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Atomic clock ensemble at the U.S. Naval Observatory. The U.S. Naval Observatory operates two “Master Clock” facilities, one in Washington, DC, and the other at Schriever SFB near Colorado Springs, CO. The primary facility, in Washington, D.C. maintains 57 HP/Agilent/Symmetricom 5071A-001 high performance cesium atomic clocks and 24 hydrogen ...
The Queen Anne style house in 1895; built of terracotta brick, it was unpainted until 1960. The house at One Observatory Circle was designed by architect Leon E. Dessez and built in 1893 for $20,000 (equivalent to $678,222 in 2023) for the use of the superintendent of the Naval Observatory who was the original resident.
The Vice President’s Residence at the Naval Observatory, where she and Emhoff reside in Washington, provides some respite from the well-trodden White House complex where she keeps an office, but ...
During World War II, naval personnel stationed at Point Sur, California conducted experiments with early sonar and radar systems. In 1949, while conducting research into the use of sound to detect submarines, the U.S. Naval Research Laboratory reported it was able to detect submarines at ranges of 10 to 15 nautical miles (19 to 28 km; 12 to 17 mi) using SOFAR hydrophones off Point Sur.
Docent Tim Thompson, right, gives students from USC a tour inside the 100-inch telescope at Mt. Wilson Observatory above Los Angeles. (Mel Melcon / Los Angeles Times) For the record :
The Navy Precision Optical Interferometer (NPOI) is an American astronomical interferometer, with the world's largest baselines, operated by the Naval Observatory Flagstaff Station (NOFS) in collaboration with the Naval Research Laboratory (NRL) and Lowell Observatory. The NPOI primarily produces space imagery and astrometry, the latter a major ...
Naval facilities were combined under one Naval command by The US Navy Department General Order No. 154. At the end of the war, the facilities were renamed to be US Naval Bases. [3] [4] Naval Facilities that made up Naval Operating Base Terminal Island: Roosevelt Base Terminal Island; Naval Air Base San Pedro, Reeves Field, Terminal Island (1927 ...
DSV-5, ex-NEMO (Naval Experimental Manned Observatory), was a submersible used by the United States Navy between 1970 and 1986 to oversee and observe undersea construction work. [1] NEMO had a spherical transparent acrylic hull, which gave occupants panoramic vision.