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Proceedings Paper

Precise angular positioning at 6K: the FIFI-LS grating assembly
Author(s): Felix Rebell; Walfried Raab; Sebastian Colditz; Simon Beckmann; Aaron Bryant; Christian Fischer; Fabio Fumi; Norbert Geis; Rainer Hönle; Randolf Klein; Alfred Krabbe; Leslie Looney; Albrecht Poglitsch; Sarah Ragan; Maureen Savage
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Paper Abstract

The Field Imaging Far Infrared Line Spectrometer (FIFI-LS) obtains spectral data within two wavelength ranges. The observed wavelengths are set by rotating the two diffraction gratings to specific angles. This paper describes on the grating assemblies, designed to rotate and stabilize the gratings. First the assembly itself and its special environment inside FIFI-LS is explained. Then a method is layed out how to monitor the performance of the drive and how to detect upcoming failures before they happen. The last chapter is dedicated to first inflight measurements of the position stability of the grating.

Paper Details

Date Published: 8 July 2014
PDF: 9 pages
Proc. SPIE 9147, Ground-based and Airborne Instrumentation for Astronomy V, 914735 (8 July 2014); doi: 10.1117/12.2055458
Show Author Affiliations
Felix Rebell, Univ. Stuttgart (Germany)
Walfried Raab, Max-Planck-Institut für extraterrestrische Physik (Germany)
Sebastian Colditz, Univ. Stuttgart (Germany)
Simon Beckmann, Univ. Stuttgart (Germany)
Aaron Bryant, Univ. Stuttgart (Germany)
Christian Fischer, Univ. Stuttgart (Germany)
Fabio Fumi, Univ. Stuttgart (Germany)
Norbert Geis, Max-Planck-Institut für extraterrestrische Physik (Germany)
Rainer Hönle, Univ. Stuttgart (Germany)
Randolf Klein, SOFIA-USRA, NASA Ames Research Ctr. (United States)
Alfred Krabbe, Univ. Stuttgart (Germany)
Deutsches SOFIA Institut (Germany)
Leslie Looney, Univ. of Illinois at Urbana-Champaign (United States)
Albrecht Poglitsch, Max-Planck-Institut für extraterrestrische Physik (Germany)
Sarah Ragan, Max-Planck Institut fuer Astronomie (Germany)
Maureen Savage, SOFIA-USRA, NASA Ames Research Ctr. (United States)


Published in SPIE Proceedings Vol. 9147:
Ground-based and Airborne Instrumentation for Astronomy V
Suzanne K. Ramsay; Ian S. McLean; Hideki Takami, Editor(s)

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