42 citations · 123 across the 40 of their papers we have counts for
11 papers · 2 filters
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…
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…
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…
A virtual coronagraphic test bench for SHARK-NIR, the second-generation high contrast imager for the Large Binocular Telescope
D. Vassallo, E. Carolo, J. Farinato +21
In this article, we present a simulator conceived for the conceptual study of an AO-fed high-contrast coronagraphic imager. The simulator implements physical optics: a complex dist…
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…
Alignment and preliminary outcomes of an ELT-size instrument to a very large telescope: LINC-NIRVANA at LBT
M. Bergomi, L. Marafatto, V. Viotto +14
LINC-NIRVANA (LN) is a high resolution, near infrared imager that uses a multiple field-of-view, layer-oriented, multi-conjugate AO system, consisting of four multi-pyramid wavefro…
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),…
GMCAO simulation tool development
Valentina Viotto, Elisa Portaluri, Roberto Ragazzoni +6
Global MCAO aims to exploit a very wide technical field of view to find AO-suitable NGSs, with the goal to increase the overall sky coverage. The concept foresees the use of numeri…
To PLAnetary Transit Or NOT? An extremely large field of view camera with a CaF2 component tested in thermo-vacuum
M. Bergomi, D. Magrin, J. Farinato +13
Because of its nicely chromatic behavior, Calcium Fluoride (CaF2) is a nice choice for an optical designer as it can easily solve a number of issues, giving the right extra degree…