Ref: POSTER-2023-0024

Pre-flight calibration of the full sun channel of the Extreme Ultraviolet Imager on board Solar Orbiter

Auchere, F. ; Berghmans, D. ; Rochus, P. ; Harra, L. ; Schmutz, W. ; Schühle, U. ; BenMoussa, A. ; Delmotte, F. ; Dumesnil, C. ; François, S. ; Giordanengo, B. ; Gissot, S. ; Gottwald, A. ; Halain, J.-P. ; Heerlein, K. ; Hermans, A. ; Hervier, V. ; Jérôme, A. ; Mazzoli, A. ; Meltchakov, E. ; Mercier, R. ; Morinaud, G. ; Parenti, S. ; Philippon, A. ; Rebellato, J. ; Roulliay, M. ; Smith, P. J. ; Stegen, K. ; Verbeeck, C. ; Zhang, X.

Poster presented at Solar Orbiter 8 on 2022-09-12

Abstract: P97 FSI, the Full Sun Imager, is an extreme ultraviolet (EUV) solar imager centered simultaneously on the Fe IX/X 17.4 nm and He II 30.4 nm emission lines, part of the Extreme Ultraviolet Imager (EUI) instrument on-board the Solar Orbiter mission planned to be launched in February 2020. The global efficiency of the instrument over the whole EUV wavelength range from 1 to 100 nm must be determined with the extended spectral response of its subsystems: the entrance pupil, the aluminum entrance filter, the Al/Mo/ SiC dual-band multilayer mirror, and the Al/Zr/Al and Al/Mg/Al focal filters. We will discuss the uniformity of the spectral responses as well as the expected image quality and the effects of stray-light and distortion. Filters and mirror references as well as the whole instrument efficiencies have been measured on beamlines over different wavelength ranges at PTB and SOLEIL synchrotrons. We used the available data coupled with the best EUV simulations for each optical component to determine the most reliable spectral response for FSI.

Keyword(s): Solar Orbiter ; EUI
Links: link

The record appears in these collections:
Royal Observatory of Belgium > Solar Physics & Space Weather (SIDC)
Conference Contributions & Seminars > Posters
Solar-Terrestrial Centre of Excellence

 Record created 2023-02-01, last modified 2023-02-01