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  2. Royal Observatory, Greenwich - Wikipedia

    en.wikipedia.org/wiki/Royal_Observatory,_Greenwich

    The Royal Observatory, Greenwich (ROG; [1] known as the Old Royal Observatory from 1957 to 1998, when the working Royal Greenwich Observatory, RGO, temporarily moved south from Greenwich to Herstmonceux) is an observatory situated on a hill in Greenwich Park in south east London, overlooking the River Thames to the north.

  3. HM Nautical Almanac Office - Wikipedia

    en.wikipedia.org/wiki/HM_Nautical_Almanac_Office

    His Majesty's Nautical Almanac Office (HMNAO), now part of the United Kingdom Hydrographic Office, was established in 1832 on the site of the Royal Observatory, Greenwich (ROG), where The Nautical Almanac had been published since 1767. HMNAO produces astronomical data for a wide range of users, such as astronomers, mariners, aviators, surveyors ...

  4. Greenwich 28-inch refractor - Wikipedia

    en.wikipedia.org/wiki/Greenwich_28-inch_refractor

    The Greenwich 28-inch refractor is a telescope at the Royal Observatory, Greenwich, where it was first installed in 1893. It is a 28-inch ( 71 cm) aperture objective lens telescope, otherwise known as a refractor , and was made by the telescope maker Sir Howard Grubb .

  5. List of largest optical telescopes in the 19th century

    en.wikipedia.org/wiki/List_of_largest_optical...

    Great Dorpat Refractor (Fraunhofer) Dorpat/Tartu Observatory: 24 cm (9.6") achromat: Dorpat, Governorate of Livonia, Russian Empire / now Tartu, Estonia: 1824 [39] [40] Van Monckhoven Telescope 23 cm refractor Ghent, Belgium, UGENT Observatory Armand Pien 1880 Sheepshanks Equatorial of Royal Greenwich Observatory [33] 17 cm (6.7") achromat

  6. Shepherd Gate Clock - Wikipedia

    en.wikipedia.org/wiki/Shepherd_Gate_Clock

    It shows Greenwich Mean Time all year round. The Shepherd Gate Clock) is mounted on the wall outside the gate of the Royal Observatory, Greenwich building in Greenwich, Greater London. The clock, an early example of an electrically connected clock system, was a sympathetic clock mechanism controlled by electric pulses transmitted by a motor ...

  7. Royal Observatory - Wikipedia

    en.wikipedia.org/wiki/Royal_Observatory

    Royal Observatory may refer to: Royal Observatory, Greenwich in England (formerly the Royal Greenwich Observatory) Paris Observatory in France ...

  8. Time ball - Wikipedia

    en.wikipedia.org/wiki/Time_ball

    Royal Observatory, Greenwich, London.Installed in 1833, a time ball sits atop the Octagon Room. A time ball or timeball is a time-signalling device. It consists of a large, painted wooden or metal ball that is dropped at a predetermined time, principally to enable navigators aboard ships offshore to verify the setting of their marine chronometers.

  9. William Richardson (astronomer) - Wikipedia

    en.wikipedia.org/wiki/William_Richardson...

    Greenwich, London (Work Place) William Richardson (2 February 1796 – 23 March 1872) was a notable British astronomer at Greenwich Observatory who was later accused of murder. [1] Richardson was an amateur scientist who had an interest in the field of astronomy and was appointed in 1822 to work as an assistant at the observatory. [1]