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Proceedings Paper

PEPSI: the Potsdam Echelle Polarimetric and Spectroscopic Instrument for the LBT
Author(s): K. G. Strassmeier; M. Woche; I. Ilyin; E. Popow; S.-M. Bauer; F. Dionies; T. Fechner; M. Weber; A. Hofmann; J. Storm; R. Materne; W. Bittner; J. Bartus; T. Granzer; C. Denker; T. Carroll; M. Kopf; I. DiVarano; E. Beckert; M. Lesser
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Paper Abstract

We present the status of PEPSI, the bench-mounted fibre-fed and stabilized "Potsdam Echelle Polarimetric and Spectroscopic Instrument" for the 2×8.4m Large Binocular Telescope in southern Arizona. PEPSI is under construction at AIP and is scheduled for first light in 2009/10. Its ultra-high-resolution mode will deliver an unprecedented spectral resolution of approximately R=310,000 at high efficiency throughout the entire optical/red wavelength range 390-1050nm without the need for adaptive optics. Besides its polarimetric Stokes IQUV mode, the capability to cover the entire optical range in three exposures at resolutions of 40,000, 130,000 and 310,000 will surpass all existing facilities in terms of light-gathering-power times spectral-coverage product. A solar feed will make use of the spectrograph also during day time. As such, we hope that PEPSI will be the most powerful spectrometer of its kind for the years to come.

Paper Details

Date Published: 25 July 2008
PDF: 12 pages
Proc. SPIE 7014, Ground-based and Airborne Instrumentation for Astronomy II, 70140N (25 July 2008); doi: 10.1117/12.787376
Show Author Affiliations
K. G. Strassmeier, Astrophysical Institute Potsdam (Germany)
M. Woche, Astrophysical Institute Potsdam (Germany)
I. Ilyin, Astrophysical Institute Potsdam (Germany)
E. Popow, Astrophysical Institute Potsdam (Germany)
S.-M. Bauer, Astrophysical Institute Potsdam (Germany)
F. Dionies, Astrophysical Institute Potsdam (Germany)
T. Fechner, Astrophysical Institute Potsdam (Germany)
M. Weber, Astrophysical Institute Potsdam (Germany)
A. Hofmann, Astrophysical Institute Potsdam (Germany)
J. Storm, Astrophysical Institute Potsdam (Germany)
R. Materne, Astrophysical Institute Potsdam (Germany)
W. Bittner, Astrophysical Institute Potsdam (Germany)
J. Bartus, Astrophysical Institute Potsdam (Germany)
T. Granzer, Astrophysical Institute Potsdam (Germany)
C. Denker, Astrophysical Institute Potsdam (Germany)
T. Carroll, Astrophysical Institute Potsdam (Germany)
M. Kopf, Astrophysical Institute Potsdam (Germany)
I. DiVarano, Astrophysical Institute Potsdam (Germany)
E. Beckert, Fraunhofer-Institute for Applied Optics and Engineering (Germany)
M. Lesser, Univ. of Arizona (United States)


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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