(2022) CUBES : the Cassegrain U-band Efficient Spectrograph. In: SPIE Astronomical Telescopes + Instrumentation, Montréal, Québec, Canada, 17-22 Jul 2022. Published in: Proceedings of the SPIE Astronomical Telescopes + Instrumentation 2022, 12184 ISBN 9781510653498. doi:10.1117/12.2629990 ISSN 0277-786X.

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Abstract

In the era of Extremely Large Telescopes, the current generation of 8-10m facilities are likely to remain competitive at ground-UV wavelengths for the foreseeable future. The Cassegrain U-Band Efficient Spectrograph (CUBES) has been designed to provide high-efficiency (> 40%) observations in the near UV (305-400 nm requirement, 300-420 nm goal) at a spectral resolving power of R >20, 000 (with a lower-resolution, sky-limited mode of R ~7, 000). With the design focusing on maximizing the instrument throughput (ensuring a Signal to Noise Ratio (SNR) ~20 per high-resolution element at 313 nm for U ~18.5 mag objects in 1h of observations), it will offer new possibilities in many fields of astrophysics, providing access to key lines of stellar spectra: a tremendous diversity of iron-peak and heavy elements, lighter elements (in particular Beryllium) and light-element molecules (CO, CN, OH), as well as Balmer lines and the Balmer jump (particularly important for young stellar objects). The UV range is also critical in extragalactic studies: the circumgalactic medium of distant galaxies, the contribution of different types of sources to the cosmic UV background, the measurement of H2 and primordial Deuterium in a regime of relatively transparent intergalactic medium, and follow-up of explosive transients. The CUBES project completed a Phase A conceptual design in June 2021 and has now entered the detailed design and construction phase. First science operations are planned for 2028.

Item Type:	Conference Item (Paper)
Subjects:	Q Science > QB Astronomy Q Science > QC Physics
Divisions:	Faculty of Science, Engineering and Medicine > Science > Physics
Library of Congress Subject Headings (LCSH):	Very Large Telescope (Chile) , Spectrograph , Astronomical instruments, Astrophysics
Journal or Publication Title:	Proceedings of the SPIE Astronomical Telescopes + Instrumentation 2022
Publisher:	SPIE
ISBN:	9781510653498
ISSN:	0277-786X
Book Title:	Ground-based and Airborne Instrumentation for Astronomy IX
Official Date:	29 August 2022
Dates:	Date Event 29 August 2022 Published
Volume:	12184
Article Number:	121840A
DOI:	10.1117/12.2629990
Status:	Peer Reviewed
Publication Status:	Published
Reuse Statement (publisher, data, author rights):	Copyright 2022 Society of Photo‑Optical Instrumentation Engineers (SPIE). One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this publication for a fee or for commercial purposes, and modification of the contents of the publication are prohibited.
Access rights to Published version:	Restricted or Subscription Access
Copyright Holders:	Society of Photo-Optical Instrumentation Engineers (SPIE)
Date of first compliant deposit:	20 December 2022
Date of first compliant Open Access:	22 December 2022
RIOXX Funder/Project Grant:	Project/Grant ID RIOXX Funder Name Funder ID 2018/31/B/ST9/01469 Narodowym Centrum Nauki UNSPECIFIED 05A20VHA Bundesministerium für Bildung und Forschung http://dx.doi.org/10.13039/501100002347 2014/18100-4 Fundação de Amparo à Pesquisa do Estado de São Paulo UNSPECIFIED
Conference Paper Type:	Paper
Title of Event:	SPIE Astronomical Telescopes + Instrumentation
Type of Event:	Conference
Location of Event:	Montréal, Québec, Canada
Date(s) of Event:	17-22 Jul 2022
Related URLs:	Organisation

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