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The structure of the lower solar chromosphere in undisturbed and active regions

Published online by Cambridge University Press:  14 August 2015

E. Dubov
E. Dubov*
Affiliation:
Crimean Astrophysical Observatory, Nauchny, Crimea, U.S.S.R.

Abstract

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As observational material in this work we used spectroheliograms taken with the Crimean solar tower telescope in K232 and Hα filtergrams taken with the chromospheric telescope in Simeis. The Hα birefringent filter was so adjusted, that by tuning the last polaroid we could take filtergrams in the centre of Hα or combined filtergrams in the two wings at Hα ± 0·5 Å. So the effect of Doppler shifts on image-brightness distribution was diminished. We compared the brightness distribution with that of spectroheliograms.

Type
Part III: Optical Structure of an Active Region
Information
Symposium - International Astronomical Union , Volume 35: Structure and Development of Solar Active Regions , 1968 , pp. 255 - 258
Copyright
Copyright © Reidel 1968