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A diagram of a typical nautical sextant, a tool used in celestial navigation to measure the angle between two objects viewed by means of its optical sight. Celestial navigation, also known as astronavigation, is the practice of position fixing using stars and other celestial bodies that enables a navigator to accurately determine their actual current physical position in space or on the ...
These stars are typically used in two ways by the navigator. The first is to obtain a line of position by use of a sextant observation and the techniques of celestial navigation. [4] Multiple lines of position can be intersected to obtain a position known as a celestial fix.
Celestial Navigations was an American music and story-telling group, connected to the Church of Scientology, with members Geoffrey Lewis, Geoff Levin, David Campbell, Eric Zimmerman, Bettie Ross, and Chris Many. [1] [2] [3] Their performances consisted of Lewis telling a story along with electronic music to enhance the story.
Two sample pages of the 2002 Nautical Almanac published by the U.S. Naval Observatory. A nautical almanac is a publication describing the positions of a selection of celestial bodies for the purpose of enabling navigators to use celestial navigation to determine the position of their ship while at sea.
Celestial navigation is a position fixing technique that was devised to help sailors cross the featureless oceans without having to rely on dead reckoning to enable them to strike land. Celestial navigation uses angular measurements (sights) between the horizon and a common celestial object. The Sun is most often measured.
Meridian altitude is the simplest calculation of celestial navigation. An observer determines their latitude by measuring the altitude of an astronomical object at the time of its meridian transit. A meridian is the imaginary plane running north–south and through the zenith, nadir, and celestial poles.
A navigator U.S. Navy personnel practice using a sextant as part of a celestial navigation training, 2018. A navigator is the person on board a ship or aircraft responsible for its navigation. [1] The navigator's primary responsibility is to be aware of ship or aircraft position at all times.
Written records of navigation using stars, or celestial navigation, go back to Homer's Odyssey where Calypso tells Odysseus to keep the Bear (Ursa Major) on his left hand side and at the same time to observe the position of the Pleiades, the late-setting Boötes and the Orion as he sailed eastward from her island Ogygia traversing the Ocean. [5]