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一米新真空太阳望远镜多波段光谱仪杂散光及空间PSF的测量
Alternative TitleStray-Light and S of pace PSF Measuring of the Multi-Band Spectrometer the lm New Vacuum Solar Telescope
韩笑1,2; 徐稚1; 李正刚1; 金振宇1; 王瑞1,2
Source Publication天文研究与技术(Astronomical Research & Technology)
2017-01
Volume14Issue:1Pages:52-59
DOI10.14005/j.cnki.issn1672-7673.20160615.002
ClassificationTH744.1
Contribution Rank第1完成单位
Indexed ByCSCD
Keyword1m太阳望远镜 多波段光谱仪 杂散光 点扩散函数
Abstract

杂散光由于光学表面散射和地球大气散射引起,降低了光谱图像的空间分辨率。光学系统都存在杂散光,要获得高分辨的光谱图像需要对杂散光进行抑制。多波段光谱仪的杂散光分为两类:(1)光谱桶内由于光机结构引起的杂射光;(2)混在成像光路中并参与色散的杂散光。第1种杂散光可直接测量,约占光谱能量的3%左右。第2种杂散光由于受多种因素影响,所以很难精确测量。从日食光谱测量中测得在观测目标周围对目标产生的杂散光的下限约为10%,并对空间方向的点扩散函数进行测量,为光谱的高分辨重建提供参考。

Other Abstract

Stray-light is caused by the scattering of optical surfaces and the Earth's atmosphere; which degrades the spatial resolution of spectral images. Almost every optical system is affected by stray-light. To obtain high-resolution spectral images, we need to eliminate the effect caused by stray-light as much as possible. The stray-light of muhi-waveband spectrometer can be divided into two categories: (1)stray-light caused by the scattering of the optical and mechanical structures in the spectral barrel and (2)stray-light mixed in the imaging optical path and participating in dispersion. The first category can be measured directly, and it accounts for 3% of spectral energy. It is difficult to measure the second category precisely because it could be affected by many factors. We measured the stray-light around the target from the eclipse spectral observation, and found that the lower limit of the stray-light was about 10%. In addition, we measured the point spread function (PSF) of the multi-band spectrometer in the space direction. This work would provide reference for future high-resolution spectrum reconstruction.

Funding Project国家自然科学基金[11473064]
Funding Organization国家自然科学基金[11473064]
Language中文
Subject Area天文学 ; 太阳与太阳系 ; 太阳与太阳系其他学科
MOST Discipline Catalogue理学 ; 理学::天文学
ISSN1672-7673
CSCD IDCSCD:5905628
Citation statistics
Cited Times:2[CSCD]   [CSCD Record]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/9933
Collection抚仙湖太阳观测站
Affiliation1.中国科学院云南天文台,云南,昆明,650011
2.中国科学院大学,北京,100049
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
韩笑,徐稚,李正刚,等. 一米新真空太阳望远镜多波段光谱仪杂散光及空间PSF的测量[J]. 天文研究与技术(Astronomical Research & Technology),2017,14(1):52-59.
APA 韩笑,徐稚,李正刚,金振宇,&王瑞.(2017).一米新真空太阳望远镜多波段光谱仪杂散光及空间PSF的测量.天文研究与技术(Astronomical Research & Technology),14(1),52-59.
MLA 韩笑,et al."一米新真空太阳望远镜多波段光谱仪杂散光及空间PSF的测量".天文研究与技术(Astronomical Research & Technology) 14.1(2017):52-59.
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