Ground and Space-Based Telescopes

1.8-m solar telescope in China: Chinese Large Solar Telescope

[+] Author Affiliations
Changhui Rao, Naiting Gu, Lei Zhu, Cheng Li, Hao Xian, Hua Bao, Xiaojun Zhang, Chunlin Guan, Donghong Chen, Mei Li

Chinese Academy of Sciences, The Institute of Optics and Electronics, No. 1 Guangdian Road, Shuangliu County, Chengdu 610209, China

Chinese Academy of Sciences, The Key Laboratory on Adaptive Optics, No. 1 Guangdian Road, Shuangliu County, Chengdu 610209, China

Jinlong Huang, Yuntao Cheng, Xuedong Cao, Ming Zhang, Hong Liu, Yongjian Wan, Wenli Ma

Chinese Academy of Sciences, The Institute of Optics and Electronics, No. 1 Guangdian Road, Shuangliu County, Chengdu 610209, China

Yangyi Liu, Lanqiang Zhang

Chinese Academy of Sciences, The Institute of Optics and Electronics, No. 1 Guangdian Road, Shuangliu County, Chengdu 610209, China

Chinese Academy of Sciences, The Key Laboratory on Adaptive Optics, No. 1 Guangdian Road, Shuangliu County, Chengdu 610209, China

The University of Chinese Academy of Sciences, No.19A Yuquan Road, Beijing 100049, China

J. Astron. Telesc. Instrum. Syst. 1(2), 024001 (Feb 24, 2015). doi:10.1117/1.JATIS.1.2.024001
History: Received August 14, 2014; Accepted January 14, 2015
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Abstract.  For better understanding and forecasting of solar activity, high resolution observations for the Sun are needed. Therefore, the Chinese Large Solar Telescope (CLST) with a 1.8-m aperture is being built. The CLST is a classic Gregorian configuration telescope with an open structure, alt-azimuth mount, retractable dome, and a large mechanical de-rotator. The optical system with an all reflective design has a field of view of larger than 3 arc-min. The 1.8-m primary mirror is a honeycomb sandwich fused silica lightweight mirror with an ultra lower expansion material and active cooling. The adaptive optics system will be developed to provide the capability for diffraction-limited observations at visible wavelengths. The CLST design and development phase began in 2011 and 2012, respectively. We plan for the CLST’s start of commission to be in 2017. A multiwavelength tomographic imaging system, ranging from visible to near-infrared, is considered as the first light scientific instrument. The main system configuration and the corresponding postfocal instruments are described. Furthermore, the latest progress and current status of the CLST are also reported.

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© 2015 Society of Photo-Optical Instrumentation Engineers

Citation

Changhui Rao ; Naiting Gu ; Lei Zhu ; Jinlong Huang ; Cheng Li, et al.
"1.8-m solar telescope in China: Chinese Large Solar Telescope", J. Astron. Telesc. Instrum. Syst. 1(2), 024001 (Feb 24, 2015). ; http://dx.doi.org/10.1117/1.JATIS.1.2.024001


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