Deep near-infrared (NIR) J- and K-band photometry of three Local Group dwarf spheroidal galaxies—Fornax, Carina, and Sculptor—is made available for the community. Until now, these data have only been used by the Araucaria Project to determine distances using the tip of the red giant branch and RR Lyrae stars. Now, we present the entire data collection in the form of a database, consisting of accurate J- and K-band magnitudes, sky coordinates, ellipticity measurements, and timestamps of observations, complemented by stars’ loci in their reference images. The depth of our photometry reaches about 22 mag at the 5σ level, and is comparable to NIR surveys, such as the UKIRT Infrared Deep Sky Survey (UKIDSS) or the VISTA Hemisphere Survey (VHS). Small overlap with VHS and no overlap with UKIDSS makes our database a unique source of quality photometry.

三个本地群矮椭球星系——天炉座、船底座和雕刻家——的深近红外 (NIR) J和K波段光度测量可供社区使用。到目前为止，这些数据仅被南洋杉项目用于使用红巨星分支的尖端和天琴座 RR 恒星确定距离。现在，我们以数据库的形式呈现整个数据集，包括精确的J波段和K波段星等、天空坐标、椭圆度测量值和观测时间戳，并辅以参考图像中的恒星轨迹。我们的测光深度在 5 σ处达到约 22 mag水平，可与 NIR 调查相媲美，例如 UKIRT 红外深空调查 (UKIDSS) 或 VISTA 半球调查 (VHS)。与 VHS 的小重叠和与 UKIDSS 没有重叠使我们的数据库成为高质量光度测量的独特来源。