Palomar Mountain and Observatory, San Diego County, Calif., 1939

13 photographs of Palomar Mountain and Palomar Observatory in San Diego County, California, 1939 April. These include exteriors and interiors of the observatory, roads leading to it, and views of the surrounding mountain and clouds.本数据集包含13张拍摄于1939年4月的照片，内容为加利福尼亚州圣迭戈县（San Diego County）的帕洛马山（Palomar Mountain）与帕洛马天文台（Palomar Observatory）。照片涵盖该天文台的内外景、通往该台的道路，以及周边山峦与云层景观。