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Total solar eclipse 1918
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US Naval Observatory Total Solar Eclipse Expedition 1918
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Telescopes on Cerro Tololo Chile
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360 degree panorama of the telescopes on Cerro Tololo in Chile at dawn In frame from left to right are the SMARTS 10-meter Telescope Curtis Schmid
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Night View of Maizuru Bay from the Top of Mt
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Night View of Maizuru Bay from the Top of Mt
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Washington DC June 7 1937Principal astronomer Dr Harry Burton at the United States Naval Observatory looking though the big telescope Unde
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Washington DC October 30 1935Naval Observatory chief Captain Hellweg has invented a new time calculator to instantly tell the time nearly anyw
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London United Kingdom
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US Naval Observatory dome View of the dome at the US Naval Observatorys Flagstaff Station which houses the 155 metre Kaj Strand reflecting telescop
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Paris Observatory France
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US Naval Observatory time signalling antennas
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Time Service at US Naval Observatory 1915
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15-inch equatorial telescope at US Naval Observatory This telescope is used to photograph the stars and other astronomical bodies The United States
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Transit circle observations US astronomer John Churchill Hammond (1871-1940) using the 6-inch transit circle instrument at the US Naval Observatory
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Halls discovery of the moons of Mars 1877 The original observing book notes describing the discovery of Mars satellites by US astronomer Asaph Hal
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Flamsteed House in Greenwich Park London designed by Christopher Wren on the orders of Charles II as an Observatory At this date the problem of fi
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Solar eclipse seen over the Royal Observatory Greenwich 1858 The picture viewed from the Isle of Dogs shows the Royal Naval College and River Tha
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US Naval Observatory refractor telescope 19th century This 962-inch refractor was constructed by Merz and Mahler of Munich Germany at a cost of U
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Photoheliograph 1888 This device (at centre) is a telescope that is used to photograph the Sun Photographed at the US Naval Observatory Washington
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Total solar eclipse 7 August 1869 stereoscopic card These are paired stereoscopic images which provide a 3D image (stereogram) when viewed side-by-
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Total solar eclipse 7 August 1869 stereoscopic card These are paired stereoscopic images which provide a 3D image (stereogram) when viewed side-by-
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Caesium beam atomic clocks Also known as a frequency standard these atomic clocks uses caesium to measure the exact length of one second This is a
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US Naval Observatory Washington DC USA The USNO was established in 1830 to provide astronomical timings and data for US shipping These buildings w
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USNO Great Equatorial dome This dome on Massachusetts Avenue Washington DC houses the United States Naval Observatorys (USNO) 26-inch (66 centime
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USNO Great Equatorial telescope United States Naval Observatory (USNO) 26-inch (66 centimetre) Great Equatorial refracting telescope on its original
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Spiral galaxy viewed edge on US Naval Observatory
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Old Royal Naval College Greenwich London London 2006 An aerial view of the baroque Naval College formerly the Greenwich Hospital Queens House
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USNO Great Equatorial telescope
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The Royal Observatory the Queens House and Christopher Wrens Royal Naval College Greenwich London England United Kingdom Europe Photo by Alex
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Flamsteed House in Greenwich Park London designed by Christopher Wren on the orders of Charles II as an Observatory At this date the problem of fi
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Solar eclipse seen over the Royal Observatory Greenwich 1858 The picture viewed from the Isle of Dogs shows the Royal Naval College and River Tha
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Spiral galaxy viewed edge on US Naval Observatory
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Spiral galaxy viewed edge on US Naval Observatory
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Tokyo Sky Tree the worlds tallest free-standing broadcast tower at 634 meters is glimpsed beyond the Sumida City Office and a statue of Katsu Kaish
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Tokyo Sky Tree the worlds tallest free-standing broadcast tower at 634 meters is glimpsed beyond the Sumida City Office and a statue of Katsu Kaish
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Flamsteed House in Greenwich Park London designed by Christopher Wren on the orders of Charles II as an Observatory At this date the problem of fin
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Solar eclipse seen over the Royal Observatory Greenwich 1858 The picture viewed from the Isle of Dogs shows the Royal Naval College and River Tha
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