From the 4 of 8 linked papers with an AI index.
8 papers
Closing the loop on-sky with a vector-Zernike wavefront sensor using a convolutional neural network as phase reconstructor
Francisco Oyarzún, Mathieu Motte, Cedric-Taissir Heritier +11
Context: The new giant segmented mirror telescopes will use adaptive optics to reach the fundamental limits in resolving power. To accomplish this, new wavefront sensors (WFS) have…
Impact of microlens shape on the performance of Laser Guide Star wavefront sensors for ELT-class telescopes
Paul Rouquette, Benoit Neichel, Cédric Taisir Heritierc +4
The paper quantifies how imperfections in microlens shapes degrade the centroid accuracy of laser guide star Shack‑Hartmann wavefront sensors on ELT‑class telescopes and evaluates…
Towards an Extended VLTI: Turbulence Characterization for Kilometer-Scale Optical Links at Paranal
B. Neichel, T. Pichon, G. Bourdarot +10
The paper investigates the feasibility of extending the VLTI to kilometer-scale baselines by using free-space optical links with adaptive‑optics pre‑compensation, and proposes a de…
PROVIDENCE: a ground station for space observation
P. -L. Mayeur, J. -F. Sauvage, T. Fusco +25
PROVIDENCE is an ONERA-led project to install a new-generation optical ground station at the Haute-Provence Observatory (OHP) in South of France. Built around a 2.5-meter aperture,…
DD4AO control law for RISTRETTO: robustness, real-time performance, and on-sky validation with PAPYRUS
Isaac Dinis, Muskan Schinde, Nicolas Blind +11
The paper presents the DD4AO frequency‑domain, data‑driven adaptive optics controller, its implementation in the RISTRETTO instrument, and on‑sky validation with the PAPYRUS system…
Estimation of the laser guide star uplink tip-tilt using aperture size diversity
Pierre Jouve, Thierry Fusco, Carlos M. Correia +3
The paper proposes a method to estimate the uplink tip‑tilt of a laser guide star using only telemetry from the launch telescope, by exploiting aperture size diversity and an LMMSE…