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Proceedings Paper

4MOST fiber feed preliminary design: prototype testing and performance
Author(s): Dionne M. Haynes; Andreas Kelz; Samuel C. Barden; Svend-Marian Bauer; Katjana Ehrlich; Roger Haynes; Thomas Jahn; Allar Saviauk; Roelof S. de Jong
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Paper Abstract

The 4MOST instrument is a multi-object-spectrograph for the ESO-VISTA telescope. The 4MOST fiber feed subsystem is composed of a fiber positioner (AESOP) holding 2436 science fibers based on the Echidna tilting spine concept, and the fiber cable, which feeds two low-resolution spectrographs (1624 fibers) and one high-resolution spectrograph (812 fibers). In order to optimize the fiber feed subsystem design and provide essential information required for the spectrograph design, prototyping and testing has been undertaken. In this paper we give an overview of the current fiber feed subsystem design and present the preliminary FRD, scrambling, throughput and system performance impact results for: maximum and minimum spine tilt, fiber connectors, cable de-rotator simulator for fiber cable lifetime tests.

Paper Details

Date Published: 8 August 2016
PDF: 19 pages
Proc. SPIE 9908, Ground-based and Airborne Instrumentation for Astronomy VI, 99088I (8 August 2016); doi: 10.1117/12.2232735
Show Author Affiliations
Dionne M. Haynes, Leibniz-Institut für Astrophysik Potsdam (Germany)
Andreas Kelz, Leibniz-Institut für Astrophysik Potsdam (Germany)
Samuel C. Barden, Leibniz-Institut für Astrophysik Potsdam (Germany)
Svend-Marian Bauer, Leibniz-Institut für Astrophysik Potsdam (Germany)
Katjana Ehrlich, Leibniz-Institut für Astrophysik Potsdam (Germany)
Roger Haynes, Leibniz-Institut für Astrophysik Potsdam (Germany)
Thomas Jahn, Leibniz-Institut für Astrophysik Potsdam (Germany)
Allar Saviauk, Leibniz-Institut für Astrophysik Potsdam (Germany)
Roelof S. de Jong, Leibniz-Institut für Astrophysik Potsdam (Germany)


Published in SPIE Proceedings Vol. 9908:
Ground-based and Airborne Instrumentation for Astronomy VI
Christopher J. Evans; Luc Simard; Hideki Takami, Editor(s)

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