Zobrazeno 1 - 10
of 92
pro vyhledávání: '"Alexander V. Goncharov"'
Publikováno v:
Journal of Astronomical Telescopes, Instruments, and Systems. 8
Publikováno v:
Optics express. 30(4)
An analytically designed aplanatic meniscus lens is proposed for increasing the field of view (FoV) of Ritchey-Chrétien (RC) telescopes. Compared to other field correctors, the proposed solution does not affect the initial RC telescope’s aplanatic
Autor:
Alexander V. Goncharov, Conor Flynn
Publikováno v:
Computational Optics 2021.
Light propagation in non-homogeneous media with varying refractive index is challenging to analyse, even with knowledge of the gradient index (GRIN) structure n(x,y,z). Differential equations can be used to describe the path light rays take when trav
Publikováno v:
Optical Design and Engineering VIII.
A quasi-aplanatic two-lens design is proposed to correct astigmatism in Ritchey-Chr´etien (RC) telescopes at different spectral bands. This pair of lenses is designed analytically so that it can be used in existing RC telescopes without any modifica
Autor:
Alexander V. Goncharov, Conor J. Sheil
Publikováno v:
Optics Communications. 440:207-213
This paper describes the design of a small form-factor lens for use in portraiture photography. The current general requirement of mobile cameras having good all-round performance results in a typical, familiar, multi-lens design. Such designs have l
Autor:
Ugo Di Giammatteo, Paolo Ciliegi, Christophe Verinaud, Marie-Helene Sztefek, Marco Riva, Matteo Aliverti, Vincenzo De Caprio, Daniela Fantinel, Lorenzo Busoni, A. Valentini, Carmelo Arcidiacono, Nicholas Devaney, Christian Eredia, Enrico Giro, Andrea Baruffolo, Sylvain Rochat, Matteo Munari, Maria Bergomi, Marco Bonaglia, Edoardo Maria Alberto Redaelli, Andrea Bianco, Laurance Gluck, Mauro Dolci, Roberto Ragazzoni, Miska Le Louarn, A. Balestra, Sylvain Oberti, Marco Xompero, Simonetta Chinellato, Michele Cantiello, Paolo Grani, Simone Esposito, Hubert Zoltan, Demetrio Magrin, Patrick Rabou, Ivan Di Antonio, Lorenzo Pettazzi, Deborah Malone, Jacopo Farinato, Pierre Haguenauer, Enrico Cascone, Amico Di Cianno, Giorgio Pariani, Andrew Rakich, Jean-Jacques Correia, Alfio Puglisi, G. Rodeghiero, François Hénault, Italo Foppiani, G. Cosentino, Luca Marafatto, Cedric Plantet, Guido Agapito, Alexander V. Goncharov, Marco Gullieuszik, Vincenzo Cianniello, Rosanna Sordo, Gianluca Di Rico, Elisa Portaluri, Bernardo Salasnich, Philippe Feautrier
Publikováno v:
Adaptive Optics Systems VII.
MAORY is a post-focal adaptive optics module that forms part of the first light instrument suite for the ELT. The main function of MAORY is to relay the light beam from the ELT focal plane to the client instrument while compensating the effects of th
Publikováno v:
Adaptive Optics Systems VII.
The ESO ELT is expected to come into operation in 2025 and it will be the largest optical telescope in the world. Its performance relies heavily on Adaptive Optics (AO) systems including the integrated adaptive M4 mirror in the ELT and post focus MAO
Autor:
Nicholas Devaney, Marco Riva, Sylvain Oberti, Vincenzo Cianniello, A. Valentini, Lorenzo Busoni, Enrico Cascone, Paolo Ciliegi, V. De Caprio, G. Di Rico, G. Rodeghiero, Edoardo Maria Alberto Redaelli, Christian Eredia, Alexander V. Goncharov, Mauro Dolci, I. Di Antonio
Publikováno v:
Adaptive Optics Systems VII.
MAORY (Multi-conjugate Adaptive Optics RelaY) is one of the first light instruments for the ESO Extremely Large Telescope (ELT). It will be firstly used by MICADO (Multi-AO Imaging CamerA for Deep Observations), a near-infrared high-angular resolutio
Publikováno v:
Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation IV.
An afocal meniscus lens is proposed for reducing intrinsic astigmatism in an RC telescope. In comparison to existing solutions using thin aspheric plates near focus, the proposed solution does not disrupt the aplanatic correction of the initial RC de
Publikováno v:
Frontiers in Optics / Laser Science.
We compare the peripheral refractive errors of two young eye models containing a constant refractive index lens and a more anatomically correct GRIN lens, respectively. We find the GRIN lens causes a peripheral myopic shift.