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arXiv 2412.03460astro-ph.IM
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CUBES,卡塞格林U波段高效光谱仪:迈向最终设计评审

CUBES, the Cassegrain U-Band Efficient Spectrograph: towards final design review

Matteo Genoni, Hans Dekker, Stefano Covino, Roberto Cirami, Marcello Agostino Scalera, Lawrence Bissel, Walter Seifert, Ariadna Calcines, Gerardo Avila, Julian … 展开作者

Matteo Genoni, Hans Dekker, Stefano Covino, Roberto Cirami, Marcello Agostino Scalera, Lawrence Bissel, Walter Seifert, Ariadna Calcines, Gerardo Avila, Julian Stuermer, Christopher Ritz, David Lunney, Chris Miller, Stephen Watson, Chris Waring, Bruno Vaz Castilho, Marcio De Arruda, Orlando Verducci, Igor Coretti, Luca Oggioni, Giorgio Pariani, Edoardo Alberto Maria Redaelli, Matteo D'Ambrogio, Giorgio Calderone, Matteo Porru, Ingo Stilz, Rodolfo Smiljanic, Guido Cupani, Mariagrazia Franchini, Andrea Scaudo, Vincent Geers, Vincenzo De Caprio, Domenico D' Auria, Mina Sibalic, Cyrielle Opitom, Gabriele Cescutti, Valentina D' Odorico, Ruben Sanchez Janssen, Andreas Quirrenbach, Beatriz Barbuy, Stefano Cristiani, Paolo Di Marcantonio

AI总结:

本文介绍面向VLT的近紫外高分辨高吞吐量光谱仪CUBES的C阶段设计、子系统架构、AFC等关键功能及安装运行计划。

摘要:

在极大望远镜时代,当前一代8–10米级设备在可预见的未来很可能仍会在地面紫外波段保持竞争力。Cassegrain U-Band Efficient Spectrograph(卡塞格林U波段高效光谱仪,CUBES)旨在近紫外波段(要求305–400 nm,目标300–420 nm)提供高仪器效率(>37%)观测,光谱分辨本领为R>20,000,并配备R约7,000的较低分辨率、天光受限模式。该设计聚焦于最大化仪器吞吐量(确保对U约17.5等的目标观测1小时,在313 nm处每个光谱分辨率元获得约20的信噪比,即SNR),将为多个天体物理学领域提供新的可能:i)获取恒星光谱中的关键谱线(例如较轻元素,尤其是铍);河外研究(例如遥远星系的星系周介质、宇宙紫外背景);以及爆发性瞬变源的后续观测。我们介绍目前处于C阶段并即将进入最终设计评审的CUBES仪器设计,概述硬件架构、不同子系统之间的接口以及相关技术要求。我们描述各子系统的光学、机械和电气设计(从望远镜适配器和支撑结构,到主要光机路径,包括定标单元、探测器装置和低温恒温器控制、主控制电子学),并详细说明Active Flexure Compensation(主动像差补偿,AFC)等特有的仪器功能。此外,我们概述AITV概念和主要仪器运行方式,并总览其软件生态系统。该仪器计划于2028–2029年安装在VLT上,并于2029年末开始首次科学运行。

英文摘要:

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 instrumental efficiency ( $>$ 37\%) 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 $\sim$ 7, 000). With the design focusing on maximizing the instrument throughput (ensuring a Signal to Noise Ratio -SNR- $\sim$ 20 per spectral resolution element at 313 nm for U $\sim$ 17.5 mag objects in 1h of observations), it will offer new possibilities in many fields of astrophysics: i) access to key lines of stellar spectra (e.g. lighter elements, in particular Beryllium), extragalactic studies (e.g. circumgalactic medium of distant galaxies, cosmic UV background) and follow-up of explosive transients. We present the CUBES instrument design, currently in Phase-C and approaching the final design review, summarizing the hardware architecture and interfaces between the different subsystems as well as the relevant technical requirements. We describe the optical, mechanical, electrical design of the different subsystems (from the telescope adapter and support structure, through the main opto-mechanical path, including calibration unit, detector devices and cryostat control, main control electronics), detailing peculiar instrument functions like the Active Flexure Compensation (AFC). Furthermore, we outline the AITV concept and the main instrument operations giving an overview of its software ecosystem. Installation at the VLT is planned for 2028-2029 and first science operations in late 2029.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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