论文标题
部分可观测时空混沌系统的无模型预测
GPI 2.0: Optical Designs for the Upgrade of the Gemini Planet Imager Coronagraphic system
论文作者
论文摘要
Gemini Planet Imager（GPI）是一种积分场光谱仪（IFS）和Coronagraph，它是为少数用于对替代伴侣进行高对比度直接成像的当前一代仪器之一。该乐器正在升级并从智利Cerro Pachon的Gemini South天文台上的当前坐骑升级并移动到Mauna Kea上的双胞胎天文台，Gemini North（该过程通俗地称为“ GPI 2.0”）。我们介绍了针对GPI 2.0部分开发的设计，这些设计与升级GPI Coronagraphic系统的各种光学组件有关。更具体地说，我们为Apodizer和Lyot Stop（LS）提供了新的设计，这些设计在黑暗区域的内部工作角度以及改进的核心吞吐量上实现了更好的原始对比度，同时保持了与LS不对对准的鲁棒性相似的稳健性。 To generate these upgraded designs, we use our own publicly available software package called APLC-Optimization that combines a commercial linear solver (Gurobi) with a high contrast imaging simulation package (HCIPy) in order to iteratively propagate light through a simulated model of an apodized phase lyot coronagraph (APLC), optimizing for the best coronagraph performance metrics.这些设计最近已由商业制造商在印刷文字上打印，并在2023年GPI 2.0变成天空时可以使用。
The Gemini Planet Imager (GPI) is an integral field spectrograph (IFS) and coronagraph that is one of the few current generation instruments optimized for high-contrast direct imaging of substellar companions. The instrument is in the process of being upgraded and moved from its current mount on the Gemini South Observatory in Cerro Pachon, Chile, to its twin observatory, Gemini North, on Mauna Kea (a process colloquially dubbed 'GPI 2.0'). We present the designs that have been developed for the part of GPI 2.0 that pertains to upgrading various optical components of the GPI coronagraphic system. More specifically, we present new designs for the apodizer and Lyot stop (LS) that achieve better raw contrast at the inner working angle of the dark zone as well as improved core throughput while retaining a similar level of robustness to LS misalignment. To generate these upgraded designs, we use our own publicly available software package called APLC-Optimization that combines a commercial linear solver (Gurobi) with a high contrast imaging simulation package (HCIPy) in order to iteratively propagate light through a simulated model of an apodized phase lyot coronagraph (APLC), optimizing for the best coronagraph performance metrics. The designs have recently finished being lithographically printed by a commercial manufacturer and will be ready for use when GPI 2.0 goes on-sky in 2023.
