Verification of the optical system performance of FIFI-LS: the field-imaging far-infrared line spectrometer for SOFIA

Mario Schweitzer; Albrecht Poglitsch; Walfried Raab; Randolf Klein; Rainer Hönle; Norbert Geis; Reinhard Genzel; Leslie W. Looney; M. Hamidouche; Thomas K. Henning

doi:10.1117/12.787383

25 July 2008 Verification of the optical system performance of FIFI-LS: the field-imaging far-infrared line spectrometer for SOFIA

Mario Schweitzer, Albrecht Poglitsch, Walfried Raab, Randolf Klein, Rainer Hönle, Norbert Geis, Reinhard Genzel, Leslie W. Looney, M. Hamidouche, Thomas K. Henning

Author Affiliations +

Proceedings Volume 7014, Ground-based and Airborne Instrumentation for Astronomy II; 70140Z (2008) https://doi.org/10.1117/12.787383
Event: SPIE Astronomical Telescopes + Instrumentation, 2008, Marseille, France

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.

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Mario Schweitzer, Albrecht Poglitsch, Walfried Raab, Randolf Klein, Rainer Hönle, Norbert Geis, Reinhard Genzel, Leslie W. Looney, M. Hamidouche, and Thomas K. Henning "Verification of the optical system performance of FIFI-LS: the field-imaging far-infrared line spectrometer for SOFIA", Proc. SPIE 7014, Ground-based and Airborne Instrumentation for Astronomy II, 70140Z (25 July 2008); https://doi.org/10.1117/12.787383

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KEYWORDS

Device simulation

Telescopes

Spectroscopy

Diffraction

Sensors

Mirrors

Far infrared

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