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Proceedings Paper

A spectropolarimetric focal station for the ESO E-ELT
Author(s): Klaus G. Strassmeier; Igor DiVarano; Ilya Ilyin; Manfred Woche; Uwe Laux
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Paper Abstract

We present a conceptual design for a spectropolarimetric focal station for ESO's European Extremely Large Telescope (E-ELT). It uses the intermediate f/4.4 focus, the only symmetric focus of the telescope. A dual channel, full Stokesvector polarimeter provides on-axis light for the wavelength range 380-1600nm to up to two spectrographs simultaneously via two pairs of fibers. With such spectropolarimetric capability and a proper spectrograph for the optical and the near infrared wavelengths, the E-ELT would be able to provide the full parameter space of an incoming wavefront. Because of the on-axis entrance location of the polarimeter collimator and an entrance aperture of just 1.3 arcsec, the expected poor image quality of the intermediate telescope focus is not directly relevant.

Paper Details

Date Published: 17 September 2012
PDF: 12 pages
Proc. SPIE 8444, Ground-based and Airborne Telescopes IV, 844435 (17 September 2012); doi: 10.1117/12.926009
Show Author Affiliations
Klaus G. Strassmeier, Leibniz-Institut für Astrophysik Potsdam (Germany)
Igor DiVarano, Leibniz-Institut für Astrophysik Potsdam (Germany)
Ilya Ilyin, Leibniz-Institut für Astrophysik Potsdam (Germany)
Manfred Woche, Leibniz-Institut für Astrophysik Potsdam (Germany)
Uwe Laux, Thüringer Landessternwarte Tautenburg (Germany)

Published in SPIE Proceedings Vol. 8444:
Ground-based and Airborne Telescopes IV
Larry M. Stepp; Roberto Gilmozzi; Helen J. Hall, Editor(s)

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