The Design and Implementation of Spectropolarimetric Observation Mode at 1-Meter New Vacuum Solar Telescope

Chen Yuchao; Xu Zhi; Li Zhenggang; Yuan Shu; Liu Guangqian; Xu Jun; Jin Zhenyu

Astronomical Research and Technology > 2018 > 15(4): 423-431.

Chen Yuchao, Xu Zhi, Li Zhenggang, Yuan Shu, Liu Guangqian, Xu Jun, Jin Zhenyu. The Design and Implementation of Spectropolarimetric Observation Mode at 1-Meter New Vacuum Solar Telescope[J]. Astronomical Research and Technology, 2018, 15(4): 423-431.

Citation:

PDF (2760 KB)

The Design and Implementation of Spectropolarimetric Observation Mode at 1-Meter New Vacuum Solar Telescope

1. University of Chinese Academy of Sciences, Beijing 100049, China;
2. Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, China

More Information

Received Date: January 23, 2018
Revised Date: March 11, 2018
Available Online: November 20, 2023

Graphical Abstract

Abstract

Abstract

As one of the observation terminals of the 1-meter New Vacuum Solar Telescope (NVST) at Fuxian-Lake, the multi-band spectrometer is required to have two observation modes, ie, spatial 2D scanning observation and spectropolarimetric measurement, as to achieve diagnosis of solar vector magnetic field and its dynamic characteristics. The work of this paper is closely related to how to structure and realize the above two observation modes. Firstly, the basic requirements in observation modes of the three important photoelectric mechanisms (spatial scanning mechanism, polarization analyzer, and instrument polarization calibration mechanism) are made clear. Second, from practical solar physics requirements, the specific implementation methods of these requirements (continuous or step-by-step), control accuracy (10^-2 or 10^-3), and signal-to-noise ratio improvement method (multi-frame superposition or multi-group superposition), are analyzed. Finally, flow charts of various observation modes are summarized, and different observation modes are integrated into one sampling control program which is put into practical measurement. Multiple groups of 2-D spatial scanning observations and sunspot spectropolarimetric measurement are carried out with good results achieved.
- Solar spectrum,
- Spectropolarimetric observation mode,
- Raster spectroscopy,
- Observation mode

FullText(HTML)

References (6)

References

[1]	Liu Z, Xu J, Gu B Z, et al. New Vacuum Solar Telescope and observations with high resolution[J]. Research in Astronomy and Astrophysics, 2014, 14(6):705-718.
[2]	Wang R, Xu Z, Jin Z Y, et al. The first observation and data reduction of the multi-wavelength spectrometer on the New Vacuum Solar Telescope[J]. Research in Astronomy and Astrophysics, 2013, 13(10):1240-1254.
[3]	艾国祥, 胡岳风. 太阳磁场望远镜的工作原理[J]. 天文学报, 1986, 27(2):173-180. Ai Guoxiang, Hu Yuefeng. On principle of Solar Magnetic Field Telescope[J]. Acta Astronomic Sinca, 1986, 27(2):173-180.
[4]	杨长春, 李正刚, 陈宇超, 等. 一米新真空太阳望远镜光谱扫描观测系统设计[J]. 天文研究与技术, 2016, 13(2):257-265. Yang Changchun, Li Zhenggang, Chen Yuchao, et al. The design of a spectrum scanning observation system for the New Vacuum Solar Telescope[J]. Astronomical Research & Technology, 2016, 13(2):257-265.
[5]	陈宇超, 柳光乾. NVST的长期跟踪误差分析及改正[J]. 天文研究与技术, 2016, 13(2):205-212. Chen Yuchao, Liu Guangqian. The error analysis and correction of NVST's long-term tracking[J]. Astronomical Research & Technology, 2016, 13(2):205-212.
[6]	Cai Y F, Xu Z, Chen Y C, et al. Composingmethod for the two-dimensional scanning spectra observed by the New Vacuum Solar Telescope[J]. Research in Astronomy and Astrophysics, 2018, 18(4):61-70.

Articles Related

[1]	Chen Wen, Wang Min. Observation of Radio Stars Del Lib and HR 1099 Using Piggy-back Phase Referencing Mode in Geodetic Observation [J]. Astronomical Techniques and Instruments, 2023, 20(5): 412-420. DOI: 10.14005/j.cnki.issn1672-7673.20230627.001
[2]	Yang Changchun, Li Zhenggang, Chen Yuchao, Xu Jun. The Design of a Spectrum Scanning Observation System for the New Vacuum Solar Telescope [J]. Astronomical Research and Technology, 2016, 13(2): 257-265.
[3]	LIU Li-jia, PENG Bo. Reduction of Data of Interplanetary Scintillations Observed at a Single Station with a Single-Frequency Mode [J]. Astronomical Research and Technology, 2010, 7(1): 21-26.
[4]	ZHONG Shu-hua, WANG Qiong-zhen. Discussion on the Optimal Duration of Solar Spectral Observation at the Phoenix Mountain of Yunnan Observatory [J]. Astronomical Research and Technology, 2003, 0(4): 8-11.
[5]	CAO Wen-da. Study of Solar Observational Techniques and Methods in the Infrared [J]. Publications of the Yunnan Observatory, 2002, 0(1): 64-66.
[6]	Li Rufeng, Bi Shaolan, Dun Jinping. Observation and Research on the Twisting Characteristics of Flare Loop System [J]. Publications of the Yunnan Observatory, 1999, 0(S1): 437-440.
[7]	Qu Z. Q., Chen X. K., Zhang X. Y., Gu X. M., Feng Y. M., Zhong S. H.. Solar Stokes Spectrum Observation at Yunnan Astronomical Observatory [J]. Publications of the Yunnan Observatory, 1999, 0(S1): 278-281.
[8]	Liu Zizhong, Luan Di, Shang Qiongzhen. The Seeing Observation at Gaomeigu Station [J]. Publications of the Yunnan Observatory, 1999, 0(S1): 147-152.
[9]	Zhang Heng, Cao Ying, Kong Yongjing. The Observations of p -Modes/s-Modes conversion in the Magnetic Field and Absorption of p-Mode by the Sunspot [J]. Publications of the Yunnan Observatory, 1997, 0(2): 21-39.
[10]	Xie Ruixiang, Yang Kaiping, Li Weihua, Chen Guoqiang, Ma Yuan, Zhang Fan, Zhao Risheng. Construction of Synchronous Observation System of Solar Radio Activity With High Time Resolution by Single Frequency Mode [J]. Publications of the Yunnan Observatory, 1988, 0(2): 45-53.