Spitzer Extragalactic First Look Survey (FLS) IRAC Ch4 Verification Field Catalog

The Extragalactic First Look Survey is composed of 4 square degrees of imaging with MIPS and IRAC centered at J1718+5930, with extensive ancillary data from ground-based optical and radio telescopes. As one of the first observations made with Spitzer after the completion of Science Verification at the end of 2003 November, the aim of this 67 hr survey was to characterize the extragalactic source populations observed with Spitzer down to sub-millijansky levels in the mid-infrared.

This dataset or service is made available by the Infrared Science Archive (IRSA) at IPAC, which is operated by the California Institute of Technology under contract with the National Aeronautics and Space Administration.

河外首次巡天（Extragalactic First Look Survey）由以J1718+5930为中心、覆盖4平方度天区的MIPS与IRAC成像数据构成，并配套大量地基光学及射电望远镜的辅助观测数据。作为2003年11月末完成科学验证后，斯皮策空间望远镜（Spitzer）开展的首批观测项目之一，这项耗时67小时的巡天计划旨在表征斯皮策在中红外波段探测到的、低至亚毫央斯基（sub-millijansky）量级的河外源群体。本数据集或服务由加州理工学院依据与美国国家航空航天局签订的运营合同管理的红外处理与分析中心（Infrared Processing and Analysis Center, IPAC）下属的红外科学档案馆（Infrared Science Archive, IRSA）提供。