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Proceedings Paper

A Solar Lyman Alpha Coronagraph
Author(s): Jacques M Beckers; Harold V Argo
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Paper Abstract

We describe an all reflecting externally and internally occulting solar coronagraph which can be used for observations of the sun in the hydrogen Lyman a line. In the particular design considered and tested, a multiple occulting disk assembly is integrated with a Gregorian telescope in such a way that (i) scattered and diffracted light is minimized, and (ii) a large effective collecting area (16 cm2) as compared to the total telescope length (95 cm) is obtained. The telescope is suncentered pointed and has a large field of view (2.3 degrees diameter). Its image can be used to feed a multiple slit spectrograph, a camera using a Lyman a interference filter or other instrumentation which can make use of the availability of a full coronal image.

Paper Details

Date Published: 9 January 1984
PDF: 6 pages
Proc. SPIE 0445, Instrumentation in Astronomy V, (9 January 1984); doi: 10.1117/12.966162
Show Author Affiliations
Jacques M Beckers, Multiple Mirror Telescope Observatory (United States)
Harold V Argo, Los Alamos National Laboratory (United States)

Published in SPIE Proceedings Vol. 0445:
Instrumentation in Astronomy V
Alec Boksenberg; David L. Crawford, Editor(s)

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