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Proceedings Paper

Introducing CUBES: the Cassegrain U-band Brazil-ESO spectrograph
Author(s): Paul Bristow; Beatriz Barbuy; Vanessa Bawden Macanhan; Bruno Castilho; Hans Dekker; Bernard Delabre; Marcos Diaz; Clemens Gneiding; Florian Kerber; Harald Kuntschner; Giovanni La Mura; Roland Reiss; J. Vernet
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Paper Abstract

CUBES is a high-efficiency, medium-resolution (R ≃ 20, 000) spectrograph dedicated to the “ground based UV” (approximately the wavelength range from 300 to 400nm) destined for the Cassegrain focus of one of ESO’s VLT unit telescopes in 2018/19. The CUBES project is a joint venture between ESO and Instituto de Astronomia, Geof´ısica e Ciˆencias Atmosf´ericas (IAG) at the Universidade de S˜ao Paulo and the Brazilian Laborat´orio Nacional de Astrofs´ıca (LNA). CUBES will provide access to a wealth of new and relevant information for stellar as well as extra-galactic sources. Principle science cases include the study of heavy elements in metal-poor stars, the direct determination of carbon, nitrogen and oxygen abundances by study of molecular bands in the UV range and the determination of the Beryllium abundance as well as the study of active galactic nuclei and the inter-galactic medium. With a streamlined modern instrument design, high efficiency dispersing elements and UV-sensitive detectors, it will enable a significant gain in sensitivity over existing ground based medium-high resolution spectrographs enabling vastly increased sample sizes accessible to the astronomical community. We present here a brief overview of the project, introducing the science cases that drive the design and discussing the design options and technological challenges.

Paper Details

Date Published: 8 July 2014
PDF: 14 pages
Proc. SPIE 9147, Ground-based and Airborne Instrumentation for Astronomy V, 914709 (8 July 2014); doi: 10.1117/12.2054751
Show Author Affiliations
Paul Bristow, European Southern Observatory (Germany)
Beatriz Barbuy, Univ. de São Paulo (Brazil)
Vanessa Bawden Macanhan, Lab. Nacional de Astrofísica (Brazil)
Bruno Castilho, Lab. Nacional de Astrofísica (Brazil)
Hans Dekker, European Southern Observatory (Germany)
Bernard Delabre, European Southern Observatory (Germany)
Marcos Diaz, Univ. de São Paulo (Brazil)
Clemens Gneiding, Lab. Nacional de Astrofísica (Brazil)
Florian Kerber, European Southern Observatory (Germany)
Harald Kuntschner, European Southern Observatory (Germany)
Giovanni La Mura, Univ. degli Studi di Padova (Italy)
Roland Reiss, European Southern Observatory (Germany)
J. Vernet, European Southern Observatory (Germany)

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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