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Analog Video Magnetograms in Real Time

Published online by Cambridge University Press:  14 August 2015

R. C. Smithson and
R. B. Leighton
R. C. Smithson
Affiliation:
California Institute of Technology, Pasadena, Calif., U.S.A.
R. B. Leighton
Affiliation:
California Institute of Technology, Pasadena, Calif., U.S.A.

Extract

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For many years solar magnetic fields have been measured by a variety of techniques, all of which exploit the Zeeman splitting of lines in the solar spectrum. One of these techniques (Leighton, 1959) involves a photographic subtraction of two monochromatic images to produce a picture of the Sun in which the line-of-sight component of the solar magnetic field appears as various shades of gray. In a magnetogram made by this method, zero field strength appears as neutral gray, while magnetic fields of one polarity or the other appear as lighter or darker areas, respectively. Figure 1 shows such a magnetogram.

Information

Type
Part I: Instrumentation – Measurement Fields in the Solar Atmosphere
Information
Symposium - International Astronomical Union , Volume 43: Solar Magnetic Fields , 1971, pp. 76 - 83
Copyright
Copyright © Reidel 1971 

References

Leighton, R. B.: 1957, Astrophys. J. 130, 366.CrossRefGoogle Scholar
Roberts, P. H.: 1970, Ph.D. Thesis, California Institute of Technology (unpublished).Google Scholar