Legacy Survey of Space and Time Data Preview 1: dia_source dataset type

The Legacy Survey of Space and Time Data Preview 1 (DP1) is the first release of data from the NSF-DOE Vera C. Rubin Observatory. It consists of raw and calibrated single-epoch images, co-adds, difference images, detection catalogs, and other derived data products. DP1 is based on 1792 science-grade optical/near-infrared exposures acquired over 48 distinct nights by the Rubin Commissioning Camera, LSSTComCam, on the Simonyi Survey Telescope at the Summit Facility on Cerro Pachón, Chile during the first on-sky commissioning campaign in late 2024. DP1 covers a total of approximately 15 sq. deg. over seven roughly equally-sized non-contiguous fields, each independently observed in six broad photometric bands, ugrizy, spanning a range of stellar densities and latitudes and overlapping with external reference datasets.

This dataset is a subset of the full data release consisting of the dia_source dataset type. These are measurements for detected sources in difference images. This release contains 25 datasets of this type.

时空遗产巡天数据预览版1（DP1）是美国国家科学基金会与美国能源部（NSF-DOE）联合支持的薇拉·C·鲁宾天文台（Vera C. Rubin Observatory）的首批公开数据发布成果。该数据集包含原始及校准后的单历元图像、堆叠图像（co-adds）、差分图像、源探测星表及其他衍生数据产品。DP1的数据来源于2024年末首次天空调试观测项目期间，搭载于智利帕琼山山顶观测设施西莫尼巡天望远镜的鲁宾调试相机（LSSTComCam），在48个独立观测夜采集的1792帧科学级光学/近红外曝光数据。DP1总覆盖范围约15平方度，分布于7个规模大致均等的非连续天区，每个天区均通过ugrizy六组宽波段测光滤镜独立观测，涵盖不同恒星密度与银河纬度的区域，且与外部参考数据集存在重叠覆盖。
本数据集为完整数据发布的子集，属于dia_source（差分图像源）数据集类型，对应差分图像中已探测源的测光测量结果。本次发布共包含25个该类型数据集。