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Proceedings Paper

4MOST metrology system image processing
Author(s): Roland Winkler; Samuel C. Barden; Allar Saviauk
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Paper Abstract

The 4-meter Multi-Object Spectroscopic Telescope (4MOST) instrument uses ~ 2400 individually positioned optical fibres to couple the light of targets into its spectrographs. The metrology system determines the position of the back-illuminated fibres on the focal surface of the telescope. It consists of 4 identical cameras that are mounted on the spider vanes of the secondary mirror of the VISTA telescope and look through the entire optical train, including M1, M2 and the WFC/ADC unit. Here, we describe the image and data processing steps of the metrology system as well as present results from our 1 in 10 sized lab prototype.

Paper Details

Date Published: 9 August 2016
PDF: 20 pages
Proc. SPIE 9908, Ground-based and Airborne Instrumentation for Astronomy VI, 990891 (9 August 2016); doi: 10.1117/12.2233257
Show Author Affiliations
Roland Winkler, Leibniz-Institut für Astrophysik Potsdam (Germany)
Samuel C. Barden, Leibniz-Institut für Astrophysik Potsdam (Germany)
Allar Saviauk, 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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