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Proceedings Paper

New technology mirror coronagraph with extended applications
Author(s): Raymond N. Smartt; Serge L. Koutchmy; Stephen A. Colley; R. Caron; Rainer Schwenn; Sergio R. Restaino
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Paper Abstract

General design considerations of objective-mirror coronagraphs are presented. A 1-m-focal-length prototype reflecting coronagraph based on a 5.5-cm aperture spherical superpolished silicon mirror objective is described. The design is simple off-axis reflection from the objective to a conventional coronagraph optical system (occulting disk, field lens, Lyot stop, and imaging system). This instrument has produced the first images of the emission corona using a ground-based reflecting coronagraph. A second prototype instrument based on a 15-cm aperture superpolished fused-silica mirror is also described.

Paper Details

Date Published: 1 July 1990
PDF: 9 pages
Proc. SPIE 1236, Advanced Technology Optical Telescopes IV, (1 July 1990); doi: 10.1117/12.19200
Show Author Affiliations
Raymond N. Smartt, National Solar Observatory/Sacramento Peak (United States)
Serge L. Koutchmy, Institut d'Astrophysique de Paris/CNRS (France)
Stephen A. Colley, National Solar Observatory/Sacramento Peak (United States)
R. Caron, Institut d'Astrophysique de Paris/CNRS (France)
Rainer Schwenn, Max-Planck-Institut fuer Aeronomie (Germany)
Sergio R. Restaino, New Jersey Institute of Technology (United States)

Published in SPIE Proceedings Vol. 1236:
Advanced Technology Optical Telescopes IV
Lawrence D. Barr, Editor(s)

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