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Geographic Information
- Los Angeles County, California, United States6
- Nantucket, Nantucket County, Massachusetts, United States6
- Lick Observatory, Santa Clara County, California, United States5
- San Diego County, California, United States4
- Royal Greenwich Observatory, London, England, United Kingdom3
- Victoria, British Columbia, Canada3
- Williams Bay, Walworth County, Wisconsin, United States3
- Cambridge, Middlesex County, Massachusetts, United States2
- France2
- Grand Canyon National Park, Arizona, United States2
- Jena, Germany2
- Rome, Italy2
- Williamstown, Berkshire County, Massachusetts, United States2
- Barcelona, Spain1
- Bonn, Germany1
- Cambridge, England, United Kingdom1
- Coppenhagen, Denmark1
- Delaware, Delaware County, Ohio, United States1
- Denmark1
- Flagstaff, Coconino County, Arizona, United States1