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    Lantern Slide 50: Old Naval Observatory looking northeast. [Image 3 of 15]

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    Lantern Slide 50: Old Naval Observatory looking northeast.

    UNITED STATES

    02.17.2021

    Photo by Morgan Aronson 

    US Naval Observatory Library

    Lantern Slide 50: Old Naval Observatory looking northeast. The time ball* mast can be seen on top of the 9.6-inch refractor dome. *Not used at Obs. After 1884, but at old State, War, & Navy Bldg. The wing to the south (right) housed the prime vertical (lantern slide #137). It also contained a storeroom and, after 1873, office space and the 26-inch refractor. The wing also housed for a time a 6.6-inch refraction circle (1848 – 1861). Photograph about 1888. The Frodsham clock, in the Observatory lobby now, was used in the prime vertical room from about 1850 to 1882 when it was replaced by Howard clock #627. It was bought in 1848 for $420.

    IMAGE INFO

    Date Taken: 02.17.2021
    Date Posted: 02.18.2021 14:06
    Photo ID: 6524156
    VIRIN: 210217-O-OB437-731
    Resolution: 3003x2570
    Size: 663.02 KB
    Location: US

    Web Views: 26
    Downloads: 2

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