Tycho Brahe yıldızları gözlemek için sadece bir pusula ve bir sekstant kullanırdı - Tycho Brahe used only a compass and a sextant to observe the stars.
(Denizcilik) SEKSTANT: Esas itibarıyla, seyir subayları (Dz.) ve seyrüseferciler (Hv.) tarafından; güneşin, ayın bir yıldızın veya ufuk yukarısındaki bir gezegenin irtifa ve açısal yüksekliğini ölçmekte kullanılan alet. Tabii ufuk veya tavsiye ruhlusu ufkundan, yardımcı nokta veya yardımcı istikamet hattı olarak faydalanılabilir
a measuring instrument for measuring the angular distance between celestial objects; resembles an octant a unit of angular distance equal to 60 degrees
It is constructed on the same optical principle as Hadley's quadrant, but usually of metal, with a nicer graduation, telescopic sight, and its arc the sixth, and sometimes the third, part of a circle
> The backstaff was an early navigational instrument used to gauge latitude at sea It was replaced by a more accurate device called the octant The octant was replaced by an even more accurate instrument, the sextant, which is still being used today Note: Latitude is the distance north or south of the equator, which is measured on a map or globe in degrees along a meridian
An instrument, combining telescope and graduated quadrant, used for measuring angular distances, esp the altitude of sun, moon and stars Used at sea to determine latitude and longitude
A sextant is an instrument used for measuring angles, for example between the sun and the horizon, so that the position of a ship or aeroplane can be calculated. a tool for measuring angles between stars in order to calculate the position of a ship or aircraft (sextans , from sextus ). 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. It consists of a metal arc, marked in degrees, and a movable radial arm pivoted at the centre of the arc's circle. A telescope, mounted rigidly to the framework, is lined up with the horizon. The radial arm, on which a mirror is mounted, is moved until the star is reflected into a half-silvered mirror in line with the telescope and appears, through the telescope, to coincide with the horizon. The angular distance of the star above the horizon is then read from the graduated arc of the sextant. From this angle, the latitude can be determined (within a few hundred metres) by means of published tables, and by consulting an accurate chronometer the longitude can be established. Invented in 1731, the sextant replaced the octant and became an essential tool of navigation