论文标题
Tardys：使用R6 Echelle光栅设计和原型
TARdYS: Design and Prototype of an Exoplanet Hunter for TAO using a R6 Echelle Grating
论文作者
论文摘要
表征系外行星候选者的一个局限性是红外高分辨率光谱仪的可用性。高精度红外光谱仪缺乏的重要因素是这些仪器的高成本。我们提出了一种新的光学设计，该设计导致了一种具有成本效益的解决方案。我们的仪器是带有R6梯形光栅和图像切片机的高分辨率（R = 60,000）红外光谱仪。我们比较了准线和白人瞳孔设置的最佳性能，并且更喜欢后者，因为它可以达到更高的图像质量。该工具是为东京阿塔卡马大学天文台（TAO）的6.5 m望远镜提出的。 TAO AIUC高分辨率（D）Y带光谱仪（Tardys）覆盖0.843-1.117 UM。为了降低成本，我们用半晶溶液将42个光谱阶挤压到1K检测器上。即使考虑了现实的制造和对齐公差以及对热变化的考虑，我们也获得了出色的分辨率。在本文中，我们在环境温度下介绍了该光谱仪的原型的早期结果。
One limitation in characterizing exoplanet candidates is the availability of infrared, high-resolution spectrographs. An important factor in the scarcity of high precision IR spectrographs is the high cost of these instruments. We present a new optical design, which leads to a cost-effective solution. Our instrument is a high-resolution (R=60,000) infrared spectrograph with a R6 Echelle grating and an image slicer. We compare the best possible performance of quasi-Littrow and White Pupil setups, and prefer the latter because it achieves higher image quality. The instrument is proposed for the University of Tokyo Atacama Observatory (TAO) 6.5 m telescope in Chile. The Tao Aiuc high Resolution (d) Y band Spectrograph (TARdYS) covers 0.843-1.117 um. To reduce the cost, we squeeze 42 spectral orders onto a 1K detector with a semi-cryogenic solution. We obtain excellent resolution even when taking realistic manufacturing and alignment tolerances as well as thermal variations into account. In this paper, we present early results from the prototype of this spectrograph at ambient temperature.
