203 citations · 1.3k across the 37 of their papers we have counts for
5 papers · 2 filters
Closing the loop as an inverse problem: the real-time control of THEMIS adaptive optics
Éric Thiébaut, Michel Tallon, Isabelle Tallon-Bosc +4
We have taken advantage of the implementation of an adaptive optics system on the Themis solar telescope to implement innovative strategies based on an inverse problem formulation…
Beyond FRiM, ASAP: a family of sparse approximation for covariance matrices and preconditioners
Éric Thiébaut, Michel Tallon, Samuel Thé +1
The FRiM fractal operator belongs to a family of operators, called ASAP, defined by an ordered selection of nearest neighbors. This generalization provides means to improve upon th…
PACOME: Optimal multi-epoch combination of direct imaging observations for joint exoplanet detection and orbit estimation
Jules Dallant, Maud Langlois, Olivier Flasseur +1
Exoplanet detections and characterizations via direct imaging require high contrast and high angular resolution. These requirements typically require (i) cutting-edge instrumental…
Characterization of stellar companion from high-contrast long-slit spectroscopy data: The EXtraction Of SPEctrum of COmpanion (EXOSPECO) algorithm
Samuel Thé, Éric Thiébaut, Loïc Denis +4
High-contrast long-slit spectrographs can be used to characterize exoplanets. High-contrast long-slit spectroscopic data are however corrupted by stellar leakages which largely dom…
Inverse problem approach in Extreme Adaptive Optics: analytical model of the fitting error and lowering of the aliasing
Anthony Berdeu, Michel Tallon, Éric Thiébaut +5
We present the results obtained with an end-to-end simulator of an Extreme Adaptive Optics (XAO) system control loop. It is used to predict its on-sky performances and to optimise…