AZIMUTH AND ALTITUDE INSTRUMENT Meaning and
Definition
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An azimuth and altitude instrument is a specialized tool used in the field of celestial navigation and astronomy to measure the azimuth and altitude of celestial bodies such as stars, planets, and the sun.
The term "azimuth" refers to the angular distance in a horizontal plane measured clockwise from the true north or south. It provides a directional reference for celestial bodies, indicating their position along the horizon. The azimuth is typically measured in degrees, with 0 degrees indicating north, 90 degrees indicating east, 180 degrees indicating south, and 270 degrees indicating west.
The "altitude" of a celestial body refers to its angular distance above the observer's horizon. It provides information about the vertical position of the body, specifically the angle at which it is elevated in relation to the observer. The altitude is measured in degrees, with 0 degrees indicating the horizon and 90 degrees indicating the zenith (directly overhead).
An azimuth and altitude instrument combines a variety of components to facilitate accurate measurements of azimuth and altitude. This typically includes a graduated circle or scale, a sighting mechanism such as a telescope or sighting tube, and various adjustments for leveling and calibrating the instrument. By aligning the instrument with a celestial body and reading the values on the azimuth and altitude scales, navigators and astronomers can determine the precise location of celestial bodies in the sky. This information is crucial for celestial navigation, astrological calculations, and various scientific observations and studies.
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