R
Roberto Ragazzoni
Researcher at INAF
Publications - 471
Citations - 10303
Roberto Ragazzoni is an academic researcher from INAF. The author has contributed to research in topics: Adaptive optics & Wavefront. The author has an hindex of 35, co-authored 420 publications receiving 8381 citations. Previous affiliations of Roberto Ragazzoni include Max Planck Society & University of Padua.
Papers
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Proceedings ArticleDOI
Kalman-filter-based optimal control law for star-oriented and layer-oriented multiconjugate adaptive optics
Brice Le Roux,Roberto Ragazzoni,Carmelo Arcidiacono,Jean-Marc Conan,Caroline Kulcsár,Henri-François Raynaud +5 more
TL;DR: In this paper, the optimal closed loop control law for multiconjugate adaptive optics (MCAO) is proposed based on a Kalman filter and a feedback control, which allows to take into account the wavefront sensing noise, the turbulence profil model, the Kolmogorov statistics and a temporal model of the turbulence.
Proceedings ArticleDOI
Extending the pyramid WFS to LGSs: the INGOT WFS
Roberto Ragazzoni,Davide Greggio,Valentina Viotto,Simone Di Filippo,Marco Dima,Jacopo Farinato,Maria Bergomi,Elisa Portaluri,Demetrio Magrin,Luca Marafatto,Federico Biondi,Elena Carolo,Simonetta Chinellato,Gabriele Umbriaco,Daniele Vassallo +14 more
TL;DR: A class of a novel kind of WFS that employ a combination of refraction and reflection, such that they can convey the light from an LGS into a limited number of pupils, making the device compact, doable with a single piece of glass, and able to feed a minimum sized format detector.
Proceedings ArticleDOI
Prime focus active optics with the Large Binocular Telescope
John M. Hill,Roberto Ragazzoni,Andrea Baruffolo,Chris Biddick,O. Kuhn,Emiliano Diolaiti,David Thompson,Andrew Rakich +7 more
TL;DR: In this paper, the authors describe the use of active optics with the honeycomb primary mirrors to provide focussing, collimation and low-order active wavefront correction for the two prime focus cameras now operating on the LBT.
Journal ArticleDOI
Signal to noise ratio of layer-oriented measurements for multiconjugate adaptive optics
TL;DR: In this article, the authors compared the performance of optical and numerical layer-oriented MCAO in terms of signal-to-noise ratio (SNR) and showed that optical layer oriented measurements are more efficient in the regime of faint flux and a large number of guide stars.
Proceedings ArticleDOI
The double Prime Focus camera for the Large Binocular Telescope
Roberto Ragazzoni,Roberto Ragazzoni,Emanuele Giallongo,Fabio Pasian,Carmelo Arcidiacono,Andrea Baruffolo,Emiliano Diolaiti,Andrea Di Paola,Fabio Faccin,Jacopo Farinato,Adriano Fontana,F. Gasparo,Fernando Pedichini,Riccardo Smareglia,Roberto Speziali,Elise Vernet +15 more
TL;DR: The Prime Focus for the Large Binocular Telescope (PF-LBT) as discussed by the authors is a two-camera system with four 4kx2k CCDs and a six lenses corrector with an aspheric surface.