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Proceedings Paper

Optical design of the Lyman alpha coronagraph for the LYOT microsatellite
Author(s): Sebastien Vives; Philippe L. Lamy; Jean-Claude Vial
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Paper Abstract

The LYOT (LYman Orbiting Telescope) solar mission (proposed for a CNES micro-satellite) is composed of a disk imager and a coronagraph, both working at Lyman-α (121.6 nm). The coronagraph is internally occulted and all-reflective with a field-of-view of 1.2 R up to 2.5 R and high spatial resolution (2 pixels) amounts to 5 arcsec. The optical design is driven by the requirement to use a superpolished spherical mirror to minimize the scattered light into the instrument. The LYOT mission will observe the Lyman-α corona at high cadence (1 image/5 minutes) over a period of two years.

Paper Details

Date Published: 4 February 2004
PDF: 9 pages
Proc. SPIE 5171, Telescopes and Instrumentation for Solar Astrophysics, (4 February 2004); doi: 10.1117/12.506390
Show Author Affiliations
Sebastien Vives, Lab. d'Astrophysique de Marseille (France)
Philippe L. Lamy, Lab. d'Astrophysique de Marseille (France)
Jean-Claude Vial, Institut d'Astrophysique Spatiale (France)

Published in SPIE Proceedings Vol. 5171:
Telescopes and Instrumentation for Solar Astrophysics
Silvano Fineschi; Mark A. Gummin, Editor(s)

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