28 citations · 100 across the 9 of their papers we have counts for
9 papers
The MICADO first light imager for the ELT: the SCAO module AIT in France, from the beta flat configuration towards the flat and final configurations
Yann Clénet, Vincent Lapeyrère, Eric Gendron +45
MICADO is the designated ELT first light instrument, a near-infrared imager working at the diffraction limit of the telescope thanks to a SCAO and an MCAO mode. Since summer 2024,…
Strategy for sensing petal mode in presence of AO residual turbulence with pyramid wavefront sensor
Nicolas Levraud, Vincent Chambouleyron, Jean François Sauvage +9
With the Extremely Large Telescope-generation telescopes come new challenges. The complexity of these telescopes' pupil creates new problems for Adaptive Optics. In particular, the…
Modeling noise propagation in Fourier-filtering wavefront sensing, fundamental limits and quantitative comparison
Vincent Chambouleyron, Olivier Fauvarque, Cédric Plantet +5
Adaptive optics (AO) is a technique allowing to drastically improve ground-based telescopes angular resolution. The wavefront sensor (WFS) is one of the key components of such syst…
Optimizing Fourier-Filtering WFS to reach sensitivity close to the fundamental limit
Vincent Chambouleyron, Olivier Fauvarque, Cédric Plantet +5
To reach the full potential of the new generation of ground based telescopes, an extremely fine adjustment of the phase is required. Wavefront control and correction before detecti…
Adapting the pyramid wavefront sensor for pupil fragmentation of the ELT class telescopes
Nicolas Levraud, Vincent Chambouleyron, Olivier Fauvarque +8
The next generation of Extremely Large Telescope (24 to 39m diameter) will suffer from the so-called "pupil fragmentation" problem. Due to their pupil shape complexity (segmentatio…
Current status of PAPYRUS : the pyramid based adaptive optics system at LAM/OHP
Muslimov E., Levraud N., Chambouleyron V. +23
The Provence Adaptive optics Pyramid Run System (PAPYRUS) is a pyramid-based Adaptive Optics (AO) system that will be installed at the Coude focus of the 1.52m telescope (T152) at…
Variation on a Zernike wavefront sensor theme: optimal use of photons
Vincent Chambouleyron, Olivier Fauvarque, Jean-François Sauvage +6
The Zernike wavefront sensor (ZWFS) is a concept belonging to the wide class Fourier-filtering wavefront sensor (FFWFS). The ZWFS is known for its extremely high sensitivity while…
Demonstration of an electric field conjugation algorithm for improved starlight rejection through a single mode optical fiber
Jorge Llop Sayson, Garreth Ruane, Dimitri Mawet +8
Linking a coronagraph instrument to a spectrograph via a single mode optical fiber is a pathway towards detailed characterization of exoplanet atmospheres with current and future g…
Vortex fiber nulling for exoplanet observations. I. Experimental demonstration in monochromatic light
Daniel Echeverri, Garreth Ruane, Nemanja Jovanovic +2
Vortex fiber nulling is a method for spectroscopically characterizing exoplanets at small angular separations, , from their host star. The starlight is suppressed by c…