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A two-dimensional multi-band spectroheliograph
Xuan JY(宣家余); Lin J(林隽); XUAN, JY
Source PublicationSOLAR PHYSICS
Contribution Rank第1完成单位
Indexed BySCI
AbstractThe 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.
Subject AreaAstronomy & Astrophysics
WOS IDWOS:A1993KT78300007
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
Citation statistics
Cited Times:16[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorXUAN, JY
AffiliationYunnan Observatory, 650011, Kunming, YN, China
Recommended Citation
GB/T 7714
Xuan JY,Lin J,XUAN, JY. A two-dimensional multi-band spectroheliograph[J]. SOLAR PHYSICS,1993,144(2):307-314.
APA Xuan JY,Lin J,&XUAN, JY.(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.
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