telescopes IV
Larry M. Stepp; Roberto Gilmozzi; Helen J. Hall, Editor(s)

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