8 July 2014 The ZIMPOL high contrast imaging polarimeter for SPHERE: system test results
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SPHERE (Spectro-Polarimetric High-contrast Exoplanet Research) is a new instrument for the VLT aimed at the direct detection of exo-planets. It has received its first light in May 2014. ZIMPOL (Zurich Imaging Polarimeter) is the imaging polarimeter subsystem of the SPHERE instrument. It's capable of both high accuracy and high sensitivity polarimetry but can also be used as a classical imager. It is located behind an extreme AO system and a stellar coronagraph. ZIMPOL operates at visible wavelengths (600-900 nm) which is best suited to detect the very faint reflected and hence polarized visible light from extra solar planets. It has an instantaneous Field of View of 3 x 3 arcsec2 (extendable to 8 arcsec diameter) with an angular resolution of 14 mili-arcsec. We discuss the results that are obtained from the full SPHERE-ZIMPOL system testing. In particular the optical, polarimetric and high contrast performance.
© (2014) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Ronald Roelfsema, Ronald Roelfsema, Andreas Bazzon, Andreas Bazzon, Hans Martin Schmid, Hans Martin Schmid, Johan Pragt, Johan Pragt, Daniel Gisler, Daniel Gisler, Carsten Dominik, Carsten Dominik, Andrea Baruffolo, Andrea Baruffolo, Jean-Luc Beuzit, Jean-Luc Beuzit, Anne Costille, Anne Costille, Kjetil Dohlen, Kjetil Dohlen, Mark Downing, Mark Downing, Eddy Elswijk, Eddy Elswijk, Menno de Haan, Menno de Haan, Norbert Hubin, Norbert Hubin, Markus Kasper, Markus Kasper, Christoph Keller, Christoph Keller, Jean-Louis Lizon, Jean-Louis Lizon, David Mouillet, David Mouillet, Alexey Pavlov, Alexey Pavlov, Pascal Puget, Pascal Puget, Bernardo Salasnich, Bernardo Salasnich, Jean-Francois Sauvage, Jean-Francois Sauvage, Francois Wildi, Francois Wildi, } "The ZIMPOL high contrast imaging polarimeter for SPHERE: system test results", Proc. SPIE 9147, Ground-based and Airborne Instrumentation for Astronomy V, 91473W (8 July 2014); doi: 10.1117/12.2056493; https://doi.org/10.1117/12.2056493


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