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A sextant is a doubly reflecting navigation instrument that measures the angular distance between two visible objects It works by aligning the index mirror with the celestial body and reflecting its image onto the horizon mirror. The primary use of a sextant is to measure the angle between an astronomical object and the horizon for the purposes of celestial navigation.
Sextant - Wikipedia
A sextant is a navigational instrument that measures the angle between two objects A sextant is a navigation instrument used to measure the angles between celestial bodies and the horizon It uses a pair of mirrors to overlay one object over the other
The angle between the objects is proportional to the angle between the mirrors, so you can read it directly from the arc of the sextant.
Sextant, instrument for determining the angle between the horizon and a celestial body such as the sun, the moon, or a star, used in celestial navigation to determine latitude and longitude. The meaning of sextant is an instrument for measuring angular distances used especially in navigation to observe altitudes of celestial bodies (as in ascertaining latitude and longitude). A sextant is an old navigational tool that measures elevation using angular distances You can use a sextant to determine the altitude in the sky of the sun, moon, or other celestial bodies relative to the horizon.
Sextant (plural sextants) (nautical) a navigational device for deriving angular distances between objects so as to determine latitude and longitude A sextant is a navigational instrument used to measure the angle between two visible objects Most commonly, it measures the angle between a celestial body (such as the sun, moon, or stars) and the horizon. Build a simple sextant (teacher’s version) background
A sextant is a tool for measuring the angular altitude of a star above the horizon
Primarily, they have been used for navigation However, the predecessor of the sextant is the astrolabe, which was used up to the end of the 18thcentury. Interactive exercises are included, ranging from simulated sextant observations to drawing the line of position on your map.
