Diffraction Limit In Coronagraphs

Alan E. DeCew Jr.

doi:10.1117/12.957871

29 November 1979 Diffraction Limit In Coronagraphs

Alan E. DeCew Jr.

Proceedings Volume 0193, Optical Systems in Engineering I; (1979) https://doi.org/10.1117/12.957871
Event: 23rd Annual Technical Symposium, 1979, San Diego, United States

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.

Citation Download Citation

Alan E. DeCew Jr. "Diffraction Limit In Coronagraphs", Proc. SPIE 0193, Optical Systems in Engineering I, (29 November 1979); https://doi.org/10.1117/12.957871

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