• A fixed plate to remove spheri...

Treffer: A fixed plate to remove spherical aberration in Rayleigh laser guide stars

Title:
A fixed plate to remove spherical aberration in Rayleigh laser guide stars
Authors:
RAGAZZONI, R, TORDI, M, DIOLAITI, E
Source:
Optics communications. 194(4-6):243-250
Publisher Information:
Amsterdam: Elsevier Science, 2001.
Publication Year:
2001
Physical Description:
print, 21 ref
Original Material:
INIST-CNRS
Subject Terms:
Electronics, Electronique, Optics, Optique, Telecommunications, Télécommunications, Sciences exactes et technologie, Exact sciences and technology, Physique, Physics, Domaines classiques de la physique (y compris les applications), Fundamental areas of phenomenology (including applications), Optique, Optics, Optique atmosphérique, Atmospheric optics, Télédétection; lidar et systèmes adaptatifs, Remote sensing; lidar and adaptive systems, Terre, ocean, espace, Earth, ocean, space, Astronomie, Astronomy, Astronomie fondamentale et astrophysique. Instrumentation, techniques, et observations astronomiques, Fundamental astronomy and astrophysics. Instrumentation, techniques, and astronomical observations, Techniques d'observation et de réduction des données. Simulation et modélisation par ordinateur, Observation and data reduction techniques. Computer modeling and simulation, Optique adaptative et segmentée, Adaptive and segmented optics, Remote sensing; LIDAR and adaptive systems, Aberration sphérique, Spherical aberration, Aberración esférica, Etoile guide artificielle, Artificial guide stars, Etude théorique, Theoretical study, Optique adaptative, Adaptive optics, Système optique, Optical systems, Tracé rayon, Ray tracing, Télescope, Telescopes
Document Type:
Fachzeitschrift Article
File Description:
text
Language:
English
Author Affiliations:
Astronomical Observatory of Padova, Vicolo dell'Osservatorio 5, 35122 Padova, Italy
Department of Astronomy, University of Padova, Vicolo dell'Osservatorio 2, 35122 Padova, Italy
Department of Astronomy, University of Bologna, Via Ranzani 1, 40126 Bologna, Italy
ISSN:
0030-4018
Access URL:
http://pascal-francis.inist.fr/vibad/index.php?action=search&terms=1058388
Rights:
Copyright 2001 INIST-CNRS
CC BY 4.0
Sauf mention contraire ci-dessus, le contenu de cette notice bibliographique peut être utilisé dans le cadre d’une licence CC BY 4.0 Inist-CNRS / Unless otherwise stated above, the content of this bibliographic record may be used under a CC BY 4.0 licence by Inist-CNRS / A menos que se haya señalado antes, el contenido de este registro bibliográfico puede ser utilizado al amparo de una licencia CC BY 4.0 Inist-CNRS
Notes:
Astronomy

Physics: optics
Accession Number:
edscal.1058388
Database:
PASCAL Archive

Weitere Informationen

Using a Rayleigh beacon as reference source for an adaptive optics system, the latter can be limited by the differential aberrations introduced by the telescope optics on the image of the spot, namely some spherical aberrations introduced by the different range of the beacon with respect to the science target. The introduction of new concepts about wavefront sensing along an extended range of altitudes makes urgent the solution of this problem. In this paper we analyze the possibility to provide such a correction using a simple optical device, actually a Schmidt-like plate. We demonstrate that such a solution exists, for which the residual aberration can be nulled up to the second order in the displacement from a pre-defined point along the optical axis. A couple of examples, verified by a ray-tracing analysis, are also reported.