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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents



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ID: 559429.0, MPI für Astronomie / Publikationen_mpia
The ZIMPOL high-contrast imaging polarimeter for SPHERE: design, manufacturing, and testing
Authors:Roelfsema, Ronald; Schmid, Hans Martin; Pragt, Johannes; Gisler, Daniel; Waters, Rens; Bazzon, Andreas; Baruffolo, Andrea; Beuzit, Jean-Luc; Boccaletti, Anthony; Charton, Julien; Cumani, Claudio; Dohlen, Kjetil; Downing, Mark; Elswijk, Eddy; Feldt, Markus; Groothuis, Charlotte; de Haan, Menno; Hanenburg, Hiddo; Hubin, Norbert; Joos, Franco; Kasper, Markus; Keller, Christoph; Kragt, Jan; Lizon, Jean-Louis; Mouillet, David; Pavlov, Aleksej; Rigal, Florence; Rochat, Sylvain; Salasnich, Bernardo; Steiner, Peter; Thalmann, Christian; Venema, Lars; Wildi, François
Language:English
Publisher:SPIE
Place of Publication:Bellingham, Wash.
Date of Publication (YYYY-MM-DD):2010
Title of Proceedings:Ground-based and Airborne Instrumentation for Astronomy III
Start Page:77354B-77354B
End Page:17
Title of Series:SPIE
Volume (in Series):7735
Name of Conference/Meeting:Ground-based and Airborne Instrumentation for Astronomy III
Review Status:not specified
Audience:Experts Only
Abstract / Description:ZIMPOL is the high contrast imaging polarimeter subsystem of the ESO SPHERE instrument. ZIMPOL is dedicated to detect the very faint reflected and hence polarized visible light from extrasolar planets. ZIMPOL is located behind an extreme AO system (SAXO) and a stellar coronagraph. SPHERE is foreseen to have first light at the VLT at the end of 2011. ZIMPOL is currently in the manufacturing, integration and testing phase. We describe the optical, polarimetric, mechanical, thermal and electronic design as well as the design trade offs. Specifically emphasized is the optical quality of the key performance component: the Ferro-electric Liquid Crystal polarization modulator (FLC). Furthermore, we describe the ZIMPOL test setup and the first test results on the achieved polarimetric sensitivity and accuracy. These results will give first indications for the expected overall high contrast system performance. SPHERE is an instrument designed and built by a consortium consisting of LAOG, MPIA, LAM, LESIA, Fizeau, INAF, Observatoire de Genève, ETH, NOVA, ONERA and ASTRON in collaboration with ESO.
Comment of the Author/Creator:Date: 2010, July 1, 2010
External Publication Status:published
Document Type:Conference-Paper
Communicated by:N. N.
Affiliations:MPI für Astronomie
Identifiers:URL:http://adsabs.harvard.edu/abs/2010SPIE.7735E.144R [ID No:1]
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