SUAVE: a disruptive off-axis SiC far UV lyman-alpha solar telescope for long term observations

Luc Damé; Eleanore Fringhian rupert; Patrick Lacroix; Pierre Gilbert; Nicolas Caignard; Mustapha Meftah; Nicolas Rouanet; Pierre Etcheto; Jacques Berthon

doi:10.1117/12.2688480

12 July 2023 SUAVE: a disruptive off-axis SiC far UV lyman-alpha solar telescope for long term observations

Luc Damé, Eleanore Fringhian rupert, Patrick Lacroix, Pierre Gilbert, Nicolas Caignard, Mustapha Meftah, Nicolas Rouanet, Pierre Etcheto, Jacques Berthon

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Proceedings Volume 12777, International Conference on Space Optics — ICSO 2022; 1277702 (2023) https://doi.org/10.1117/12.2688480
Event: International Conference on Space Optics — ICSO 2022, 2022, Dubrovnik, Croatia

Abstract

SUAVE (Solar Ultraviolet Advanced Variability Experiment) is a far UV imaging solar telescope (Lyman Alpha, 121.6 nm, Herzberg continuum, 200-242 nm, etc.) of novel design for ultimate thermal stability and long lasting performances over several years instead of, often, a few weeks or months in this wavelength range. SUAVE is a 80 mm Ritchey-Chrétien off-axis telescope with "mushroom type" SiC mirrors and no entrance window for long and uncompromising observations in the UV (no coatings of mirrors, flux limited to less than 2 solar constants on filters to avoid their degradation), associated with an ultimate thermal control (no central obscuration resulting in limited thermal gradients and easier heat evacuation, focus control, stabilization). Design and performances will be detailed as well as results of thermal/optical tests performed on the SiC primary mirror and its regulated support plate also in SiC. Plans for the realization of a representative breadboard for testing of both optical and thermal properties are presented. SUAVE is the main instrument of the Solar/Climate microsatellite SoSWEET mission (Solar ultraviolet variability and Space Weather Extreme EvenTs).

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Luc Damé, Eleanore Fringhian rupert, Patrick Lacroix, Pierre Gilbert, Nicolas Caignard, Mustapha Meftah, Nicolas Rouanet, Pierre Etcheto, and Jacques Berthon "SUAVE: a disruptive off-axis SiC far UV lyman-alpha solar telescope for long term observations", Proc. SPIE 12777, International Conference on Space Optics — ICSO 2022, 1277702 (12 July 2023); https://doi.org/10.1117/12.2688480

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