United States Naval Observatory

The **United States Naval Observatory** (USNO) is one of the oldest scientific agencies in the United States, with a primary mission to produce Positioning, Navigation, and Timing (PNT) for the U.S. Navy and the U.S. Department of Defense. *(cited from Wikipedia [English])*

Works (13)

Cover of Astronomical Almanac for the Year 1993

Astronomical Almanac for the Year 1993

Cover of Table of factors for reduction of transit observations, latitude +38⁰ 55' 14."1

Table of factors for reduction of transit observations, latitude +38⁰ 55' 14."1

Cover of Instruments and publications of the United States Naval Observatory

Instruments and publications of the United States Naval Observatory

Cover of Instructions for observing the transit of Venus, December 8-9, 1874

Instructions for observing the transit of Venus, December 8-9, 1874

Cover of Letter of the Secretary of the Navy, communicating in compliance with a resolution of the 19th of March last [1866] a report of Rear Admiral Charles H. Davis, Superintendent of the Naval Observatory, in relation to the various proposed lines for interoceanic canals and railroads between the waters of the Atlantic and Pacific Oceans

Letter of the Secretary of the Navy, communicating in compliance with a resolution of the 19th of March last [1866] a report of Rear Admiral Charles H. Davis, Superintendent of the Naval Observatory, in relation to the various proposed lines for interoceanic canals and railroads between the waters of the Atlantic and Pacific Oceans

Cover of Zones of stars observed at the United States Naval observatory with the mural circle in the years 1846-1847, 1848, and 1849

Zones of stars observed at the United States Naval observatory with the mural circle in the years 1846-1847, 1848, and 1849

Cover of Catalogue of stars observed at the United States Naval observatory

Catalogue of stars observed at the United States Naval observatory

Cover of Results of observations made at the United States Naval observatory with the transit instrument and mural circle in the years 1853 to 1860, inclusive

Results of observations made at the United States Naval observatory with the transit instrument and mural circle in the years 1853 to 1860, inclusive

Cover of The present status of the use of Standard Time

The present status of the use of Standard Time

Cover of Zones of stars observed at the United States Naval Observatory with the Meridian Circle in the years 1847, 1848, and 1849

Zones of stars observed at the United States Naval Observatory with the Meridian Circle in the years 1847, 1848, and 1849

Cover of Catalogue of stars observed at the United States Naval observatory during the years 1845 to 1871

Catalogue of stars observed at the United States Naval observatory during the years 1845 to 1871

Cover of Instructions for observing the total solar eclipse of July 29, 1878

Instructions for observing the total solar eclipse of July 29, 1878

Cover of Publications of the United States Naval Observatory, Second series

Publications of the United States Naval Observatory, Second series