Thermal management for CCD peformance of one space telescope

Wengang Yang; Yinghao Wang; Liangjie Feng; Chenjie Wang; Guorui Ren; Wei Wang; Chuang Li; Wei Gao; Xuewu Fan

doi:10.1117/12.971510

15 October 2012 Thermal management for CCD peformance of one space telescope

Wengang Yang, Yinghao Wang, Liangjie Feng, Chenjie Wang, Guorui Ren, Wei Wang, Chuang Li, Wei Gao, Xuewu Fan

Proceedings Volume 8420, 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing; 84200P (2012) https://doi.org/10.1117/12.971510
Event: 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT 2012), 2012, Xiamen, China

Abstract

A space telescope containing two CCD cameras is being built for scientific observation. The CCD detectors need to operate at a temperature below -65°C in order to avoid unacceptable dark current. This cooling is achieved through detailed thermal design which minimizes the parasitic load to 2K×4K array with 13.5 micron pixels and cools this detector with a combination of thermo electric cooler(TEC). This paper will describe detailed thermal design necessary to maintain the CCD at its cold operating temperature while providing the means to reject the heat generated by the TECs. It will focus on optimized techniques developed to manage parasitic loads including material selection, surface finishes and thermal insulation. The paper will also address analytical techniques developed to characterize TEC performance. Finally, analysis results have been shown the temperature of key parts.

Citation Download Citation

Wengang Yang, Yinghao Wang, Liangjie Feng, Chenjie Wang, Guorui Ren, Wei Wang, Chuang Li, Wei Gao, and Xuewu Fan "Thermal management for CCD peformance of one space telescope", Proc. SPIE 8420, 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing, 84200P (15 October 2012); https://doi.org/10.1117/12.971510

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KEYWORDS

Charge-coupled devices

Space telescopes

Heat flux

Sensors

Sun

Electronics

Surface finishing

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