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Proceedings Paper

Circuit design of an EMCCD camera
Author(s): Binhua Li; Qian Song; Jianhui Jin; Chun He
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Paper Abstract

EMCCDs have been used in the astronomical observations in many ways. Recently we develop a camera using an EMCCD TX285. The CCD chip is cooled to −100°C in an LN2 dewar. The camera controller consists of a driving board, a control board and a temperature control board. Power supplies and driving clocks of the CCD are provided by the driving board, the timing generator is located in the control board. The timing generator and an embedded Nios II CPU are implemented in an FPGA. Moreover the ADC and the data transfer circuit are also in the control board, and controlled by the FPGA. The data transfer between the image workstation and the camera is done through a Camera Link frame grabber. The software of image acquisition is built using VC++ and Sapera LT. This paper describes the camera structure, the main components and circuit design for video signal processing channel, clock driver, FPGA and Camera Link interfaces, temperature metering and control system. Some testing results are presented.

Paper Details

Date Published: 25 September 2012
PDF: 8 pages
Proc. SPIE 8453, High Energy, Optical, and Infrared Detectors for Astronomy V, 84532O (25 September 2012); doi: 10.1117/12.925653
Show Author Affiliations
Binhua Li, Kunming Univ. of Science and Technology (China)
Qian Song, National Astronomical Observatories (China)
Jianhui Jin, Kunming Univ. of Science and Technology (China)
Chun He, Kunming Univ. of Science and Technology (China)

Published in SPIE Proceedings Vol. 8453:
High Energy, Optical, and Infrared Detectors for Astronomy V
Andrew D. Holland; James W. Beletic, Editor(s)

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