CUBES: the Cassegrain U-band Efficient Spectrograph

S. Cristiani; J. M. Alcalá; S. H. P. Alencar; S. Balashev; N. Bastian; B. Barbuy; U. Battino; A. Calcines; G. Calderone; P. Cambianica; R. Carini; B. Carter; S. Cassisi; B. Castilho; G. Cescutti; N. Christlieb; R. Cirami; I. Coretti; R. J. Cooke; S. Covino; G. Cremonese; K. Cunha; G. Cupani; A. da Silva; V. De Caprio; A. De Cia; H. Dekker; V. D'Elia; G. de Silva; M. P. Diaz; P. Di Marcantonio; D. D'Auria; V. D'Odorico; A. Fitzsimmons; H. Ernandes; C. Evans; M. Franchini; M. Genoni; B. Gänsicke; R. E. Giribaldi; C. Gneiding; A. Grazian; C. J. Hansen; F. La Forgia; M. Landoni; M. Lazzarin; D. Lunney; W. J. Maciel; W. Marcolino; M. Marconi; A. Migliorini; C. Miller; P. Noterdaeme; C. Opitom; G. Pariani; B. Pilecki; S. Piranomonte; A. Quirrenbach; E. M. A. Redaelli; C. Pereira; S. Randich; S. Rossi; R. Sanchez-Janssen; W. Seifert; R. Smiljanic; C. Snodgrass; I. Stilz; J. Stürmer; E. Vanzella; P. Ventura; O. Verducci; C. Waring; S. Watson; M. Wells; D. Wright; T. Zafar; A. Zanutta

doi:10.1117/12.2629990

29 August 2022 CUBES: the Cassegrain U-band Efficient Spectrograph

S. Cristiani, J. M. Alcalá, S. H. P. Alencar, S. Balashev, N. Bastian, B. Barbuy, U. Battino, A. Calcines , G. Calderone, P. Cambianica, R. Carini, B. Carter, S. Cassisi, B. Castilho, G. Cescutti, N. Christlieb, R. Cirami, I. Coretti, R. J. Cooke, S. Covino, G. Cremonese, K. Cunha, G. Cupani, A. da Silva, V. De Caprio, A. De Cia, H. Dekker, V. D'Elia, G. de Silva, M. P. Diaz, P. Di Marcantonio, D. D'Auria, V. D'Odorico, A. Fitzsimmons, H. Ernandes, C. Evans, M. Franchini, M. Genoni, B. Gänsicke, R. E. Giribaldi, C. Gneiding, A. Grazian, C. J. Hansen, F. La Forgia, M. Landoni, M. Lazzarin, D. Lunney, W. J. Maciel, W. Marcolino, M. Marconi, A. Migliorini, C. Miller, P. Noterdaeme, C. Opitom, G. Pariani, B. Pilecki, S. Piranomonte, A. Quirrenbach, E. M. A. Redaelli, C. Pereira, S. Randich, S. Rossi, R. Sanchez-Janssen, W. Seifert, R. Smiljanic, C. Snodgrass, I. Stilz, J. Stürmer, E. Vanzella, P. Ventura, O. Verducci, C. Waring, S. Watson, M. Wells, D. Wright, T. Zafar, A. Zanutta

Author Affiliations +

Proceedings Volume 12184, Ground-based and Airborne Instrumentation for Astronomy IX; 121840A (2022) https://doi.org/10.1117/12.2629990
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada

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.

Conference Presentation

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S. Cristiani, J. M. Alcalá, S. H. P. Alencar, S. Balashev, N. Bastian, B. Barbuy, U. Battino, A. Calcines , G. Calderone, P. Cambianica, R. Carini, B. Carter, S. Cassisi, B. Castilho, G. Cescutti, N. Christlieb, R. Cirami, I. Coretti, R. J. Cooke, S. Covino, G. Cremonese, K. Cunha, G. Cupani, A. da Silva, V. De Caprio, A. De Cia, H. Dekker, V. D'Elia, G. de Silva, M. P. Diaz, P. Di Marcantonio, D. D'Auria, V. D'Odorico, A. Fitzsimmons, H. Ernandes, C. Evans, M. Franchini, M. Genoni, B. Gänsicke, R. E. Giribaldi, C. Gneiding, A. Grazian, C. J. Hansen, F. La Forgia, M. Landoni, M. Lazzarin, D. Lunney, W. J. Maciel, W. Marcolino, M. Marconi, A. Migliorini, C. Miller, P. Noterdaeme, C. Opitom, G. Pariani, B. Pilecki, S. Piranomonte, A. Quirrenbach, E. M. A. Redaelli, C. Pereira, S. Randich, S. Rossi, R. Sanchez-Janssen, W. Seifert, R. Smiljanic, C. Snodgrass, I. Stilz, J. Stürmer, E. Vanzella, P. Ventura, O. Verducci, C. Waring, S. Watson, M. Wells, D. Wright, T. Zafar, and A. Zanutta "CUBES: the Cassegrain U-band Efficient Spectrograph", Proc. SPIE 12184, Ground-based and Airborne Instrumentation for Astronomy IX, 121840A (29 August 2022); https://doi.org/10.1117/12.2629990

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