Optical design of the Lyman alpha coronagraph for the LYOT microsatellite

Sebastien Vives; Philippe L. Lamy; Jean-Claude Vial

doi:10.1117/12.506390

4 February 2004 Optical design of the Lyman alpha coronagraph for the LYOT microsatellite

Sebastien Vives, Philippe L. Lamy, Jean-Claude Vial

Proceedings Volume 5171, Telescopes and Instrumentation for Solar Astrophysics; (2004) https://doi.org/10.1117/12.506390
Event: Optical Science and Technology, SPIE's 48th Annual Meeting, 2003, San Diego, California, United States

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.

Citation Download Citation

Sebastien Vives, Philippe L. Lamy, and Jean-Claude Vial "Optical design of the Lyman alpha coronagraph for the LYOT microsatellite", Proc. SPIE 5171, Telescopes and Instrumentation for Solar Astrophysics, (4 February 2004); https://doi.org/10.1117/12.506390

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