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4MOST fibre feed: performance and final design
Author(s): Dionne M. Haynes; Allar Saviauk; Andreas Kelz; Roger Haynes; Thomas Jahn; Dennis Plüschke; Swara Rahurkar; Florian Zscheyge; Johannes Piotrowski; Rebecca Brown
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Paper Abstract

The 4MOST1 instrument is a multi-object-spectrograph for the ESO-VISTA telescope. The 4MOST long fiber feed links the AESOP2 fiber positioner to two low-resolution spectrographs (1624 fibers) and one high-resolution spectrograph (812 fibers). In addition to the 2436 science fibers, the system includes guide fiber bundles, metrology fiducial fibers and simultaneous calibration fibers for the spectrographs. To validate the design approaches, including fiber connectors and cable rotator, pre-production fiber cables have been built and evaluated. This paper presents the near final design of the fiber feed subsystem and its performance results pertaining to throughput homogeneity, focal ratio degradation, and connector loss of the pre-production cables.

Paper Details

Date Published: 10 July 2018
PDF: 19 pages
Proc. SPIE 10702, Ground-based and Airborne Instrumentation for Astronomy VII, 1070289 (10 July 2018); doi: 10.1117/12.2313704
Show Author Affiliations
Dionne M. Haynes, Leibniz-Institut für Astrophysik Potsdam (Germany)
Allar Saviauk, Leibniz-Institut für Astrophysik Potsdam (Germany)
Andreas Kelz, Leibniz-Institut für Astrophysik Potsdam (Germany)
Roger Haynes, Leibniz-Institut für Astrophysik Potsdam (Germany)
Thomas Jahn, Leibniz-Institut für Astrophysik Potsdam (Germany)
Dennis Plüschke, Leibniz-Institut für Astrophysik Potsdam (Germany)
Swara Rahurkar, Leibniz-Institut für Astrophysik Potsdam (Germany)
Florian Zscheyge, Leibniz-Institut für Astrophysik Potsdam (Germany)
Johannes Piotrowski, Leibniz-Institut für Astrophysik Potsdam (Germany)
Rebecca Brown, Australian Astronomical Observatory (Australia)


Published in SPIE Proceedings Vol. 10702:
Ground-based and Airborne Instrumentation for Astronomy VII
Christopher J. Evans; Luc Simard; Hideki Takami, Editor(s)

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