Apodized Lyot Coronagraph for VLT-SPHERE: Laboratory tests and performances of a first prototype in the visible

Simple item page
dc.creatorGuerri, Géraldine
dc.creatorRobbe-Dubois, Sylvie
dc.creatorDaban, Jean-Baptiste
dc.creatorAbe, Lyu
dc.creatorDouet, Richard
dc.creatorBendjoya, Philippe
dc.creatorVakili, Farrokh
dc.creatorCarbillet, Marcel
dc.creatorBeuzit, Jean-Luc
dc.creatorPuget, Pascal
dc.creatorDohlen, Kjetil
dc.creatorMouillet, David
dc.date2009-01-16
dc.date.accessioned2026-07-07T12:32:03Z
dc.date.available2026-07-07T12:32:03Z
dc.descriptionWe present some of the High Dynamic Range Imaging activities developed around the coronagraphic test-bench of the Laboratoire A. H. Fizeau (Nice). They concern research and development of an Apodized Lyot Coronagraph (ALC) for the VLT-SPHERE instrument and experimental results from our testbed working in the visible domain. We determined by numerical simulations the specifications of the apodizing filter and searched the best technological process to manufacture it. We present the results of the experimental tests on the first apodizer prototype in the visible and the resulting ALC nulling performances. The tests concern particularly the apodizer characterization (average transmission radial profile, global reflectivity and transmittivity in the visible), ALC nulling performances compared with expectations, sensitivity of the ALC performances to misalignments of its components.
dc.identifierhttps://arxiv.org/abs/0901.2429
dc.identifierhttp://arxiv.org/abs/0901.2429
dc.identifierAstronomical Telescopes and Instrumentation, Marseille : France (2008)
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/216654
dc.subjectInstrumentation and Methods for Astrophysics
dc.titleApodized Lyot Coronagraph for VLT-SPHERE: Laboratory tests and performances of a first prototype in the visible
dc.typetext

Files

Collections

arXiv