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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 astronomical object and the horizon for the purposes of celestial navigation . The estimation of this angle, the altitude, is known as sighting or shooting the ...
Sextant (astronomy) 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-based instruments. They are of significant historical importance, but have been replaced over time by transit telescopes, other ...
Octant (instrument) Octant. This instrument, labelled Crichton - London, Sold by J Berry, Aberdeen, appears to have an ebony frame with ivory scale, vernier and signature plate. The index arm and mirror supports are brass. Rather than use a sighting telescope, this instrument has a sighting pinnula.
A diagram of a typical nautical sextant, a tool used in celestial navigation to measure the angle between two objects viewed by means of its optical sight. Celestial navigation, also known as astronavigation, is the practice of position fixing using stars and other celestial bodies that enables a navigator to accurately determine their actual current physical position in space or on the ...
Bridgeville, California (population 25) was the first town to be sold on eBay in 2002, and has been up for sale three times since. [1] In January 2003, Thatch Cay, the last privately held and undeveloped U.S. Virgin Island, was listed for auction by Idealight International. The minimum bid was US$3 million and the sale closed January 16, 2003.
The 11 most coveted items from the celebrity auction setting EBay on fire. Los Angeles Times Staff. September 14, 2023 at 3:13 PM. Ann Dowd, from left, Lamorne Morris and John Lithgow.
Mk VIII Bubble sextant in use on a Short Sunderland. Isaac Newton developed the quadrant. The octant was a further improvement. It could measure altitudes of up to 90° above the horizon. The first bubble instruments, which were developed by Gago Coutinho, were bubble sextants that copied the features of an ordinary sextant.
Sextant is the eleventh studio album by Herbie Hancock, released in 1973 by Columbia. It is the last album with the Mwandishi-era sextet featuring saxophonist Bennie Maupin , trumpeter Eddie Henderson , trombonist Julian Priester , bassist Buster Williams and drummer Billy Hart .
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