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Author

M. Le Louarn

2 papers indexed here

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Aug 2026

Diagnosing spatial-coherence outer scale, seeing, and dome-induced turbulence from simultaneous multi-wavelength imaging of point-like sources

Atmospheric turbulence causes refractive-index fluctuations that distort the wavefront of light from astronomi cal sources. As starlight propagates through multiple turbulent layers, the cumulative effect sets the achievable image quality (IQ) of observations obtained with ground-based telescopes. Global parameters suc...

B. García-Lorenzo, J. Castro-Almazán, D. Esparza-Arredondo et al. · 1 citation
Review Open access Aug 2026

SAXO+, the second-stage adaptive optics for SPHERE: a review of six selected control algorithms and the results achieved to date

SAXO+ is the second-stage adaptive optics (AO) system that will be added in cascade after SPHERE’s current extreme AO system at the VLT. This upgrade of SPHERE aims to improve coronagraphic contrast by a factor of 10 or more, close to the star, and to extend the performance to fainter, redder targets. To achieve these...

M. Tallon, C. B'echet, I. Dinis et al. · 5 citations

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