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ELT-HIRES the high resolution spectrograph for the ELT: fiber link
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Paper Abstract

ELT-HIRES is the high resolution and ultra-stable Echelle spectrograph for the ELT. It has been conceived as a modular instrument provided with two independent spectrometers (the baseline design) and a possible extension to four, each of them optimized to cover a fixed spectral range. The role of the fibers is essential to provide the required ultrastability. Placed at the Nasmyth focus of the ELT, the HIRES fiber link transfers the light from the focal plane to the spectrographs. Each observing modes will be use a unique and independent group of fibers (bundle). The HIRES modular design makes it possible to have new observing modes just with the addition, removal or change of the specific bundles. From a functional point of view the HIRES fiber link subsystem performs some other important tasks, such as dicing the field of view, improving the system stability and providing a uniformly illuminated slit for spectrographs. It is a key subsystem for the instrument and represents a significant technological challenge. The technical requirements, conceptual design and technologies to be used are discussed in this paper. The current status of the subsystem, and future plans are also addressed.

Paper Details

Date Published: 10 July 2018
PDF: 15 pages
Proc. SPIE 10702, Ground-based and Airborne Instrumentation for Astronomy VII, 107028S (10 July 2018); doi: 10.1117/12.2311639
Show Author Affiliations
Ana B. Fragoso-López, Instituto de Astrofísica de Canarias (Spain)
José Luis Rasilla, Instituto de Astrofísica de Canarias (Spain)
Graham J. Murray, Durham Univ. (United Kingdom)
Ernesto Oliva, INAF - Osservatorio Astrofisico di Arcetri (Italy)
Robert J. Harris, Zentrum für Astronomie der Univ. Heidelberg (Germany)
Roger Haynes, Leibniz-Institut für Astrophysik Potsdam (AIP) (Germany)
Marco Riva, Istituto Nazionale di Astrofisica - Osservatorio Astronomico di Brera (Italy)
Alessandro Marconi, Univ. di Firenze (Italy)

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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