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- W4285585999 abstract "Metis is the coronagraph on board the Solar Orbiter ESA/NASA mission, it is designed to study the solar corona by providing an artificial solar eclipse. Metis features two channels: the ultraviolet H I (121.6 nm) and the visible light (580-640 nm). This work is focalised on the latter. Radiometric performances have been tested on-ground using a flatfield panel (uniform illumination), and the in-flight stability can be verified through the light reflected from the instrument door. When the Sun light impacts on the spacecraft shield, a fraction is reflected in the direction of the door, which then partly reflects it inside Metis. The analysis of the door images confirms its integrity and that of its subsequent optical components, since the reflected intensity follows as expected a 1/r<sup>2</sup> law, r being the Sun-spacecraft distance. Further analysis is being performed on such images to verify the operating status of various elements of Metis. Complementary ray-tracing simulation studies on the door retro-reflectivity properties are also in progress." @default.
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- W4285585999 date "2022-08-27" @default.
- W4285585999 modified "2023-10-08" @default.
- W4285585999 title "In-flight Metis radiometric performance verification using the light retro-reflected from its door" @default.
- W4285585999 doi "https://doi.org/10.1117/12.2631515" @default.
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