抚仙湖1米新真空太阳望远镜空间二维偏振光谱观测模式的设计与实现
The Design and Implementation of Spectropolarimetric Observation Mode at 1-Meter New Vacuum Solar Telescope
查看参考文献6篇
|
文摘
|
作为抚仙湖1 m新真空太阳望远镜的观测终端之一,多波段光谱仪需具备2种观测模式:空间二维扫描观测及偏振光谱测量,从而实现诊断太阳矢量磁场及其动力学特征的科学目标。首先明确观测模式对3大重要光电机构(空间扫描机构、偏振分析器和仪器偏振定标机构)的基本要求;其次从实测太阳物理需要出发,分析这些要求的具体实现方法(连续式或步进式)、控制精度(10~(-2)或10~(-3))以及信噪比提高方法(多帧叠加或多组叠加)等;最后给出多种观测模式的流程图,并将不同观测模式集成于一个采集控制程序之中,投入实测,分别进行多组活动区二维空间扫描观测和黑子偏振光谱测量,取得了较好的结果。 |
|
其他语种文摘
|
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-tonoise 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. |
|
来源
|
天文研究与技术
,2018,15(4):423-431 【核心库】
|
|
关键词
|
太阳光谱
;
偏振光谱测量
;
空间二维扫描
;
观测模式
|
|
地址
|
1.
中国科学院大学, 北京, 100049
2.
中国科学院云南天文台, 云南, 昆明, 650011
|
|
语种
|
中文 |
|
文献类型
|
研究性论文 |
|
ISSN
|
1672-7673 |
|
学科
|
自动化技术、计算机技术 |
|
基金
|
国家自然科学基金
|
|
文献收藏号
|
CSCD:6342678
|
参考文献 共
6
共1页
|
|
1.
Liu Z. New vacuum solar telescope and observations with high resolution.
Research in Astronomy and Astrophysics,2014,14(6):705-718
|
CSCD被引
78
次
|
|
|
|
|
2.
Wang R. The first observation and data reduction of the Multi-wavelength Spectrometer on the New Vacuum Solar Telescope.
Research in Astronomy and Astrophysics,2013,13(10):1240-1254
|
CSCD被引
23
次
|
|
|
|
|
3.
艾国祥. 太阳磁场望远镜的工作原理.
天文学报,1986,27(2):173-180
|
CSCD被引
13
次
|
|
|
|
|
4.
杨长春. 一米新真空太阳望远镜光谱扫描观测系统设计.
天文研究与技术,2016,13(2):257-265
|
CSCD被引
4
次
|
|
|
|
|
5.
陈宇超. NVST的长期跟踪误差分析及改正.
天文研究与技术,2016,13(2):205-212
|
CSCD被引
3
次
|
|
|
|
|
6.
Cai Y F. Composingmethod for the two-dimensional scanning spectra observed by the New Vacuum Solar Telescope.
Research in Astronomy and Astrophysics,2018,18(4):61-70
|
CSCD被引
1
次
|
|
|
|
|
了解气象卫星更多信息，请访问