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Proceedings Paper

Diffraction Limit In Coronagraphs
Author(s): Alan E. DeCew
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Paper Abstract

The unwanted sunlight that enters a coronagraph through the diffraction process is the li iting factor for viewing the solar corona. The techniques initiated by B. Lyotl and expanded by Newkirk and Bohlin2 for coronagraphs with an external occulating assembly are presented. Scientific requirements for even better stray light suppression in the inner corona, and for observation of a broader spectrum now call for more sophisticated optical designs. The approaches for these improved characteristics, the problems they present and the methods to overcome these problems in the coronagraph for the International Solar Polar Mission (ISPM) are discussed.

Paper Details

Date Published: 29 November 1979
PDF: 6 pages
Proc. SPIE 0193, Optical Systems in Engineering I, (29 November 1979); doi: 10.1117/12.957871
Show Author Affiliations
Alan E. DeCew, American Science and Engineering Incorporated (United States)


Published in SPIE Proceedings Vol. 0193:
Optical Systems in Engineering I
Paul R. Yoder, Editor(s)

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