13 citations · 50 across the 17 of their papers we have counts for
9 papers · 1 filter
Prospects of Deep Field Surveys with Global-MCAO on an ELT
Elisa Portaluri, Valentina Viotto, Roberto Ragazzoni +12
Several astronomical surveys aimed at the investigation of the extragalactic components were carried out in order to map systematically the universe and its constituents. An excell…
Data processing on simulated data for SHARK-NIR
E. Carolo, D. Vassallo, J. Farinato +22
A robust post processing technique is mandatory to analyse the coronagraphic high contrast imaging data. Angular Differential Imaging (ADI) and Principal Component Analysis (PCA) a…
A Holographic Diffuser Generalised Optical Differentiation Wavefront Sensor
Luca Marafatto, Roberto Ragazzoni, Daniele Vassallo +12
The wavefront sensors used today at the biggest World's telescopes have either a high dynamic range or a high sensitivity, and they are subject to a linear trade off between these…
Recovering pyramid WS gain in non-common path aberration correction mode via deformable lens
D. Magrin, S. Bonora, M. Quintavalla +5
It is by now well known that pyramid based wavefront sensors, once in closed loop, have the capability to improve more and more the gain as the reference natural star image size is…
A testing facility for AO on-sky demonstrations at the Copernico's Telescope within the ADONI framework
S. Chinellato, R. Ragazzoni, J. Farinato +21
In the context of ADONI - the ADaptive Optics National laboratory of INAF - we are arranging for a facility, accessible to the AO community, in which visiting multi-purpose instrum…
Ingot Laser Guide Stars Wavefront Sensing
Roberto Ragazzoni, Elisa Portaluri, Valentina Viotto +11
We revisit one class of z-invariant WaveFront sensor where the LGS is fired aside of the telescope aperture. In this way there is a spatial dependence on the focal plane with respe…
Hierarchichal-segmented AO in order to attain wide field compensation in the visible on an 8m class telescope
Roberto Ragazzoni, Demetrio Magrin, Jacopo Farinato +10
We describe the preliminary optimized layout for a partially optimized concept of an optical-8m class VLT-like 2x2 segmented camera where each channel is assisted by an equivalent…
Multiple spatial frequencies wavefront sensing
Roberto Ragazzoni, Daniele Vassallo, Marco Dima +10
We describe the concept of splitting spatial frequency perturbations into some kind of pupil planes wavefront sensors. Further to the existing approach of dropping higher spatial f…
SHARK-NIR, the coronagraphic camera for LBT, moving toward construction
Jacopo Farinato, Francesca Bacciotti, Carlo Baffa +37
SHARK-NIR is one of the two coronagraphic instruments proposed for the Large Binocular Telescope. Together with SHARK-VIS (performing coronagraphic imaging in the visible domain),…