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Proceedings Paper

Electronic control design of a two-channel imaging system of a 1.2-meter-aperture telescope
Author(s): Jin-ting Chen; Hong-fei Zhang; Ming-hao Jia; Ya-qi Chen; Yi-ling Xu; Guang-yu Zhang; Yi Feng; Zhen-feng Sheng; Chen-wei Yang; Liang Xu; Yong-chao Ding; Liang Chang; Jian Wang
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Paper Abstract

The Astronomical Imaging System of a 1.2-meter-aperture Telescope is a multi-band imaging system with red and blue channels. The mass and structure of AGN central black hole are studied by observing the change of AGN spectral line. We designed an optical system with dual channels, changing the focal length ratio of telescope from f/8.429 to f/5 through the lens, and divide the optical path into red and blue channels through the beam splitter. The red waveband is 650nm1000nm and the blue waveband is 400nm-650nm. Each channel has a CCD camera. We set up focusing lens before the camera of blue channel to compensate the difference focusing length between red and blue channel after the red channel being focused by adjusting the telescope. For the realization of three groups of broadband photometry and twenty-four groups of narrowband photometry, an automatic filter wheel system is designed to switch the filter. At the same time, in order to reduce the influence of temperature drift of the filter, a constant temperature adjusting system for filter wheel box is carried out. In order to overcome the issue that the telescope itself does not have enough tracking accuracy, a guiding system for the imaging system is designed and implemented. Finally, we designed and implemented a multi-level software control system so that the users can remotely control the telescope.

Paper Details

Date Published: 6 July 2018
PDF: 7 pages
Proc. SPIE 10700, Ground-based and Airborne Telescopes VII, 107003B (6 July 2018); doi: 10.1117/12.2312381
Show Author Affiliations
Jin-ting Chen, Univ. of Science and Technology of China (China)
Hong-fei Zhang, Univ. of Science and Technology of China (China)
Ming-hao Jia, Univ. of Science and Technology of China (China)
Ya-qi Chen, Univ. of Science and Technology of China (China)
Yi-ling Xu, Univ. of Science and Technology of China (China)
Guang-yu Zhang, Univ. of Science and Technology of China (China)
Yi Feng, Univ. of Science and Technology of China (China)
Zhen-feng Sheng, Univ. of Science and Technology of China (China)
Chen-wei Yang, Univ. of Science and Technology of China (China)
Liang Xu, Yunnan Observatories (China)
Yong-chao Ding, Yunnan Observatories (China)
Liang Chang, Yunnan Observatories (China)
Jian Wang, Univ. of Science and Technology of China (China)


Published in SPIE Proceedings Vol. 10700:
Ground-based and Airborne Telescopes VII
Heather K. Marshall; Jason Spyromilio; Roberto Gilmozzi, Editor(s)

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