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Proceedings Paper

Design of a multifunction astronomical CCD camera
Author(s): Dalei Yao; Desheng Wen; Jianru Xue; Zhi Chen; Yan Wen; Baotan Jiang; Jiangbo Xi
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Paper Abstract

To satisfy the requirement of the astronomical observation, a novel timing sequence of frame transfer CCD is proposed. The multiple functions such as the adjustments of work pattern, exposure time and frame frequency are achieved. There are four work patterns: normal, standby, zero exposure and test. The adjustment of exposure time can set multiple exposure time according to the astronomical observation. The fame frequency can be adjusted when dark target is imaged and the maximum exposure time cannot satisfy the requirement. On the design of the video processing, offset correction and adjustment of multiple gains are proposed. Offset correction is used for eliminating the fixed pattern noise of CCD. Three gains pattern can improve the signal to noise ratio of astronomical observation. Finally, the images in different situations are collected and the system readout noise is calculated. The calculation results show that the designs in this paper are practicable.

Paper Details

Date Published: 6 July 2015
PDF: 8 pages
Proc. SPIE 9631, Seventh International Conference on Digital Image Processing (ICDIP 2015), 96310X (6 July 2015); doi: 10.1117/12.2197105
Show Author Affiliations
Dalei Yao, Xi'an Jiaotong Univ. (China)
Xi'an Institute of Optics and Precision Mechanics (China)
Univ. of Chinese Academy of Sciences (China)
Desheng Wen, Xi'an Institute of Optics and Precision Mechanics (China)
Jianru Xue, Xi’an Jiaotong Univ. (China)
Zhi Chen, Xi'an Institute of Optics and Precision Mechanics (China)
Yan Wen, Xi'an Institute of Optics and Precision Mechanics (China)
Baotan Jiang, Xi'an Institute of Optics and Precision Mechanics (China)
Jiangbo Xi, Xi'an Institute of Optics and Precision Mechanics (China)


Published in SPIE Proceedings Vol. 9631:
Seventh International Conference on Digital Image Processing (ICDIP 2015)
Charles M. Falco; Xudong Jiang, Editor(s)

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