Design, construction and performance of a spectrograph for recording the flash spectrum during solar eclipse

Author

Loon, Chin Wei ; Zainuddin, Mohd Zambri

Author_Institution

Dept. of Phys., Univ. of Malaya, Kuala Lumpur, Malaysia

fYear

2011

fDate

12-13 July 2011

Firstpage

185

Lastpage

189

Abstract

Physical parameters of the solar chromosphere are determined by observing the flash spectrum of a total solar eclipse. Flash spectrum is a phenomenon that is only visible a few second before and after the totality of a solar eclipse. Specific spectrograph design is needed to suit the purpose of the flash spectrum recordings. A spectrograph has been designed and built to capture the flash spectrum during the total solar eclipse of 2009. The design and construction of the spectrograph is described in this paper. Some emission lines from the solar chromosphere were recorded. The observation was less successful due to some technical problems and weaknesses of the spectrograph. This led to the second design of the spectrograph. The improved version spectrograph covered the spectral range from 4750Å to 6750 Å with dispersion of 1.5 Å/pixel. Chromospheric spectrum was recorded during the annular solar eclipse of 2010.

Keywords

astronomical instruments; chromosphere; solar eclipses; solar spectra; spectrometers; annular solar eclipse; chromospheric spectrum; emission lines; flash spectrum recordings; solar chromosphere; spectral range; spectrograph design; total solar eclipse; wavelength 4750 angstrom to 6750 angstrom; Charge coupled devices; Collimators; Dispersion; Gratings; Sun; Telescopes; flash spectrum; solar chromosphere; solar eclipse; spectrograph;

fLanguage

English

Publisher

ieee

Conference_Titel

Space Science and Communication (IconSpace), 2011 IEEE International Conference on

Conference_Location

Penang

Print_ISBN

978-1-4577-0563-2

Electronic_ISBN

978-1-4577-0562-5

Type

conf

DOI

10.1109/IConSpace.2011.6015880

Filename

6015880