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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 23, Iss. 3 — Feb. 1, 1984
  • pp: 508–512

Fabry-Perot interferometric observations of the coronal red and green lines during the 1983 Indonesian eclipse

T. Chandrasekhar, N. M. Ashok, J. N. Desai, Jay M. Pasachoff, and K. R. Sivaraman  »View Author Affiliations


Applied Optics, Vol. 23, Issue 3, pp. 508-512 (1984)
http://dx.doi.org/10.1364/AO.23.000508


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Abstract

During the total solar eclipse of 11 June 1983 over Java, Indonesia, a dual-channel Fabry-Perot interferometric system was used to study simultaneously the coronal emission lines at 5303 Å (Fe xiv) and at 6374 Å (Fe x). The two coronal lines were spatially separated by a multilayer interference beam splitter; the beams then entered two separate optically contacted Fabry-Perot systems operating off-axis. The resulting interference fringes were imaged on fine-grain film. Initial results indicate an emission corona confined largely within 1.2 R. Doppler temperatures derived from the width of the 5303-Å line appear to be appreciably lower than similar temperatures determined during the solar-maximum eclipse of 1980.

© 1984 Optical Society of America

History
Original Manuscript: September 27, 1983
Published: February 1, 1984

Citation
T. Chandrasekhar, N. M. Ashok, J. N. Desai, Jay M. Pasachoff, and K. R. Sivaraman, "Fabry-Perot interferometric observations of the coronal red and green lines during the 1983 Indonesian eclipse," Appl. Opt. 23, 508-512 (1984)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-23-3-508

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