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Proceedings Paper

The SOFIA far-infrared spectrometer FIFI-LS: spearheading a post Herschel era
Author(s): Sebastian Colditz; Fabio Fumi; Norbert Geis; Rainer Hönle; Randolf Klein; Alfred Krabbe; Leslie Looney; Albrecht Poglitsch; Walfried Raab; Maureen Savage; Felix Rebell; Christian Fischer
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Paper Abstract

FIFI-LS (Field-Imaging Far-Infrared Line Spectrometer) is an imaging spectrograph for SOFIA comprised of two medium resolution (R~2200) grating spectrometers feeding two 16x25 pixel detector arrays, which enable simultaneous line observations across two wavelength ranges (42-110 μm and 110-210μm) each across a field of view of 5x5 pixel. FIFI-LS will be the extragalactic spectroscopic workhorse for SOFIA. FIFI-LS has enough sensitivity to observe a substantial sample of nearby galaxies. It also has the right combination of wavelength range and spatial resolution to carry out unique new observations beyond those possible with Herschel, Spitzer, ISO and IRAS. As the effective sensitivity of FIFI-LS is only about a factor of 3-5 lower than the PACS spectrometer onboard Herschel, mainly due to an enhanced multiplexing advantage, FIFI-LS will build upon recent exciting scientific results and spearhead the post- Herschel far-infrared era. FIFI-LS is scheduled for commissioning onboard SOFIA in early 2014. An account on the instrument and its current stratus will be presented.

Paper Details

Date Published: 24 September 2012
PDF: 11 pages
Proc. SPIE 8446, Ground-based and Airborne Instrumentation for Astronomy IV, 844617 (24 September 2012); doi: 10.1117/12.924510
Show Author Affiliations
Sebastian Colditz, Univ. of Stuttgart (Germany)
Fabio Fumi, Univ. of Stuttgart (Germany)
Norbert Geis, Max-Planck-Institut für extraterrestrische Physik (Germany)
Rainer Hönle, Max-Planck-Institut für extraterrestrische Physik (Germany)
Randolf Klein, SOFIA-USRA, NASA Ames Research Ctr. (United States)
Alfred Krabbe, Univ. of Stuttgart (Germany)
Deutsches SOFIA Institut (Germany)
Leslie Looney, Univ. of Illinois (United States)
Albrecht Poglitsch, Max-Planck-Institut für extraterrestrische Physik (Germany)
Walfried Raab, Max-Planck-Institut für extraterrestrische Physik (Germany)
Maureen Savage, SOFIA-USRA, NASA Ames Research Ctr. (United States)
Felix Rebell, Univ. of Stuttgart (Germany)
Christian Fischer, Univ. of Stuttgart (Germany)

Published in SPIE Proceedings Vol. 8446:
Ground-based and Airborne Instrumentation for Astronomy IV
Ian S. McLean; Suzanne K. Ramsay; Hideki Takami, Editor(s)

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