Astrometric Research at Yale University Observatory

有了这笔资金，再加上耶鲁南方天文台公司的一笔资助。Van Altena博士将继续测量和分析在阿根廷埃尔莱昂西托的耶鲁南方天文台为南方固有运动（SPM）项目获得的摄影底片。相对于昏暗的星系，将测量每场大约1000颗恒星的位置和绝对固有运动。一个新的耶鲁区域星表将会启动，它将提供一个低至18等的次级标准网络。SPM固有运动的主要用途是研究星系结构，而耶鲁区域目录将提供微弱的标准，用于确定大型反射望远镜在非常小的范围内的物体坐标。

With this and a companion grant to the Yale Southern Observatory, Inc. Dr. Van Altena will continue with the measurement and analysis of the photographic plates obtained for the Southern Proper Motion (SPM) program at the Yale Southern Observatory at El Leoncito, Argentina. The positions and absolute proper motions of approximately 1000 stars per field will be measured with respect to faint galaxies. A new Yale Zone Catalog of faint star coordinates will be initiated which will provide a network of secondary standards down to the 18th magnitude. The primary use of the SPM proper motions is for research on galactic structure, while the Yale Zone Catalog will provide faint standards for use in determining the coordinates of objects in the very small fields of large reflector telescopes.