Dr. Florian Ferreira Profile

Dr. Florian Ferreira

Research engineer at LESIA

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Author

Publications (20)

Proceedings Article | 30 August 2022 Presentation + Paper

The MICADO first light imager for the ELT: final design and prototype of the MICADO SCAO RTC

Arnaud Sevin, Florian Ferreira, Eric Gendron, Fabrice Vidal, Damien Gratadour, Yann Clénet, Richard Davies

Proceedings Volume 12185, 121851D (2022) https://doi.org/10.1117/12.2627224

KEYWORDS: Real-time computing, Adaptive optics, Prototyping, Control systems

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Proceedings Article | 30 August 2022 Poster + Paper

The MICADO first light imager for the ELT: overview of the SCAO module at its final design

Yann Clénet, Tristan Buey, Eric Gendron, Sonia Karkar, Fabrice Vidal, Mathieu Cohen, Frédéric Chapron, Arnaud Sevin, Simone Thijs, Sylvestre Taburet, Bruno Borgo, Jean-Michel Huet, Alexandre Blin, Olivier Dupuis, Julien Gaudemard, Florian Ferreira, Jordan Raffard, Fanny Chemla, Vincent Lapeyrère, Vincent Deo, Arielle Bertrou-Cantou, Nicolas Galland, Sylvain Guieu, Eric Meyer, Nicolas Gautherot, Emmanuel Tisserand, Hervé Locatelli, François Meyer, Amal Zidi, Caroline Kulcsár, Henri-François Raynaud, Benoit Sassolas, Laurent Pinard, Christophe Michel, Damien Gratadour, Bertrand Le Ruyet, Roderick Dembet, Manuel Ortiz, Claude Collin, Vartan Arslanyan, Bosko Doncic, Lahoucine Ghouchou, Issan Ibn Taïeb, Pierre Baudoz, Elsa Huby, Gérard Rousset, Sebastian Rabien, Veronika Hörmann, Eckhard Sturm, Richard Davies

Proceedings Volume 12185, 121854S (2022) https://doi.org/10.1117/12.2629856

KEYWORDS: Prototyping, Adaptive optics, Calibration, Real-time computing

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Proceedings Article | 30 August 2022 Poster + Paper

SAXO+ upgrade: system choices and numerical simulations

Fabrice Vidal, Charles Goulas, Raphaël Galicher, Anthony Boccaletti, Faustine Cantalloube, Éric Gendron, Arnaud Sevin, Florian Ferreira, Gaël Chauvin, Maud Langlois, Julien Milli

Proceedings Volume 12185, 121854D (2022) https://doi.org/10.1117/12.2629325

KEYWORDS: Adaptive optics, Device simulation, Real-time computing, Wavefront sensors, Optical spheres, Turbulence, Stars, Point spread functions, Computer simulations, Numerical simulations

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Proceedings Article | 30 August 2022 Poster + Paper

The MICADO first light imager for the ELT: FDR numerical simulations for the SCAO mode

Fabrice Vidal, Nicolas Galland, Arielle Bertrou-Cantou, Eric Gendron, Vincent Deo, Amal Zidi, Florian Ferreira, Arnaud Sevin, Caroline Kulcsár, Henri-François Raynaud, Yann Clénet, Richard Davies

Proceedings Volume 12185, 121855O (2022) https://doi.org/10.1117/12.2629308

KEYWORDS: Actuators, Adaptive optics, Turbulence, Sensors, Modulation, Device simulation, K band, Reflectivity, Image segmentation, Computer simulations

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Proceedings Article | 29 August 2022 Presentation + Paper

Upgrading the high contrast imaging facility SPHERE: science drivers and instrument choices

A. Boccaletti, G. Chauvin, F. Wildi, J. Milli, E. Stadler, E. Diolaiti, R. Gratton, F. Vidal, M. Loupias, M. Langlois, F. Cantalloube, M. N’Diaye, D. Gratadour, F. Ferreira, M. Tallon, J. Mazoyer, D. Segransan, D. Mouillet, J.-L. Beuzit, M. Bonnefoy, R. Galicher, A. Vigan, I. Snellen, M. Feldt, S. Desidera, S. Rousseau, A. Baruffolo, C. Goulas, P. Baudoz, C. Bechet, M. Benisty, A. Bianco, B. Carry, E. Cascone, B. Charnay, E. Choquet, V. Christiaens, F. Cortecchia, V. Di Capprio, A. De Rosa, C. Desgrange, V. D'Orazi, S. Douté, M. Frangiamore, E. Gendron, C. Ginski, E. Huby, C. Keller, C. Kulcsár, R. Landman, S. Lagarde, E. Lagadec, A.-M. Lagrange, M. Lombini, M. Kasper, F. Ménard, Y. Magnard, G. Malaguti, D. Maurel, D. Mesa, G. Morgante, E. Pantin, T. Pichon, A. Potier, P. Rabou, S. Rochat, l. Terenzi, E. Thiébaut, I. Tallon-Bosc, H.-F Raynaud, D. Rouan, A. Sevin, F. Schiavone, L. Schrieber, A. Zanutta

Proceedings Volume 12184, 121841S (2022) https://doi.org/10.1117/12.2630154

KEYWORDS: Optical spheres, Planets, Exoplanets, Astronomy, Astrophysics, Spectral resolution, Adaptive optics, Stars, Wavefront sensors, Coronagraphy

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Proceedings Article | 29 August 2022 Presentation

MAVIS RTC: a forward looking implementation of the COSMIC platform

Damien Gratadour, Julien Bernard, Nicolas Doucet, Florian Ferreira, Arnaud Sevin, Jesse Cranney, Hao Zhang, François Rigaut

Proceedings Volume 12185, 121850T (2022) https://doi.org/10.1117/12.2629956

KEYWORDS: Real-time computing, Turbulence, Tomography, Software development, Performance modeling, Numerical simulations, Model-based design, Data storage, Data acquisition, Artificial intelligence

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Proceedings Article | 29 October 2021 Presentation + Paper

High contrast imaging wavefront sensor referencing from coronagraphic images

Nour Skaf, Olivier Guyon, Anthony Boccaletti, Vincent Deo, Julien Lozi, Sebastien Vievard, Thayne Currie, Barnaby Norris, Kyohoon Ahn, Eric Gendron, Fabrice Vidal, Florian Ferreira, Arnaud Sevin, Arielle Bertrou-Cantou

Proceedings Volume 11823, 1182319 (2021) https://doi.org/10.1117/12.2595008

KEYWORDS: Coronagraphy, Adaptive optics, Point spread functions, Wavefronts, Cameras, Image quality, Telescopes, Wavefront sensors, Imaging systems, Computer simulations

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Proceedings Article | 13 December 2020 Poster + Paper

Adaptive optics real-time control with the compute and control for adaptive optics (Cacao) software framework

Olivier Guyon, Arnaud Sevin, Florian Ferreira, Hatem Ltaief, Jared Males, Vincent Deo, Damien Gratadour, Sylvain Cetre, Frantz Martinache, Julien Lozi, Sebastien Vievard, Neelay Fruitwala, Steven Bos, Nour Skaf

Proceedings Volume 11448, 114482N (2020) https://doi.org/10.1117/12.2562822

KEYWORDS: Adaptive optics, Adaptive control, Software frameworks, Sensors, Sensor fusion, Algorithm development, Open source software, Computing systems, Heart, Computer simulations

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Proceedings Article | 13 December 2020 Poster + Paper

Implementation and initial test results of the new Keck real time controller

Roberto Biasi, C. Patauner, D. Pescoller, C. Mair, M. Andrighettoni, Andrew Jameson, Will Gauvin, Karl Glazebrook, Damien Gratadour, François Rigaut, Julien Tom Bernard, Florian Ferreira, Arnaud Sevin, Jason Chin, Sylvain Cetre, Peter Wizinowich

Proceedings Volume 11448, 114482O (2020) https://doi.org/10.1117/12.2562937

KEYWORDS: Wavefronts, Real-time computing, Mirrors, Interfaces, Keck Observatory, Adaptive optics, Control systems, Tomography, Imaging systems, Cameras

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Proceedings Article | 13 December 2020 Presentation + Paper

Petalometry for the ELT: dealing with the wavefront discontinuities induced by the telescope spider

A. Bertrou-Cantou, E. Gendron, G. Rousset, F. Ferreira, A. Sevin, F. Vidal, Y. Clénet, T. Buey, S. Karkar

Proceedings Volume 11448, 1144812 (2020) https://doi.org/10.1117/12.2562091

KEYWORDS: Sensors, Telescopes, Large telescopes, Thermal effects, Mirrors, Atmospheric turbulence, Deformable mirrors, Optical instrument design, Adaptive optics, Turbulence

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Proceedings Article | 13 December 2020 Presentation + Paper

Hard real-time core software of the AO RTC COSMIC platform: architecture and performance

F. Ferreira, A. Sevin, J. Bernard, O. Guyon, A. Bertrou-Cantou, J. Raffard, F. Vidal, E. Gendron, D. Gratadour

Proceedings Volume 11448, 1144815 (2020) https://doi.org/10.1117/12.2561244

KEYWORDS: Real-time computing, Adaptive optics, Computer architecture, Telescopes, Interfaces, Structural health monitoring, Computing systems, Deformable mirrors, Large telescopes, Actuators

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With the upcoming giant class of telescopes, Adaptive Optics (AO) has become more essential than ever before to get access to the full potential offered by those telescopes. The complexity of such AO systems is reaching extreme heights, and disruptive developments will have to be made in order to build them. One of the critical component of a AO system is the Real Time Controller (RTC) which will have to compute the slopes and the Deformable Mirror (DM) commands at high frequency, in a range of 0.5 to several kHz. Since the complexity of the computations involved in the RTC is increasing with the size of the telescope, fulfilling RTC requirements for Extremely Large Telescope (ELT) class is a challenge. As an example, the MICADO SCAO (Single Conjugate Adaptive Optics) system requires around 1 TMAC/s for the RTC to get sufficient performance. This complexity brings the need for High Performance Computing (HPC) techniques and standards, such as the use of hardware accelerator like GPU. On top of that, building a RTC is often project-dependent as the components and the interfaces change from one instrument to an other. The COSMIC platforms aims at developing a common AO RTC platform which is meant to be powerful, modular and available to the AO community. This development is a joint effort between Observatoire de Paris and the Australian National University (ANU) in collaboration with the Subaru Telescope. We focus here on the current status of the core hard real-time component of this platform. The H-RTC pipeline is composed of Business Units (BU): each BU is an independent process in charge of one particular operation, such as Matrix Vector Multiply (MVM) or centroid computation, that can be made on CPU or on GPU. BUs read and write data on Shared Memory (SHM) handled by the CACAO framework. Synchronization between each BU can then be made either by using semaphore or by busy waiting on the GPU to ensure very low jitter. The RTC pipeline can then be controlled through a Python interface. One of the key point of this architecture is that the interfaces of a BU with the various SHM is abstracted, so adding a new BU in the collection of available ones is straight forward. This approach allows a high performance, scalable, modular and configurable RTC pipeline that could fit the needs of any AO system configuration. Performance has been measured on a MICADO SCAO scale RTC pipeline with around 25,000 slopes by 5,000 actuators on a DGX-1 system equipped with 8 Tesla V100 GPUs. The considered pipeline is composed of two BUs : the first one takes an input the raw pyramid WFS image (produced by simulator), applies on it dark and flat references, and then extract the useful pixel from the image. The second BU performs the MVM and the integration of the commands following a classical integrator command law. Synchronization between the BU is made through GPU busy waiting on the BU inputs. Performance obtained shows a mean latency up to 235 μs using 4 GPUs, with a jitter of 4.4 μs rms and a maximum jitter of 30 μs

Proceedings Article | 13 December 2020 Poster + Paper

MAVIS real-time control system: a high-end implementation of the COSMIC platform

D. Gratadour, J. Bernard, N. Doucet, F. Ferreira, A. Sevin, R. Biasi, F. Rigaut

Proceedings Volume 11448, 114482M (2020) https://doi.org/10.1117/12.2562082

KEYWORDS: Real-time computing, Control systems, Data acquisition, Control systems design, Telecommunications, Field programmable gate arrays, Software development, Data communications, Turbulence, Tomography

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Proceedings Article | 18 July 2018 Paper

Real-time end-to-end AO simulations at ELT scale on multiple GPUs with the COMPASS platform

F. Ferreira, D. Gratadour, A. Sevin, N. Doucet, F. Vidal, V. Deo, E. Gendron

Proceedings Volume 10703, 1070347 (2018) https://doi.org/10.1117/12.2312593

KEYWORDS: Computer simulations, Adaptive optics, Monte Carlo methods, Point spread functions, Image resolution, Device simulation, Telescopes, Wavefront sensors, Turbulence, Wavefronts

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Proceedings Article | 11 July 2018 Paper

Modeling of PSF corrected by adaptive optics systems

F. Ferreira, E. Gendron, G. Rousset, D. Gratadour

Proceedings Volume 10703, 107034A (2018) https://doi.org/10.1117/12.2311806

KEYWORDS: Point spread functions, Adaptive optics, Error analysis, Matrices, Reconstruction algorithms, Wavefronts, Data modeling, Systems modeling, Telescopes, Actuators

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Proceedings Article | 10 July 2018 Presentation + Paper

Prototyping AO RTC using emerging high performance computing technologies with the Green Flash project

Damien Gratadour, Tim Morris, Roberto Biasi, Hugues Deneux, Julien Bernard, Jean-Tristan Buey, Nicolas Doucet, Florian Ferreira, Maxime Laine, Denis Perret, Arnaud Sevin, Alastair Basden, Deli Geng, James Osborn, Lazar Staykov, Matthew Townson, Edward Younger, Mario Andrighettoni, Christian Patauner, Dietrich Pescoller, Jerome Lemaitre, Paolo Palazzari, Damien Pretet, Christophe Rouaud

Proceedings Volume 10703, 1070318 (2018) https://doi.org/10.1117/12.2312686

KEYWORDS: Field programmable gate arrays, Adaptive optics, Prototyping, Real-time computing, Cameras, Computer simulations, Computing systems, Sensors, Interfaces, Data storage

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Proceedings Article | 10 July 2018 Paper

The MICADO first-light imager for the ELT: towards the preliminary design review of the MICADO-MAORY SCAO

Yann Clénet, Tristan Buey, Eric Gendron, Zoltan Hubert, Fabrice Vidal, Mathieu Cohen, Frédéric Chapron, Arnaud Sevin, Pierre Fédou, Gaële Barbary, Pierre Baudoz, Bruno Borgo, Saber Ben Nejma, Vincent Chambouleyron, Vincent Déo, Olivier Dupuis, Sébastien Durand, Florian Ferreira, Julien Gaudemard, Damien Gratadour, Elsa Huby, Jean-Michel Huet, Bertrand Le Ruyet, Napoléon Nguyen-Tuong, Clément Perrot, Simone Thijs, Youssef Younès, Gérard Rousset, Philippe Feautrier, Gérard Zins, Emiliano Diolaiti, Paolo Ciliegi, Simone Esposito, Lorenzo Busoni, Josef Schubert, Michael Hartl, Veronika Hörmann, Richard Davies

Proceedings Volume 10703, 1070313 (2018) https://doi.org/10.1117/12.2311481

KEYWORDS: Mirrors, Telescopes, Relays, Imaging systems, Monochromatic aberrations

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Proceedings Article | 27 July 2016 Paper

COMPASS: status update and long term development plan

D. Gratadour, F. Ferreira, A. Sevin, N. Doucet, Y. Clénet, E. Gendron, M. Lainé, F. Vidal, J. Brulé, M. Puech, C. Vérinaud, A. Carlotti

Proceedings Volume 9909, 990971 (2016) https://doi.org/10.1117/12.2232681

KEYWORDS: Adaptive optics, Computer simulations, Computer architecture, Telescopes, Device simulation, Adaptive optics, Computer simulations, Atmospheric modeling, Actuators, Human-machine interfaces, Wavefront sensors, Control systems

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Proceedings Article | 27 July 2016 Paper

Green FLASH: energy efficient real-time control for AO

D. Gratadour, N. Dipper, R. Biasi, H. Deneux, J. Bernard, J. Brule, R. Dembet, N. Doucet, F. Ferreira, E. Gendron, M. Laine, D. Perret, G. Rousset, A. Sevin, U. Bitenc, D. Geng, E. Younger, M. Andrighettoni, G. Angerer, C. Patauner, D. Pescoller, F. Porta, G. Dufourcq, A. Flaischer, J.-B. Leclere, A. Nai, P. Palazzari, D. Pretet, C. Rouaud

Proceedings Volume 9909, 99094I (2016) https://doi.org/10.1117/12.2232642

KEYWORDS: Adaptive optics, Control systems, Real-time computing, Computing systems, Field programmable gate arrays, Prototyping, Sensors, Telecommunications, Telescopes, Tomography

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Proceedings Article | 27 July 2016 Paper

Deriving comprehensive error breakdown for wide field adaptive optics systems using end-to-end simulations

F. Ferreira, E. Gendron, G. Rousset, D. Gratadour

Proceedings Volume 9909, 990979 (2016) https://doi.org/10.1117/12.2231573

KEYWORDS: Adaptive optics, Computer simulations, Error analysis, Point spread functions, Device simulation, Wavefront sensors, Wavefronts, Deformable mirrors, Stars, Bismuth

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Proceedings Article | 26 July 2016 Paper

Joint MICADO-MAORY SCAO mode: specifications, prototyping, simulations and preliminary design

Yann Clénet, Tristan Buey, Gérard Rousset, Eric Gendron, Simone Esposito, Zoltan Hubert, Lorenzo Busoni, Mathieu Cohen, Armando Riccardi, Frédéric Chapron, Marco Bonaglia, Arnaud Sevin, Pierre Baudoz, Philippe Feautrier, Gérard Zins, Damien Gratadour, Fabrice Vidal, Fanny Chemla, Florian Ferreira, Nicolas Doucet, Sébastien Durand, Alexis Carlotti, Clément Perrot, Laura Schreiber, Matteo Lombini, Paolo Ciliegi, Emiliano Diolaiti, Josef Schubert, Richard Davies

Proceedings Volume 9909, 99090A (2016) https://doi.org/10.1117/12.2231192

KEYWORDS: Prototyping, Real-time computing, Adaptive optics, Imaging systems, Calibration, Modulation, Electroluminescent displays, Telescopes, Coronagraphy, Deformable mirrors

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Showing 5 of 20 publications

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