Observation and preliminary analysis of the chromospheric flash spectrum obtained during the total solar eclipse of 1980 February 16

Details Observation and preliminary analysis of the chromospheric flash spectrum obtained during the total solar eclipse of 1980 February 16 Observation and preliminary analysis of the chromospheric flash spectrum obtained during the total solar eclipse of 1980 February 16

Dec 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981cha%26a...5..388s&link_type=abstract

Chinese Astronomy and Astrophysics, Volume 5, Issue 4, p. 388-405.

Astronomy and Astrophysics

Astrophysics

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Scientific paper

A successful observation of the flash spectum was made using a slitless spectrograph in Rui-Li country, Yun-Nan province during the total solar eclipse of Feb. 16, 1980. The spectrograph fed by a coelostat has an average dispersion of 5.7 Å/mm. The spectrograms have a height resolution of 185 km.
A preliminary analysis of the observation has been made as follows. We have identified 1042 chromospheric lines ranging from 4799 Å to 5845 Å, 72 of which are not listed in /1/ or /2/. The location of the chromospheric base has been determined. The absolute photometric calibration was made by the spectra of the limb obtained by the slitless spectrograph before the second contact and the spectra of the disk center on the previous day. We have measured and calculated the Intensity of each spectral line near the base of the chromosphere. In addition to the chromospheric lines, we also obtained three coronal lines, 5300 Å (Fe XIV), 5445 Å and 5694 Å (Ca XV).

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