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The White-Light, Far-Red (600-700 nm) and Emission Coronae at the July 11, 1991 Eclipse

Published online by Cambridge University Press:  03 August 2017

V. Rušin ,
M. Rybanský ,
M Minarovjech  and
T. Pintér
V. Rušin
Affiliation:
Astronomical Institute, Slovak Academy of Sciences, 059 60 Tatranská Lomnica, Czecho-Slovakia
M. Rybanský
Affiliation:
Astronomical Institute, Slovak Academy of Sciences, 059 60 Tatranská Lomnica, Czecho-Slovakia
M Minarovjech
Affiliation:
Astronomical Institute, Slovak Academy of Sciences, 059 60 Tatranská Lomnica, Czecho-Slovakia
T. Pintér
Affiliation:
The Slovak Centre of Amateur Astronomy, 947 01 Hurbanovo, Czecho-Slovakia

Abstract

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Preliminary results of the analysis of the white-light, emission (green and red), and far red (600-700 nm) corona during the July 11, 1991 eclipse are given. Even though the corona is of nearly-maximum type, four different principal coronal structures are seen, combined with faint, small-scale structures (loops, arches, cavities, voids or plasmoids). Scattered light is seen up to 10 R⊙ in helmet streamers. The Ludendorff index of the corona shape turns out to be a + b = −0.02, and the estimated brightness of JK = 1.47 × 10–6B⊙. Some aspects of multiwavelength observations are discussed.

Keywords

eclipsesSun: corona
Type
Part 2: Infrared Observations of the 1991 Total Solar Eclipse
Information
Symposium - International Astronomical Union , Volume 154: Infrared Solar Physics , 1994 , pp. 211 - 215
Copyright
Copyright © Kluwer 1994 

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