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Applied Optics

Applied Optics


  • Vol. 9, Iss. 12 — Dec. 1, 1970
  • pp: 2631–2634

Color of the K Corona

D. E. Billings  »View Author Affiliations

Applied Optics, Vol. 9, Issue 12, pp. 2631-2634 (1970)

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Observations at the 7 March 1970 eclipse were carried out for the purpose of measuring an expected difference in color between the radially and tangentially polarized components of the corona. The basic instrument was an array of Wollaston prisms and filters in association with a telescope and camera. Excellent photographs were obtained and are now being analyzed. It is expected that the color difference can be used in determination of the three-dimensional configuration of coronal features.

© 1970 Optical Society of America

Original Manuscript: May 25, 1970
Published: December 1, 1970

D. E. Billings, "Color of the K Corona," Appl. Opt. 9, 2631-2634 (1970)

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  1. D. E. Billings, A Guide to the Solar Corona (Academic, New York, 1966), p. 152/There is an error on p. 151 of this reference. Equation (25) should read: (25)Ir=I0Neπσ(16-10u)/24.This changes Eqs. (26), (27), and (29). It requires that the last sentence of the paragraph following Eq. (27) read: “This is the same as the value found from Eq. (26) for u = 0.” Finally, in the first sentence in the paragraph following Eq. (29) we should have: ρr = 1.21ρ0.
  2. See Ref. 1, p. 150.
  3. C. W. Allen, Astrophysical Quantities (Athlone Press, London, 1963), p. 171.
  4. M. Minnaert, Z. Astrophys. 1, 209 (1930).

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