contemporary astronomy, 88 constellations are recognized by the International Astronomical Union (IAU). Each constellation is a region of the sky bordered...

the astronomical sextant, an instrument that Hevelius made frequent use of in his observations. Sextans is a medium sized constellation bordering Leo to...

Look up sextant in Wiktionary, the free dictionary. Sextant may refer to: Sextant (circle), a circular sector equal to one sixth of a circle, or a third...

Former constellations are old historical Western constellations that for various reasons are no longer widely recognised or are not officially recognised...

The Lockheed Constellation ("Connie") was a propeller-driven airliner powered by four 18-cylinder radial Wright R-3350 engines. It was built by Lockheed...

with a second hand or digit, an almanac with lunar corrections, and a sextant are used. With no knowledge of time at all, a lunar calculation (given...

combination of a number and constellation name that uniquely identifies most naked eye stars in the modern constellations visible from southern England...

period (Sanchir) with a sextant of 40 meters radius. Mongolians are particularly attached to the Great Bear. This constellation is limited for them to...

in creating the star catalogue. It provides examples of the use of the sextant and quadrant by Hevelius, in tandem with known positions of the sun, in...

in the Northern Hemisphere by sighting the pole star (Polaris) with a sextant and using sight reduction tables to correct for height of eye and atmospheric...

In essence (in Western astronomical terms), a nakshatra simply is a constellation. Every nakshatra is divided into four padas (lit. "steps") related to...

directly. A mural sextant was constructed in Ray, Iran, by Abu-Mahmud al-Khujandi in 994. Ulugh Beg constructed the "Fakhri Sextant" in Samarkand that...

conditions, these selected stars are among the brightest and span 38 constellations of the celestial sphere from the declination of −70° to +89°. Many of...

sexdactyly have six fingers on each hand The measuring instrument called a sextant got its name because its shape forms one-sixth of a whole circle A group...

reputation as "the founder of lunar topography", and described ten new constellations, seven of which are still used by astronomers. According to the Polish...

difference is hardly detectable with indirect viewing based devices like sextant equipped with a vernier, and impossible with more traditional tools like...

selected by NASA to proceed to formulation phase in April 2013. NICER-SEXTANT uses the same instrument to test X-ray timing for positioning and navigation...

XPNAV-1 is the first pulsar navigation mission launched into orbit. SEXTANT SEXTANT (Station Explorer for X-ray Timing and Navigation Technology) is a...

Cassiopeia A (Cas A) (listen) is a supernova remnant (SNR) in the constellation Cassiopeia and the brightest extrasolar radio source in the sky at frequencies...

Bird invented the first sextant. This replaced the Davis quadrant and the octant as the main instrument for navigation. The sextant was derived from the...

zodiacal armillary, largest azimuth quadrant of steel and the trigonal sextant. The basement of Uraniborg included an alchemical laboratory, with 16 furnaces...

developed from angle measurements with quadrants and the unaided eye, through sextants combined with lenses for light magnification, up to current methods which...

following constellations: Pisces Aries Taurus Gemini Cancer Leo Virgo Libra Scorpius Ophiuchus Sagittarius Capricornus Aquarius The constellations Cetus and...

the month is derived from the position of the Moon near the Vishākhā constellation ("Nakshatra") on the full-moon day. In the Vaishnava calendar, Madhusudana...

astronomical thinking until the modern era. Most of the most prominent constellations known today are taken from Greek astronomy, albeit via the terminology...

Full-Moon Day of the Karthigai Month when the stars align on a Karthika constellation. Tamizhans light Deepams outside and inside their homes to celebrate...

Solar Calculation Details". Biegert, Mark (21 October 2015). "Correcting Sextant Measurements for Dip". Math Encounters (blog). Retrieved 22 September 2017...

available data with naked-eye observatories, which worked with highly complex sextants and quadrants. Tycho could not make sense of his observations, but Johannes...

Navigational sciences were highly developed, making use of a rudimentary sextant (known as a kamal). When combined with detailed maps of the period, sailors...

Other purchases included octant, equatorial, two theodolites, 10-foot sextant. The observatory was expanded by architect Marcin Knackfus in 1782–1788...