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首页> 外文会议>Conference on Survey and Other Telescope Technologies and Discoveries; Aug 27-28, 2002; Waikoloa, Hawaii, USA >he Sloan Digital Sky Survey: Performance and Lessons Learned from the First Two Years of Operations
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he Sloan Digital Sky Survey: Performance and Lessons Learned from the First Two Years of Operations

机译：Sloan Digital Sky调查：运营的前两年的性能和经验教训

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Over a 5-year observing period, the Sloan Digital Sky Survey (SDSS) will acquire data to construct a digital 5-color photometric map of the Northern Galactic sky to about 23rd magnitude, and a correspondingly large and homogeneous spectroscopic survey. The SDSS is in a unique class of projects, in that all aspects of the SDSS infrastructure, from the telescopes and instruments, to software and operations staffing, were designed and assembled specifically to conduct this Survey. To ensure success, observing operations are run in production mode and performance metrics are used to measure progress over time. The methodology of preparing the performance baseline plan, and an assessment of Survey progress after two full years of operation, are reviewed and some lessons learned discussed. In particular, the SDSS has benefited greatly by asking peers in the field to participate in external reviews that periodically assess performance and offer independent, fresh views of potential areas of concerns. Additionally, difficulties caused by the absence of an experienced systems-engineering staff during the final phase of construction and commissioning are reviewed. The challenges of building a production machine out of complex and state-of-the-art sub-systems cannot be overstated. In the case of the SDSS, insufficient systems engineering led to problems meeting initial image quality requirements, primarily because of problems with the thermal performance of the telescope and its environment. A concerted campaign to deal with these issues was successful, but that success came rather later than we would have liked. The improvements made to address the situation, and the resulting increase in operational performance, are discussed.
机译：在5年的观察期内，Sloan数字天空调查（SDSS）将获取数据，以构建北银河天空大约23级的数字5色光度图，并进行相应的大而均匀的光谱调查。 SDSS是一类独特的项目，因为SDSS基础结构的各个方面，从望远镜和仪器到软件和操作人员，都是专门为进行此调查而设计和组装的。为了确保成功，观察操作在生产模式下运行，性能指标用于衡量一段时间内的进度。审查了绩效基准计划的编制方法，以及在运行了整整两年后对调查进度的评估，并讨论了一些经验教训。特别是，SDSS通过让该领域的同行参加定期进行绩效评估并提供有关潜在关注领域的独立，新鲜观点的外部评审而受益匪浅。此外，还审查了在施工和调试的最后阶段由于缺乏经验丰富的系统工程人员而造成的困难。用复杂的，最先进的子系统构建生产机器所面临的挑战不容小stat。在使用SDSS的情况下，系统工程不足会导致无法满足初始图像质量要求，这主要是由于望远镜及其周围环境的热性能问题所致。解决这些问题的协同运动取得了成功，但成功来得比我们期望的要晚。讨论了为解决这种情况而进行的改进以及由此带来的操作性能的提高。

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