Town of Dryden topographic map
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About this map
Name: Town of Dryden topographic map, elevation, terrain.
Location: Town of Dryden, Tompkins County, New York, United States (42.39623 -76.45407 42.55049 -76.25400)
Average elevation: 430 m
Minimum elevation: 302 m
Maximum elevation: 619 m
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Hartung-Boothroyd Observatory
United States > New York > Tompkins County > Town of Dryden > Varna
The primary 0.6m mirror was constructed from a Pyrex 1/8-scale test pouring as part of technology development for the Palomar Observatory 200-inch telescope. The mirror was polished and mounted in a lightweight tube in the late 1930s under Boothroyd's direction, but World War II deferred its planned use in a…
Average elevation: 477 m
