Share Email Print

Proceedings Paper

The solar high-resolution imager: coronagraph LYOT mission
Author(s): Jean-Claude Vial; Xueyan Song; Philippe Lemaire; Alan H. Gabriel; Jean-Pierre Delaboudiniere; Karine Bocchialini; Serge L. Koutchmy; Philippe L. Lamy; Raymond Mercier; Marie Francoise Ravet; Frederic Auchere
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

The LYOT (LYman Orbiting Telescope) solar mission is proposed to be implemented on a micro-satellite of CNES (France) under phase A study. It includes two main instruments, which image the solar disk and the low corona up to 2.5 Ro in the H I Lyman-α line at 121.6 nm. The spatial resolution is about 1” for the disk and 2.5” for corona. It also carries an EIT-type telescope in the He II (30.4 nm) line. The coronagraph needs a super polished mirror at the entrance pupil to minimize the light scattering. Gratings and optical filters are used to select the Lyman-α wavelength. VUV cameras with 2048×2048 pixels record solar images up to every 10 seconds. The satellite operates at a high telemetry rate (more then 100 kb/s, after onboard data compression). The envisaged orbits are either geostationary or heliosynchronous. Possible launch dates could be end of 2006 - beginning of 2007.

Paper Details

Date Published: 11 February 2003
PDF: 11 pages
Proc. SPIE 4853, Innovative Telescopes and Instrumentation for Solar Astrophysics, (11 February 2003); doi: 10.1117/12.460291
Show Author Affiliations
Jean-Claude Vial, Institut d'Astrophysique Spatiale (France)
Xueyan Song, Institut d'Astrophysique Spatiale (France)
Philippe Lemaire, Institut d'Astrophysique Spatiale (France)
Alan H. Gabriel, Institut d'Astrophysique Spatiale (France)
Jean-Pierre Delaboudiniere, Institut d'Astrophysique Spatiale (France)
Karine Bocchialini, Institut d'Astrophysique Spatiale (France)
Serge L. Koutchmy, Institut d'Astrophysique de Paris (France)
Philippe L. Lamy, Lab. d'Astronomie Spatiale de Marseille (France)
Raymond Mercier, Institut d'Optique Theorique et Appliquee (France)
Marie Francoise Ravet, Institut d'Optique Theorique et Appliquee (France)
Frederic Auchere, NASA Goddard Space Flight Ctr. (United States)

Published in SPIE Proceedings Vol. 4853:
Innovative Telescopes and Instrumentation for Solar Astrophysics
Stephen L. Keil; Sergey V. Avakyan, Editor(s)

© SPIE. Terms of Use
Back to Top