In astronomy, sextants are devices depicting a sixth of a circle, used primarily for measuring the position of stars. There are two types of astronomical sextants, mural instruments and frame …

A sextant is a doubly reflecting navigation instrument that measures the angular distance between two visible objects. The primary use of a sextant is to measure the angle between an …

A sextant is a navigational instrument that measures the angle between two objects. It uses a pair of mirrors to overlay one object over the other. The angle between the objects is proportional …

2025年3月12日 · 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 …

2018年6月4日 · The Apollo sextant combined two separate optical devices that worked in conjunction as a functioning sextant: a 1x wide-field telescope (which was used to identify a …

An Apollo sextant and scanning telescope, from the collections of the National Air and Space Museum. The device penetrated the pressure hull of the Command Module. Photo: National …

7x35 monocular prism telescope, 6.5° field of view. Bright optics. Will fit on most all sextant models: Astra, Plath, Tamaya, and others. Of all the optional equipment for a sextant, this is …

Accompanying the sextant is a detached threaded telescope bracket with perpendicular adjustment made by a rising-piece and a milled knob. The telescope is 120 mm in length with …

sextant, instrument for measuring the altitude of the sun or another celestial body; such measurements can then be used to determine the observer's geographical position or for other …

While the sextant has been largely replaced by more sophisticated modern instruments like telescopes and electronic sensors, its impact on stellar astronomy remains significant. The …