58 citations · 247 across the 12 of their papers we have counts for
12 papers
Expected performance of the Pyramid wavefront sensor with a laser guide star for 40 m class telescopes
Francisco Oyarzún, Vincent Chambouleyron, Benoit Neichel +2
The use of artificial Laser Guide Stars (LGS) is planned for the new generation of giant segmented mirror telescopes, to extend the sky coverage of their adaptive optics systems. T…
Towards an automatic system for monitoring of CN2 and wind speed profiles with GeMS
E. Masciadri, B. Neichel, A. Guesalaga +1
Wide Field Adaptive Optics (WFAO) systems represent the more sophisticated AO systems available today at large telescopes. A critical aspect for these WFAO systems in order to deli…
Experience with wavefront sensor and deformable mirror interfaces for wide-field adaptive optics systems
A. G. Basden, D. Atkinson, N. A. Bharmal +56
Recent advances in adaptive optics (AO) have led to the implementation of wide field-of-view AO systems. A number of wide-field AO systems are also planned for the forthcoming Extr…
Validation Through Simulations of a Cn2 Profiler for the ESO/VLT Adaptive Optics Facility
A. Garcia-Rissmann, A. Guesalaga, J. Kolb +3
The Adaptive Optics Facility (AOF) project envisages transforming one of the VLT units into an adaptive telescope and providing its ESO (European Southern Observatory) second gener…
On-sky vibration environment for the Gemini Planet Imager and mitigation effort
Markus Hartung, Tom Hayward, Les Saddlemyer +20
The Gemini Planet Imager (GPI) entered on-sky commissioning and had its first-light at the Gemini South (GS) telescope in November 2013. GPI is an extreme adaptive optics (XAO), hi…
Towards a reliability assessment of the Cn2 and wind speed vertical profiles retrieved from GeMS
Benoit Neichel, Elena Masciadri, Andrés R. Guesalaga +2
The advent of a new generation of Adaptive Optics systems called Wide Field AO (WFAO) mark the beginning of a new era. By using multiple Guide Stars (GSs), either Laser Guide Stars…
Open-loop tomography with artificial neural networks on CANARY: on-sky results
J. Osborn, F. J. De Cos Juez, D. Guzman +11
We present recent results from the initial testing of an Artificial Neural Network (ANN) based tomographic reconstructor Complex Atmospheric Reconstructor based on Machine lEarNing…
Beam shaping for laser-based adaptive optics in astronomy
Clémentine Béchet, Andrés Guesalaga, Benoit Neichel +5
The availability and performance of laser-based adaptive optics (AO) systems are strongly dependent on the power and quality of the laser beam before being projected to the sky. Fr…
Artificial neural networks for centroiding elongated spots in Shack-Hartmann wavefront sensors
A. T. Mello, A. Kanaan, D. Guzman +1
The use of Adaptive Optics in Extremely Large Telescopes brings new challenges, one of which is the treatment of Shack-Hartmann Wavefront sensors images. When using this type of se…
Cn2 and wind profiler method to quantify the frozen flow decay using wide-field laser guide stars adaptive optics
Andrés Guesalaga, Benoit Neichel, Angela Cortes +2
We use spatio-temporal cross-correlations of slopes from five Shack-Hartmann wavefront sensors to analyse the temporal evolution of the atmospheric turbulence layers at different a…
Atmospheric turbulence profiling using multiple laser star wavefront sensors
Angela Cortés, Benoit Neichel, Andrés Guesalaga +3
This paper describes the data preprocessing and reduction methods together with SLODAR analysis and wind profiling techniques for GeMS: the Gemini MCAO System. The wavefront gradie…
Using artificial neural networks for open-loop tomography
James Osborn, Francisco Javier De Cos Juez, Dani Guzman +4
Modern adaptive optics (AO) systems for large telescopes require tomographic techniques to reconstruct the phase aberrations induced by the turbulent atmosphere along a line of sig…