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Proceedings Paper • Open Access

Verification of the optical system performance of FIFI-LS: the field-imaging far-infrared line spectrometer for SOFIA
Author(s): Mario Schweitzer; Albrecht Poglitsch; Walfried Raab; Randolf Klein; Rainer Hönle; Norbert Geis; Reinhard Genzel; Leslie W. Looney; M. Hamidouche; Thomas K. Henning

Paper Abstract

FIFI-LS is a Field-Imaging Line Spectrometer designed for the SOFIA airborne observatory. The instrument will operate in the far infrared (FIR) wavelength range from 42 to 210 μm. Two spectrometers operating between 42-110 μm and 110-210 μm allow simultaneous and independent diffraction limited 3D imaging over a field of view of 6" × 6" and 12" × 12" respectively. We have developed a telescope simulator to test the imaging and spectral performance of FIFI-LS in the FIR. Here, we present the telescope simulator as well as the performance verification of FIFI-LS using the simulator. Finally we compare the measurements with the theoretical expected performance of FIFI-LS.

Paper Details

Date Published: 25 July 2008
PDF: 10 pages
Proc. SPIE 7014, Ground-based and Airborne Instrumentation for Astronomy II, 70140Z (25 July 2008);
Show Author Affiliations
Mario Schweitzer, Max-Planck-Institut für extraterrestrische Physik (Germany)
Albrecht Poglitsch, Max-Planck-Institut für extraterrestrische Physik (Germany)
Walfried Raab, Max-Planck-Institut für extraterrestrische Physik (Germany)
Randolf Klein, Univ. of California, Berkeley (United States)
Rainer Hönle, Max-Planck-Institut für extraterrestrische Physik (Germany)
Norbert Geis, Max-Planck-Institut für extraterrestrische Physik (Germany)
Reinhard Genzel, Max-Planck-Institut für extraterrestrische Physik (Germany)
Leslie W. Looney, Univ. of Illinois, Urbana-Champaign (United States)
M. Hamidouche, Univ. of Illinois, Urbana-Champaign (United States)
Thomas K. Henning, Max-Planck-Institut für Astronomie (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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