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High Resolution Observations of Umbral Fine Structure

Published online by Cambridge University Press:  12 April 2016

M. Sobotka ,
J A Bonet  and
M Vazquez
M. Sobotka
Affiliation:
Instituto de Astrofísica de Canarias38200 La Laguna, Spain Astronomical Institute, CS-25165, Ondřejov, Czechoslovakia
J A Bonet
Affiliation:
Instituto de Astrofísica de Canarias38200 La Laguna, Spain
M Vazquez
Affiliation:
Instituto de Astrofísica de Canarias38200 La Laguna, Spain

Abstract

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The main results of a photometric and spectroscopic study of umbral fine structures are presented. The observations were obtained at the SVST (La Palma) under conditions of very good seeing.

Type
Session 1. Structure of Active Regions
Information
International Astronomical Union Colloquium , Volume 141: The Magnetic and Velocity Fields of Solar Active Regions , 1993 , pp. 20 - 23
Copyright
Copyright © Astronomical Society of the Pacific 1993

References

Maltby, P.,Avrett, E.H.,Carlsson, M.,Kjeldseth-Moe, O., Kurucz, R.L., and Loeser, R.:1986, Ap. J., 306,284 Google Scholar
Sobotka, M.: 1989, Solar Phys., 124, 37 Google Scholar
Sobotka, M., Bonet, J.A., and Vázquez, M.,: 1992, Astr. Ap., 260, 437 Google Scholar