Physics – Optics
Scientific paper
Jun 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004esasp.554..381v&link_type=abstract
In: Proceedings of the 5th International Conference on Space Optics (ICSO 2004), 30 March - 2 April 2004, Toulouse, France. Ed.:
Physics
Optics
Sun, Corona, Coronagraph, External Occultation, Side-Looking
Scientific paper
The SIde-Looking Coronagraph (SILC) is one of the solar remote-sensing instruments proposed for the payload of the Solar Orbiter mission (European Space Agency, ESA). The specificities of the Solar Orbiter mission are very restrictive for a coronagraph: large range of heliocentric distance from 0.21 to 0.6 AU, offset pointing capability of the spacecraft, severe thermal environment of limited mass and volume available. To cope with them, we propose an externally occulted coronagraph entirely protected from direct sunlight by remaining in the shadow of the spacecraft and looking sideways. The optical design follows the general principles of an externally-occulted coronagraph adapted to the side-looking concept. The performances and the expected stray light level will be presented here together with their evolution as function of the heliocentric distance.
Lamy Philippe
Vivès Sébastien
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