Matches in DBpedia 2016-04 for { <http://dbpedia.org/resource/History_of_the_telescope> ?p ?o }
- History_of_the_telescope abstract "The earliest known working telescopes appeared in 1608 and are credited to Hans Lippershey. Among many others who claimed to have made the discovery were Zacharias Janssen, a spectacle-maker in Middelburg, and Jacob Metius of Alkmaar. The design of these early refracting telescopes consisted of a convex objective lens and a concave eyepiece. Galileo used this design the following year. In 1611, Johannes Kepler described how a telescope could be made with a convex objective lens and a convex eyepiece lens and by 1655 astronomers such as Christiaan Huygens were building powerful but unwieldy Keplerian telescopes with compound eyepieces. Hans Lippershey is the earliest person documented to have applied for a patent for the device.Isaac Newton is credited with building the first \"practical\" reflector in 1668 with a design that incorporated a small flat diagonal mirror to reflect the light to an eyepiece mounted on the side of the telescope. Laurent Cassegrain in 1672 described the design of a reflector with a small convex secondary mirror to reflect light through a central hole in the main mirror.The achromatic lens, which greatly reduced color aberrations in objective lenses and allowed for shorter and more functional telescopes, first appeared in a 1733 telescope made by Chester Moore Hall, who did not publicize it. John Dollond learned of Hall's invention and began producing telescopes using it in commercial quantities, starting in 1758.Important developments in reflecting telescopes were John Hadley's production of larger paraboloidal mirrors in 1721; the process of silvering glass mirrors introduced by Léon Foucault in 1857;, and the adoption of long lasting aluminized coatings on reflector mirrors in 1932. The Ritchey-Chretien variant of Cassegrain reflector was invented around 1910, but not widely adopted until after 1950; many modern telescopes including the Hubble Space Telescope use this design, which gives a wider field of view than a classic Cassegrain.During the period 1850-1900, reflectors suffered from problems with speculum metal mirrors, and a considerable number of \"Great Refractors\" were built from 60 cm to 1 metre aperture, culminating in the Yerkes Observatory refractor in 1897; however, starting from the early 1900s a series of ever-larger reflectors with glass mirrors were built, including the Mount Wilson 60-inch, the 100-inch (2.5 metre) Hooker Telescope (1917) and the 200-inch (5 metre) Hale telescope (1948); essentially all major research telescopes since 1900 have been reflectors. A number of 4-metre class (160 inch) telescopes were built on superior higher altitude sites including Hawaii and the Chilean desert in the 1975-1985 era. The development of the computer-controlled alt-azimuth mount in the 1970s and active optics in the 1980s enabled a new generation of even larger telescopes, starting with the 10-metre (400 inch) Keck telescopes in 1993/1996, and a number of 8-metre telescopes including the ESO Very Large Telescope, Gemini Observatory and Subaru Telescope.The era of radio telescopes (along with radio astronomy) was born with Karl Guthe Jansky's serendipitous discovery of an astronomical radio source in 1931. Many types of telescopes were developed in the 20th century for a wide range of wavelengths from radio to gamma-rays. The development of space observatories after 1960 allowed accessto several bands impossible to observe from the ground, including X-rays and longer wavelength infrared bands.".
- History_of_the_telescope thumbnail Emblemata_1624.jpg?width=300.
- History_of_the_telescope wikiPageExternalLink Early_Period.html.
- History_of_the_telescope wikiPageExternalLink telescope.html.
- History_of_the_telescope wikiPageExternalLink 7617426.stm.
- History_of_the_telescope wikiPageExternalLink diggeshistory.html.
- History_of_the_telescope wikiPageExternalLink etel.asp?c=50004.
- History_of_the_telescope wikiPageExternalLink Powers-NYTimes.pdf.
- History_of_the_telescope wikiPageExternalLink TELESCOPE.PDF.
- History_of_the_telescope wikiPageExternalLink history.html.
- History_of_the_telescope wikiPageExternalLink 2011-12-Origins.pdf.
- History_of_the_telescope wikiPageExternalLink movie.php.
- History_of_the_telescope wikiPageExternalLink A_Brief_History.pdf.
- History_of_the_telescope wikiPageExternalLink lang,en.
- History_of_the_telescope wikiPageExternalLink lang,en.
- History_of_the_telescope wikiPageExternalLink supergiants02-04.
- History_of_the_telescope wikiPageExternalLink tascope.html.
- History_of_the_telescope wikiPageExternalLink page1.html&date=2009-10-25+06:32:14.
- History_of_the_telescope wikiPageID "213607".
- History_of_the_telescope wikiPageLength "66041".
- History_of_the_telescope wikiPageOutDegree "344".
- History_of_the_telescope wikiPageRevisionID "697195904".
- History_of_the_telescope wikiPageWikiLink 40-foot_telescope.
- History_of_the_telescope wikiPageWikiLink 400_Years_of_the_Telescope.
- History_of_the_telescope wikiPageWikiLink Accademia_dei_Lincei.
- History_of_the_telescope wikiPageWikiLink Achromatic_lens.
- History_of_the_telescope wikiPageWikiLink Active_optics.
- History_of_the_telescope wikiPageWikiLink Actuator.
- History_of_the_telescope wikiPageWikiLink Acutance.
- History_of_the_telescope wikiPageWikiLink Adaptive_optics.
- History_of_the_telescope wikiPageWikiLink Adrien_Auzout.
- History_of_the_telescope wikiPageWikiLink Aerial_telescope.
- History_of_the_telescope wikiPageWikiLink Albert_A._Michelson.
- History_of_the_telescope wikiPageWikiLink Alhazen.
- History_of_the_telescope wikiPageWikiLink Alkmaar.
- History_of_the_telescope wikiPageWikiLink Alloy.
- History_of_the_telescope wikiPageWikiLink Altazimuth_mount.
- History_of_the_telescope wikiPageWikiLink Aluminium.
- History_of_the_telescope wikiPageWikiLink Angle_of_incidence_(optics).
- History_of_the_telescope wikiPageWikiLink Aperture_synthesis.
- History_of_the_telescope wikiPageWikiLink Arecibo_Observatory.
- History_of_the_telescope wikiPageWikiLink Astronomical_interferometer.
- History_of_the_telescope wikiPageWikiLink Atmosphere_of_Earth.
- History_of_the_telescope wikiPageWikiLink BTA-6.
- History_of_the_telescope wikiPageWikiLink Balloon.
- History_of_the_telescope wikiPageWikiLink Bath,_Somerset.
- History_of_the_telescope wikiPageWikiLink Burning_glass.
- History_of_the_telescope wikiPageWikiLink CHARA_array.
- History_of_the_telescope wikiPageWikiLink California_Institute_of_Technology.
- History_of_the_telescope wikiPageWikiLink Cambridge_Optical_Aperture_Synthesis_Telescope.
- History_of_the_telescope wikiPageWikiLink Cardinal_point_(optics).
- History_of_the_telescope wikiPageWikiLink Carl_August_von_Steinheil.
- History_of_the_telescope wikiPageWikiLink Cassegrain_reflector.
- History_of_the_telescope wikiPageWikiLink Category:Copernican_Revolution.
- History_of_the_telescope wikiPageWikiLink Category:History_of_astronomy.
- History_of_the_telescope wikiPageWikiLink Category:History_of_technology.
- History_of_the_telescope wikiPageWikiLink Category:Telescopes.
- History_of_the_telescope wikiPageWikiLink Chandra_X-ray_Observatory.
- History_of_the_telescope wikiPageWikiLink Cherenkov_radiation.
- History_of_the_telescope wikiPageWikiLink Chester_Moore_Hall.
- History_of_the_telescope wikiPageWikiLink Christiaan_Huygens.
- History_of_the_telescope wikiPageWikiLink Christoph_Scheiner.
- History_of_the_telescope wikiPageWikiLink Chromatic_aberration.
- History_of_the_telescope wikiPageWikiLink Closure_phase.
- History_of_the_telescope wikiPageWikiLink Color.
- History_of_the_telescope wikiPageWikiLink Compton_Gamma_Ray_Observatory.
- History_of_the_telescope wikiPageWikiLink Conic_section.
- History_of_the_telescope wikiPageWikiLink Constantijn_Huygens,_Jr..
- History_of_the_telescope wikiPageWikiLink Copernican_heliocentrism.
- History_of_the_telescope wikiPageWikiLink Copper.
- History_of_the_telescope wikiPageWikiLink Cos-B.
- History_of_the_telescope wikiPageWikiLink Cosmic_Background_Explorer.
- History_of_the_telescope wikiPageWikiLink Cosmic_microwave_background.
- History_of_the_telescope wikiPageWikiLink Courage.
- History_of_the_telescope wikiPageWikiLink Crab_Nebula.
- History_of_the_telescope wikiPageWikiLink Curved_mirror.
- History_of_the_telescope wikiPageWikiLink Design.
- History_of_the_telescope wikiPageWikiLink Doge_of_Venice.
- History_of_the_telescope wikiPageWikiLink EXOSAT.
- History_of_the_telescope wikiPageWikiLink Effelsberg_100-m_Radio_Telescope.
- History_of_the_telescope wikiPageWikiLink Electromagnetic_spectrum.
- History_of_the_telescope wikiPageWikiLink Ellipse.
- History_of_the_telescope wikiPageWikiLink Enceladus.
- History_of_the_telescope wikiPageWikiLink Encyclopedia_of_the_History_of_Arabic_Science.
- History_of_the_telescope wikiPageWikiLink England.
- History_of_the_telescope wikiPageWikiLink Essex.
- History_of_the_telescope wikiPageWikiLink Euclid.
- History_of_the_telescope wikiPageWikiLink European_Southern_Observatory.
- History_of_the_telescope wikiPageWikiLink Exposition_Universelle_(1900).
- History_of_the_telescope wikiPageWikiLink Extreme_Ultraviolet_Explorer.
- History_of_the_telescope wikiPageWikiLink Eyepiece.
- History_of_the_telescope wikiPageWikiLink F-number.
- History_of_the_telescope wikiPageWikiLink Fast_Fourier_Transform_Telescope.
- History_of_the_telescope wikiPageWikiLink Federico_Cesi.
- History_of_the_telescope wikiPageWikiLink Field_of_view.
- History_of_the_telescope wikiPageWikiLink Figuring.
- History_of_the_telescope wikiPageWikiLink Flint_glass.
- History_of_the_telescope wikiPageWikiLink Fluid_bearing.
- History_of_the_telescope wikiPageWikiLink Fourier_transform.
- History_of_the_telescope wikiPageWikiLink Francis_G._Pease.