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Temporal Observations of the λ5303 Emission Line Profile During the 74 Minute Totality from the Concorde SST at the 30 June 1973 Total Solar Eclipse: Preliminary Intensity Variations Above an Active Region*

Published online by Cambridge University Press:  25 May 2016

D. H. Liebenberg  and
M. M. Hoffman
D. H. Liebenberg
Affiliation:
University of California, Los Alamos Scientific Laboratory, Los Alamos, N.M., U.S.A.
M. M. Hoffman
Affiliation:
University of California, Los Alamos Scientific Laboratory, Los Alamos, N.M., U.S.A.

Abstract

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(Nature). Apparatus was flown aboard the French-British Concorde SST to obtain high resolution emission line intensity profiles during the 30 June 1973 total solar eclipse. A prime objective was to obtain profiles that could be used to determine the presence in the Fe xiv coronal emission line, 530.3 nm, of the 300 s periodicity such as is observed in the photosphere and chromosphere. The long totality duration of 74 min on the French Concorde 001 provided a unique opportunity for this study. At the 55000 ft cruise altitude weather influences are negligible, scattered light background reduced and seeing conditions excellent. The instrumentation included a high resolution pressure scanned Fabry-Perot interferometer and high resolution recordind. This instrumentation was perfected in earlier Los Alamos Scientific Laboratory solar eclipse flights since 1965 (Liebenberg, 1965, 1967; Hoffman et al., 1970). A 12 cm aperture window and 7.7 cm aperture f/13 telescope were designed to optimize the use of the available space as shown in Figure 1.

Type
Part V Reports on Special Observations
Information
Symposium - International Astronomical Union , Volume 57: Coronal Disturbances , 1974 , pp. 485 - 487
Copyright
Copyright © Reidel 1974 

References

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