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Proceedings Paper

Commissioning of an integral-field spectro-polarimeter for PMAS
Author(s): Ulrike Lemke; Andreas Kelz; Svend M. Bauer; Thomas Hahn; Emil Popow; Martin M. Roth
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Paper Abstract

During 2007, a new polarimetric observing mode was added to the existing integral-field spectrograph PMAS. Initially, this instrumental upgrade is aimed to measure the linear polarization states and to determine the three Stokes parameters I, Q and U. The PMAS instrument offers an integral-field of view of up to 256 square arcseconds, while the spectrograph covers a wavelength region from 340 to 900 nm. The paper presents the opto-mechanical design of the polarimetric unit, summarizes calibration and test results and describes the first data taken during commissioning at the Calar Alto observatory. Given the range of applications and the large parameter space (two spatial coordinates, one wavelength dimension, plus polarimetric information), the realization of the PMAS 2D-Spectro-Polarimeter provides a unique capability for night-time astrophysical observations, such as the study of scattering processes or magnetic fields for a range of astronomical targets.

Paper Details

Date Published: 11 July 2008
PDF: 10 pages
Proc. SPIE 7014, Ground-based and Airborne Instrumentation for Astronomy II, 701456 (11 July 2008); doi: 10.1117/12.789370
Show Author Affiliations
Ulrike Lemke, Astrophysikalisches Institut Potsdam (Germany)
Humboldt Univ. zu Berlin (Germany)
Andreas Kelz, Astrophysikalisches Institut Potsdam (Germany)
Svend M. Bauer, Astrophysikalisches Institut Potsdam (Germany)
Thomas Hahn, Astrophysikalisches Institut Potsdam (Germany)
Emil Popow, Astrophysikalisches Institut Potsdam (Germany)
Martin M. Roth, Astrophysikalisches Institut Potsdam (Germany)

Published in SPIE Proceedings Vol. 7014:
Ground-based and Airborne Instrumentation for Astronomy II
Ian S. McLean; Mark M. Casali, Editor(s)

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