用于E-ELT的EAGLE仪器：自A阶段交付以来的发展
The EAGLE instrument for the E-ELT: developments since delivery of Phase A
摘要：
EAGLE仪器是一个多目标自适应光学（MOAO）馈电的多积分场摄谱仪（IFS），工作在欧洲极大望远镜（E-ELT）上的近红外（NIR）。A阶段的设计研究已提交给欧洲南方天文台（ESO），导致2009年10月成功审查。自那时以来，出现了一些事态发展，我们在此概述。在本次会议上提交的其他文件中，也对其中一些事态发展作了更详细的介绍。该仪器的科学案例虽然广泛，但特别强调：了解附近宇宙中星系的恒星星族，观察星系在红移2-5之间的快速恒星形成期间的演变，以及在红移超过7的宇宙中寻找“第一光”。在过去的两年中，在这些领域取得了实质性的进展，我们已经更新了我们的科学案例，以表明EAGLE仍然是E-ELT的重要设施。这反过来又使我们能够重新审视仪器的科学要求，确认了大多数最初的决定，但有一个修改。该仪器（重力不变焦点站）的原始位置已不在E-ELT建设建议中，因此我们进行了一些初步分析，以表明该仪器可以简单地适应E-ELT Nasmyth平台的工作。自A阶段文件提交以来，MOAO已经在威廉赫歇尔望远镜的CANARY实验中进行了天空演示。
英文摘要：
The EAGLE instrument is a Multi-Object Adaptive Optics (MOAO) fed, multiple Integral Field Spectrograph (IFS), working in the Near Infra-Red (NIR), on the European Extremely Large Telescope (E-ELT). A Phase A design study was delivered to the European Southern Observatory (ESO) leading to a successful review in October 2009. Since that time there have been a number of developments, which we summarize here. Some of these developments are also described in more detail in other submissions at this meeting. The science case for the instrument, while broad, highlighted in particular: understanding the stellar populations of galaxies in the nearby universe, the observation of the evolution of galaxies during the period of rapid stellar build-up between redshifts of 2-5, and the search for 'first light' in the universe at redshifts beyond 7. In the last 2 years substantial progress has been made in these areas, and we have updated our science case to show that EAGLE is still an essential facility for the E-ELT. This in turn allowed us to revisit the science requirements for the instrument, confirming most of the original decisions, but with one modification. The original location considered for the instrument (a gravity invariant focal station) is no longer in the E-ELT Construction Proposal, and so we have performed some preliminary analyses to show that the instrument can be simply adapted to work at the E-ELT Nasmyth platform. Since the delivery of the Phase A documentation, MOAO has been demonstrated on-sky by the CANARY experiment at the William Herschel Telescope.
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