Physics
Scientific paper
Apr 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993soph..144..307x&link_type=abstract
Solar Physics (ISSN 0038-0938), vol. 144, no. 2, p. 307-314.
Physics
12
Solar Spectrometers, Spectroheliographs, Solar Atmosphere, Solar Spectra, Telescopes
Scientific paper
The present paper describes a 2D multiband spectrograph which is located at Yunnan Observatory (25 deg N 103 deg E), Kunming. The instrument consists of a coelostat system with an aperture of 40 cm, and spatial resolution better than 1 arcsec 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 lambda 6173 A, D (1, 2, 3), Mg, and Ca II (H + K) and He II 3.4686 A. We are able to control the observational processes by means of a computer and obtain the following data synchronously or quasi-synchronously: multiband spectra, H-alpha filtergrams, magnetic field, and white light. With the aid of H-alpha slit-jaw filtergrams, we can determine where and when the spectral data are obtained and, on the basis of analyzing 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.
Lin Juhn-Jong
Xuan Jia-Yu
No associations
LandOfFree
A two-dimensional multi-band spectroheliograph does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with A two-dimensional multi-band spectroheliograph, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A two-dimensional multi-band spectroheliograph will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1309336