A two-dimensional multi-band spectroheliograph

	A two-dimensional multi-band spectroheliograph
	Xuan JY(宣家余); Lin J(林隽)
刊名	SOLAR PHYSICS
	1993-04
卷号	144 期号:2 页码:307-314
ISSN号	0038-0938
通讯作者	XUAN, JY
产权排序	第一完成单位
英文摘要	The present paper describes a two-dimensional multi-band spectrograph which is located at Yunnan Observatory (25-degrees-N 103-degrees-E), Kunming. The instrument consists of a coelostat system with an aperture of 40 cm, and spatial resolution better than 1'' under excellent seeing, and a spectrograph equipped with a plane reflecting grating. It can simultaneously obtain spectral data in ten bands, including the Balmer lines, metallic lines [Fe I lambda6173 angstrom, D1,2,3, Mg, and Ca II (H + K)] and He II lambda4686 angstrom. We are able to control the observational processes by means of a computer and obtain the following data synchronously or quasi-synchronously: multi-band spectra, Halpha filtergrams, magnetic field, and white light. With the aid of Halpha slit-jaw filtergrams, we can determine where and when the spectral data are obtained and, on the basis of analysing the spectral line profiles, we can understand the physical characteristics of an active region and derive the fields of physical parameters. For the line-of-sight velocities, the values measured are as high as hundreds of kilometers per second and as low as a few kilometers per second.
学科主题	Astronomy & Astrophysics
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
收录类别	SCI
原文出处	http://link.springer.com/article/10.1007%2FBF00627595
语种	英语
WOS记录号	WOS:A1993KT78300007
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/6011]
专题	云南天文台_太阳物理研究组
作者单位	Yunnan Observatory, 650011, Kunming, YN, China
推荐引用方式 GB/T 7714	Xuan JY,Lin J. A two-dimensional multi-band spectroheliograph[J]. SOLAR PHYSICS,1993,144(2):307-314.
APA	Xuan JY,&Lin J.(1993).A two-dimensional multi-band spectroheliograph.SOLAR PHYSICS,144(2),307-314.
MLA	Xuan JY,et al."A two-dimensional multi-band spectroheliograph".SOLAR PHYSICS 144.2(1993):307-314.