Noon
An astrolabe is actually a navigational tool used in ancient times to determine the altitude of celestial bodies like stars and planets. It consists of a metal disc with markings to aid in measuring angles and time, used for navigation and astronomy purposes. It helped sailors and astronomers locate themselves based on the position of celestial bodies in the sky.
The astrolabe is a very ancient astronomical computer for solving problems relating to time and the position of the Sun and stars in the sky. Several types of astrolabes have been made. By far the most popular type is the planispheric astrolabe, on which the celestial sphere is projected
Traitionally, the astrolabe has many functions. It is used to locate the position of the sun, the moon, and other celestial landmarks. It is also used to determine local time and to cast horoscopes.
The astrolabe is a very ancient astronomical computer for solving problems relating to time and the position of the Sun and stars in the sky. Several types of astrolabes have been made. By far the most popular type is the planispheric astrolabe, on which the celestial sphere is projected
An astrolabe is a tool used for navigation by sailors at sea. It can be used to find one's latitude by looking at the north star, and general location. The astrolabe finds the angle between the horizon and an object being observed.
they used and Astrolabe or they would record the time and date.
An astrolabe is a historical astronomical instrument used by astronomers, navigators, and astrologers. Its many uses include locating and predicting the positions of the Sun, Moon, planets, and stars, determining local time given local latitude and vice-versa. There is often confusion between the astrolabe and the mariner's astrolabe. While the astrolabe could be useful for determining latitude on land, it was an awkward instrument for use on the heaving deck of a ship or in wind. The mariner's astrolabe was developed to address these issues. The mariner's astrolabe, also known as a sea astrolabe, was used to determine the latitude of a ship at sea by measuring the sun's noon altitude (declination) or the meridian altitude of a star of a known declination. Taken from Wikipedia
An astrolabe, an ancient navigational instrument, allowed explorers to measure the altitude of celestial bodies, helping them determine their latitude at sea. By providing a means to calculate their position relative to the stars, sailors could navigate more accurately and confidently across uncharted waters. This enhanced navigation capability facilitated longer voyages and the discovery of new lands, ultimately contributing to the Age of Exploration. Its portability and ease of use made it an essential tool for explorers of the time.
Mariam Al Astrolabe is often referred to as "the queen of the stars." This nickname reflects her expertise and significant contributions to astronomy and navigation, particularly in the context of using the astrolabe, an ancient instrument used for solving problems related to time and the position of celestial bodies. Her work highlights the important role women played in the sciences during her era.
During the Age of Discovery, sailors navigated primarily using celestial navigation, which involved observing the positions of stars, the sun, and the moon to determine their latitude. They employed tools such as the astrolabe and sextant to measure angles and reference charts like portolan maps for coastal navigation. Dead reckoning, which involved estimating one's current position based on speed, time traveled, and direction, was also commonly used. Additionally, advancements like the magnetic compass helped sailors maintain a consistent course over open waters.
so they could tell where they are and wont get lost
Sailors traditionally used a sextant to determine their position at sea. This navigational instrument measures the angle between a celestial body, such as the sun or stars, and the horizon. By knowing the time of the measurement and using celestial charts, sailors could calculate their latitude and longitude, helping them navigate accurately across the oceans.