Observation of sunspots at He i 10830Å using a low-noise InGaAs infrared detector | |
Bai-Chen, Sun3; Yong-Shen, Xiang3; Ming-Gu, Fan2; Xiao-Xi, Gong2; Wang B(王斌)1; Jie, Guo3; Xu FY(许方宇)1 | |
2023 | |
会议日期 | 2022-09-17 |
会议地点 | Nantong, China |
卷号 | 12505 |
DOI | 10.1117/12.2664982 |
英文摘要 | The infrared spectra of the Sun include numerous absorption lines, among which He I 10830 Å is one of the most representative spectral lines in the near-infrared band formed in the high-temperature region of the upper chromosphere. The observation of the spectral lines is important for the solar physics research. In this paper, the monochromatic images of sunspots in the He I 10830 Å spectral line was obtained by the one-meter new vacuum solar telescope at the Fuxian Lake solar observation base. The infrared detector using the domestic InGaAs 640×512 focal plane array device can reach a low dark current of 62e-/s/pixel and readout noise of 25.4 e- at 78K by Stirling cooler. The laboratory tests and actual astronomical observations were completed. In the case of large detector readout noise and dark current, a method of extracting the observation target by effectively calculating the flat field was proposed. A monochromatic image of sunspots with He I 10830 Å is obtained for the first time in China using the self-developed detector. © 2023 SPIE. |
产权排序 | 第2完成单位 |
会议录 | Proceedings of SPIE - The International Society for Optical Engineering |
资助机构 | N/A |
会议录出版者 | SPIE |
文献子类 | Conference article (CA) |
学科主题 | 天文学 ; 太阳与太阳系 ; 太阳与太阳系其他学科 ; 机械工程 ; 仪器仪表技术 ; 光学技术与仪器 ; 天文仪器 |
语种 | 英语 |
URL标识 | 查看原文 |
资助项目 | N/A |
ISSN号 | 0277-786X |
ISBN号 | 9781510661196 |
内容类型 | 会议论文 |
源URL | [http://ir.ynao.ac.cn/handle/114a53/26039] |
专题 | 天文技术实验室 |
作者单位 | 1.Yunnan Astronomical Observatory, Chinese Academy of Sciences, Yunnan, Kunming, 650216, China; 2.Kunming Institute of Physics, Yunnan, Kunming, 650223, China 3.Yunnan Key Laboratory of Opto-Electronic Information Technology, Yunnan Normal University, Kunming, 650500, China; |
推荐引用方式 GB/T 7714 | Bai-Chen, Sun,Yong-Shen, Xiang,Ming-Gu, Fan,et al. Observation of sunspots at He i 10830Å using a low-noise InGaAs infrared detector[C]. 见:. Nantong, China. 2022-09-17. |
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