Modeling the transmission and thermal emission in a pupil image behind the Keck II adaptive optics system
Modeling the transmission and thermal emission in a pupil image behind the Keck II adaptive optics system
复制标题
对 Keck II 自适应光学系统后面的光瞳图像中的透射和热发射进行建模
DOI：
10.1117/12.2233068
复制
发表时间：
2016
期刊：
影响因子：
--
通讯作者：
K. Matthews
中科院分区：
文献类型：
--
作者：
P. Arriaga;M. Fitzgerald;J. Lyke;R. Campbell;P. Wizinowich;S. Adkins;K. Matthews
天文仪器的设计和性能主要取决于系统的总吞吐量以及来自天空和仪器源的背景发射。在设计用于背景受限成像的光瞳光阑时，人们寻求平衡吞吐量和背景抑制以优化测量信噪比。凯克天文台的自适应光学系统后面的红外成像中，许多源影响传输和发射，如望远镜段，段间隙，二级支撑结构，和AO工作台光学。在这里，我们描述了一个实验，使用NIRC 2的光瞳观察模式，作为波长的函数成像的光瞳平面。我们正在开发一个经验模型的吞吐量和背景发射的光瞳平面中的位置的函数。该模型将部分用于通知未来仪器中冷瞳孔的最佳设计，例如OSIRIS的新成像相机。
The design and performance of astronomical instruments depend critically on the total system throughput as well as the background emission from the sky and instrumental sources. In designing a pupil stop for background- limited imaging, one seeks to balance throughput and background rejection to optimize measurement signal-to-noise ratios. Many sources affect transmission and emission in infrared imaging behind the Keck Observatory’s adaptive optics systems, such as telescope segments, segment gaps, secondary support structure, and AO bench optics. Here we describe an experiment, using the pupil-viewing mode of NIRC2, to image the pupil plane as a function of wavelength. We are developing an empirical model of throughput and background emission as a function of position in the pupil plane. This model will be used in part to inform the optimal design of cold pupils in future instruments, such as the new imaging camera for OSIRIS.