Sproul Observatory, Swarthmore College

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Stock #: 119726
Type: Postcard
Era: Chrome
City: Swarthmore
State: Pennsylvania (PA)
County: Delaware
Publisher: Koppel Color Cards
Size: 3.5" x 5.5" (9 x 14 cm)
Additional Details:
The Refractor has a lens 61 centimeters in Diameter with a focal length of 10.9 meters. The telescope is used primarily for studies of the motions of nearby stars

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