... ESO is building what will be the World's largest optical telescope array, The Very Large Telescope (VLT). The VLT Project organisation is responsible for the design and construction of the Unit Telescopes, including enclosures, optics, adapter-rotators and coating unit. ... Unit Telescopes Overview - This page is outdated, an update is in process. ... Secondary mirror (M2 Unit) - This page is outdated, an update is in process. ... Coating Unit - This page is outdated, an update is in process. ...

... Bad Astronomy . Misconceptions . ... Bad Astronomy : "We're light years more advanced than our competition!" ... Even the closest astronomical object, the Moon, is 400,000 kilometers away! ... A beam of light will travel 9,500,000,000,000 kilometers in one year. This distance is defined as a light year ; the distance light travels in a year. ... This is another example of Bad Astronomy; like a light year, a parsec is a unit of distance, not time (to be specific, it equals 3.26 light years) . ...

... Bionic eyes. If our eyes could see in different wavelength bands, this is what the Sun would look like. ... Visible light, crucial to photosynthesis, is a type of radiation. ... At the heart of this revolution is the recognition that light travels as a wave. ... Dreams of Fields . ... By the time the fields go from strong to weak and back to strong, the wave has moved a certain distance, known as the wavelength. ... Red light, blue light, infrared light, ultraviolet light, radio waves, x-rays ? ...

Astronomy Picture of the Day . High Energy Stereoscopic System II . ... Image Courtesy: H.E.S.S. Collaboration Explanation: The largest of its kind, the High Energy Stereoscopic System (H.E.S.S.) II telescope stands in the foreground of this photo. ... Now beginning an exploration of the Universe at extreme energies, H.E.S.S. II saw first light on July 26 . ... As the gamma rays impact the upper atmosphere they produce air showers of high-energy particles. ... Publications with words: telescope . ...

... 2012 July 27 . High Energy Stereoscopic System II . Image Courtesy: H.E.S.S. Collaboration . Explanation: The largest of its kind, the High Energy Stereoscopic System (H.E.S.S.) II telescope stands in the foreground of this photo. ... Now beginning an exploration of the Universe at extreme energies, H.E.S.S. II saw first light on July 26 . ... As the gamma rays impact the upper atmosphere they produce air showers of high-energy particles. ... About APOD | ...

... Following the Observatory's initiative in 2002, drawing attention locally to the issue of light pollution and the problems it produces both for astronomy and awareness of the night sky, and for saving energy and improving the natural environment, Mark Bailey made a presentation on light pollution, on 7 May 2003, to the Armagh City and District Council Environment, Health and Recreation Committee. This focused specifically on the growing problem of light pollution in the City of Armagh. ...

Tired light models invoke a gradual energy loss by photons as they travel through the cosmos to produce the redshift-distance law. ... The tired light model can not produce a blackbody spectrum for the Cosmic Microwave Background without some incredible coincidences. ... So the CMB must have come from a far away part of the Universe, and its photons will thus lose energy by the tired light effect. ... Assume that the CMB starts out as a T = (1+z)*T_o = 2.998 K blackbody, which is the blue curve. ...

Perhaps the greatest theoretical achievement of physics in the 19th century was the discovery of electromagnetic waves. ... It is possible to use this to define a unit of electric charge, as the charge which repels a similar charge at a distance of, say, 1 meter, with a force of unit strength (actual formulas make this precise). ... But "field" originally only meant the force a magnet or an electric charge could expect at a point in space, if it were placed there. ...

... A wonderful site where the debate about the nature of light sits. ... Shadow and Light science activities - A short list of activities for students about light and shadow designed by an undergraduate Education major in New Foundland. ... Projecting Shadows - Fantastic interactive site about how to make shadows from the Light/Block/Shadow technique. ... The Energy Story: Solar Energy - Aimed towards children, this is a short introduction about solar energy. ... You Light Up My Life | ...

... Гель для душа Caudalie "The Des Vignes" с алоэ вера имеет мягкую моющую основу растительного происхождения, бережно сохраняющую естественный уровень pH кожи. ... SilverStone F1 z550ST - это радар-детектор, который четко определяет сигналы всех диапазонов (X, UltraX, K, UltraK, Ka, Ku), сигналы системы VG-2, лазерные сигналы, сигналы стационарных камер типа Стрелка-СТ и своевременно предупреждать о приближении к ним. ... SilverStone F1 z550ST также обладает защитой от ложных срабатываний. ...

Please enter the lightcurve file name and period search parameters: . Lightcurve file: . ... Apply the Heliocentric correction and convert all dates to Terrestrial Time (TT)? ... Also, the Heliocentric correction cannot be applied to such lightcurves. ... This period search service is also available at the mirror sites: Mirror 1 , Mirror 2 , Mirror 3 , Mirror 4 . You may download the latest source code distribution and install the period search service at your own web server. ...

Wave-Particle Duality of Light. click here to see a wave experiment . ... In the wave theory, greater light intensity simply means more photons. Each photon ejects electrons in the same way, so more intensity means more electrons. Threshold frequency and electron K.E. should not be affected by intensity. ... Light frequencies below the threshold eject no electrons, no matter how intense the light. Light frequencies above the threshold eject electrons, no matter how low the intensity. ...

Blackholes2 Forum Message . Forums: . Atm ћ Astrophotography ћ Blackholes ћ Blackholes2 ћ CCD ћ Celestron ћ Domes ћ Education . ... Discussion Forums | ... Post . ... Does Sound Or Light Stop At Some Point? ... Post Message | ... Where does sound, light or energy stop? ... www.astronomy.net . About Astronomy Net | Advertise on Astronomy Net | ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

... The FOC suffers from various types of background, the most important of which are thermal electrons, Cerenkov radiation from high energy particles, geocoronal emission lines, zodiacal light, and light scattered within HST from the bright Earth or Moon. ... From on-orbit measurements using the f /96 camera, the former background has been found to vary with solar zenith distance (ZD); see Sections 6.4, 6.5, and 7.0 of the FOC Instrument Handbook , version 7.0, for more details. ...

... Обзор LPR фильтра. Впечатления от наблюдений с LPR фильтром. ... Характеристики цветных фильтров Baader-Planetarium . Мой перевод pdf- файла о фильтрах с сайта Baader-Planetarium (379 кб) . ...

... Light curve extraction is controlled by setting the parameter rateset , which is the name of the output file containing the ligh curve. Light curves are OGIP compliant histogram files of counts as a function of time. ... The bin size is set with the parameter timebinsize . ... As with images, rather than just accumulating counts in each bin of a light curve, one can sum up the values of a another column in the input table, by specifying the name of the column in the parameter zcolumn . ...

Astronotes Armagh Planetarium's Stellar Blog! ... Armagh Planetarium . ... Our Galaxy . ... Universe . Other Galaxies . ... Space Flight . ... The light and the dark: a HST image of galaxies with the distribution of dark matter superimposed (Image credit: NASA, ESA, P. Simon (University of Bonn) and T. Schrabback (Leiden Observatory)) . ... A combination of 575 images from the Hubble Space Telescope and data from ground-based telescopes, the image contains 446 000 galaxies. ...

... The MROI makes use of optical interferometry, much like COAST . ... As a major collaborator, the Cambridge Astrophysics Group is currently developing some of the mechanisms below, specifically the delay line and the fast tip-tilt system. ... Fringe tracking is used to control the positions of the delay line trolleys to make sure the light beams from the different telescopes in the MROI arrive at the science camera beam combiners in phase so that an interference pattern can be produced. ...

... SCIENCE AND BUSINESS . Such a trifle as a starry night sky of largest observatories turned out to be a small change coin in commercial bargains for exclusive communal services in Russia, and for a few elite flats in penthouses in Ukraine. SCIENCE AND BUREAUCRATISM . ... Till in Russian) . ... Clericalization of science and education (Till in Russian). ... Researcher of the Sternberg Astronomical Institute, The Moscow University. ... SAI home page . ... October, 2008) . ... November, 2007) . ...

... Per le scuole . Attivit†а e eventi . ... Vademecum per CONSIP . ... PROGRAMMA . Da Luned†м 9 a Venerd†м 13 novembre . ... VISITE PER LE SCUOLE ALL'OSSERVATORIO . Esperimenti sulla natura della luce e osservazioni del Sole al telescopio . ... Gioved†м 12 novembre . ... Programma (in pdf) . Sabato 14 novembre . ... I SEGRETI DELLA LUCE: GIOCHIAMO CON LA SCIENZA . Conferenza spettacolo , teatro didattico ed esperimenti sulla luce e i colori . ... Per tutti gli altri eventi : . ...