Simulating the LSST system
Simulating the LSST system
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模拟 LSST 系统
DOI：
10.1117/12.857819
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发表时间：
2010
期刊：
影响因子：
--
通讯作者：
M. Young
中科院分区：
文献类型：
--
作者：
A. Connolly;J. Peterson;J. Jernigan;Robert Abel;J. Bankert;Chihway L. Chang;C. Claver;R. Gibson;D. Gilmore;E. Grace;R. L. Jones;Ž. Ivezić;J. Jee;M. Jurić;S. Kahn;V. Krabbendam;S. Krughoff;S. Lorenz;J. Pizagno;A. Rasmussen;N. Todd;J. Tyson;M. Young
从LSST数据流中提取科学需要详细了解LSST目录和图像的属性（从它们的探测极限到校准的准确性，再到如何描述星系形状）。这些特性将取决于LSST的许多组成部分，包括望远镜的设计、获取数据的条件和总体调查策略。为了了解这些组件如何影响LSST数据的性质，模拟小组正在开发一个高保真模拟框架，该框架可扩展到LSST预期的数据量。该框架包括星系，恒星和太阳系目录，旨在匹配LSST的深度和属性（r=28），瞬态和移动源，以及图像模拟，光线跟踪光子从大气层上方通过光学系统和相机。我们在这里描述的状态，目前的模拟框架和计算的挑战。
Extracting science from the LSST data stream requires a detailed knowledge of the properties of the LSST catalogs and images (from their detection limits to the accuracy of the calibration to how well galaxy shapes can be characterized). These properties will depend on many of the LSST components including the design of the telescope, the conditions under which the data are taken and the overall survey strategy. To understand how these components impact the nature of the LSST data the simulations group is developing a framework for high fidelity simulations that scale to the volume of data expected from the LSST. This framework comprises galaxy, stellar and solar system catalogs designed to match the depths and properties of the LSST (to r=28), transient and moving sources, and image simulations that ray-trace the photons from above the atmosphere through the optics and to the camera. We describe here the state of the current simulation framework and its computational challenges.