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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Journal ArticleDOI
On the radio and near-infrared jet of pks 2155-304 and its close environment
Elisabetta Liuzzo,Renato Falomo,Aldo Treves,Carmelo Arcidiacono,E. Torresi,Michela Uslenghi,Jacopo Farinato,Alessia Moretti,Roberto Ragazzoni,Emiliano Diolaiti,Matteo Lombini,R. Brast,Rob Donaldson,Johann Kolb,Enrico Marchetti,Sebastien Tordo +15 more
TL;DR: In this paper, the authors reported on high-resolution (~0''12) direct imaging of the field of PKS 2155-304 using adaptive optics near-IR (NIR) observations in the J and Ks bands obtained with the ESO Multi-Conjugate Adaptive Optics Demonstrator on the Very Large Telescope.
Journal ArticleDOI
Calibrating the interaction matrix for the LINC-NIRVANA high layer wavefront sensor.
Xianyu Zhang,Carmelo Arcidiacono,Al Conrad,Tom Herbst,Wolfgang Gaessler,Thomas Bertram,Roberto Ragazzoni,Laura Schreiber,Emiliano Diolaiti,Martin Kuerster,Peter Bizenberger,Daniel Meschke,Hans-Walter Rix,Changhui Rao,Lars Mohr,Florian Briegel,Frank Kittmann,Juergen Berwein,Jan Trowitzsch +18 more
TL;DR: The push-pull method for calibrating the interaction matrix of the layer-oriented multi-conjugate adaptive optics system is developed and the benefits of this method over the traditional push-only method are quantified.
Proceedings ArticleDOI
The MCAO systems within LINC-NIRVANA: control aspects beyond wavefront correction
Thomas Bertram,Carmelo Arcidiacono,Jürgen Berwein,Peter Bizenberger,Florian Briegel,Emiliano Diolaiti,Jacopo Farinato,Wolfgang Gässler,Tom Herbst,Ralph Hofferbert,Frank Kittmann,Martin Kürster,Roberto Ragazzoni,Laura Schreiber,Jan Trowitzsch,Valentina Viotto +15 more
TL;DR: In this article, a wavefront control scheme for LINC-NIRVANA is presented, in which atmospheric, but also instrumental tip/tilt corrections are sensed with the high layer wavefront sensor and corrected by the adaptive secondary mirror of the LBT.
Proceedings ArticleDOI
Wide-field imaging on 8- to 100-meter class telescopes
G. Gentile,Emiliano Diolaiti,Roberto Ragazzoni,Carmelo Arcidiacono,Andrea Baruffolo,Jacopo Farinato,Italo Foppiani,Matteo Lombini,Emanuele Giallongo,Andrea Di Paola,Fernando Pedichini,Roberto Speziali +11 more
TL;DR: In this article, a Smart FastCamera (SFC) is proposed to provide an equivalent focal ratio as low as F/1, with a size that is identical to the large focal ratio focal planesize.
Proceedings ArticleDOI
AO for ELTs: How much margin for innovation?
TL;DR: Adaptive Optics for Extremely Large Telescopes could need to be forzen, at conceptual level, within a few years as discussed by the authors, which requires to identify the directions of innovation which can have some chance to give improvement by a large factor.