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arXiv 2004.12499astro-ph.IM
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在VLT Coudé焦点上新的低/中分辨率光学设备摄谱仪的考虑

Considerations for a new low-/moderate-resolution optical facility spectrograph at the VLT Coudé focus

Valentin D. Ivanov, Jean-Louis Lizon

摘要:

在VLT Coude焦点进行观测可以通过组合来自多个VLT单元望远镜(UT;尽管在光训练中有一些损失)的光来增加收集面积。Coude的仪器具有显著的操作灵活性优势:它可以连接到任何可用的UT,并且“额外”仪器可以帮助更好地匹配当前条件下的观测约束。通过对现有训练的修改,它甚至可以与具有不同UT的ESTERO并行观察。在这里,我们认为一个通用的VLT Coude光纤馈低分辨率设施摄谱仪-暂时命名为卡布奇诺-适合快速跟进和微弱的瞬变特性,后期监测瞬变和快速分类条件差或在黄昏。像任何同类乐器一样,卡布奇诺可以用来解决各种科学问题。如果以现有硬件为基础,只需进行适度的改动,就可以大大降低建造成本。

英文摘要:

Observing at the VLT Coude focus can boost the collecting area by combining light from multiple VLT unit telescopes (UTs; albeit with some losses in the light train). An instrument at the Coude enjoys significant operational flexibility advantage: it can be attached to any available UT and the "extra" instrument can help to match better the observing constraints with the current conditions. With modifications to the existing train it can even observe in parallel with ESPRESSO with different UTs. Here we consider a general purpose VLT Coude fiber-fed low-resolution facility spectrograph - provisionally named Cappuccino - suitable for rapid follow up and characterization of faint transients, for late-stage monitoring of transients and for rapid classification under poor conditions or during twilight. Like any instrument of its class, Cappuccino can be used to address diverse set of science questions. The building cost can be reduced greatly if it is based - with modest changes - on existing hardware.

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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