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首页> 外文会议>SPIE Conference on Ground-based and airborne instrumentation for astronomy >An EAGLE with arms: a solution to the design of the adaptive multi-IFU spectrograph EAGLE for the E-ELT
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An EAGLE with arms: a solution to the design of the adaptive multi-IFU spectrograph EAGLE for the E-ELT

机译：一只武器的鹰：一个解决方案，用于E-elt的自适应多IFU光谱仪鹰

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EAGLE is an adaptive multi-IFU spectrograph for the 42-m E-ELT. We present our design of the EAGLE Target Acquisition System (TAS) and IFU system while the spectrograph design is part of a different paper. A modified design of the arms of KMOS, a future multi-IFU spectrograph for the VLT, is used. Their shorter length permits to place more arms in EAGLE than in KMOS. An unusual difficulty in designing the optics was the need for a very high image quality in the pupil images on the deformable mirrors. The solution includes a lens in the arm more complex than in KMOS and a series of mirrors after the arm. The IFU is an Advanced Image Slicer (AIS) with an unusually large anamorphic magnification factor of 3.2. The design makes all IFU fields parallel in the telescope field wherever their positions. Both the anamorphic factor of the AIS and the position of its exit pupil were adjusted to help reduce the size and simplify the design of the spectrograph. The preceding design being our basic design, a different approach that takes advantage of the small field of the main science cases will also be discussed. In this new concept, field selectors permit to have a choice of a large number of small fields or a small number of large fields or a combination of both. Combined with the proper adaptive optics system, the throughput of EAGLE would increase by a factor of more than 2 while maintaining the same cost.
机译：Eagle是42-M e-Elt的自适应多IFU光谱仪。我们展示了我们的设计Eagle目标采集系统（TAS）和IFU系统，而光谱仪设计是不同纸张的一部分。使用了KMOS的武器的修改设计，未来的VLT的多IFU光谱仪。他们的长度较短允许在鹰中放置更多的武器而不是kmos。设计光学器件的一个不寻常的困难是需要在可变形镜子上的瞳孔图像中非常高的图像质量。该溶液包括臂中的透镜比在臂上的副词和一系列镜子中更复杂。 IFU是一个高级图像切片机（AIS），具有异常大的变形倍率为3.2的变形系数。该设计使所有IFU在望远镜领域平行的IFU田间。调整AIS的变形因子和其出口瞳的位置，以帮助减小尺寸并简化光谱仪的设计。前面的设计是我们的基本设计，还将讨论利用主要科学案例的小领域的不同方法。在这个新的概念中，场选择器允许选择大量的小字段或少量大字段或两者的组合。结合适当的自适应光学系统，Eagle的吞吐量将增加超过2的倍数，同时保持相同的成本。

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