北天帽的光学-紫外-红外巡天：I。目录
An Optical-UV-IR Survey of the North Celestial Cap: I. The Catalogue
摘要：
本文介绍了北天帽巡天（NCC Survey，NCCS）的最终成果--北天极10度以内的光学-紫外-红外合并星表。DEC > 80度的NCC区域在现代CCD调查中覆盖不足。巡天的光学部分由WISE天文台的望远镜在V、R和I波段观测，并与GALEX紫外和WISE红外数据合并，产生了星表。在至少一个光学波段观测到400多万个物体。最终的目录包含在所有三个光学波段观测到的约160万个源，其中约140万个有WISE对应源，约30万个有GALEX对应源。与UCAC 3星表比较，光学NCCS数据的天体测量精度优于0.2角秒，与SDSS比较，光度测量精度优于~0.15等，其光源亮度大于V = 20.3，R = 21.0，I = 19.2等。
英文摘要：
We describe the final product of the North Celestial Cap Survey (NCC Survey, NCCS) - the optical-UV-IR merged catalogue for the region within 10 deg of the North Celestial Pole. The NCC region at DEC > 80 deg is poorly covered by modern CCD-based surveys. The optical part of the survey was observed in V, R and I with the Wise Observatory telescopes and was merged with GALEX UV and WISE IR data, producing the catalogue. More than four million objects were observed in at least one optical band. The final catalogue contains ~1.6 million sources observed in all three optical bands, of which some 1.4 million have WISE counterparts and ~300,000 have GALEX counterparts. The astrometric accuracy of the optical NCCS data, derived from a comparison with the UCAC3 catalogue, is better than 0.2 arcsec and the photometry, when compared with SDSS, is good to ~0.15 mag for sources brighter than V = 20.3, R = 21.0 and I = 19.2 mag. The SDSS point-extended source separation is reproduced with >92% efficiency.
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