... X-rays are made up of photons that are emitted from stars, or quasars, or supernovae, the sun, or simply: anything that is undergoing a change either in size or temperature or giving out heat. ... in an X-ray binary star system, in which one normal star's orbit is crossed by a neutron star, when the neutron star by means of gravitational pull takes matter from the normal star X-rays form. ... Artists conception of a normal star (HDE 226868) and a black hole taking matter from the normal star. ...

... About ATNF overview . ... Governance overview . Australia Telescope Steering Committee . ... Staff list | ... Murchison Radio-astronomy Observatory . ... Parkes radio telescope . ... Mopra radio telescope . ... Australia Telescope Online Archive (ATOA) . ... VLBI . ... From: "Sergei Gulyaev" <sergei.gulyaev_at_aut.<!--nospam-->ac.nz> . ... p.yock_at_auckland.<!--nospam-->ac.nz>, "Derek McCormack" <Dmccorma_at_aut.<!--nospam-->ac.nz>, . ... First observations show that in general pointing is not . ...

... Astronomy index . ... This tour, of the world of astronomy, physics and spaceflight, may just as well end with a light-hearted 1878 poem by the Czech poet Jan Neruda . ... Do Frogs Exist there Too ?" . ... Like moles they dig for learning. ... They call one foot, that's all. ... Do frogs exist there too?" ... star? jim ?ab?k u?en? . ... teprv jim loket jeden. ... Foot" as used here, in Czech "loket," actually means "cubit," the distance from elbow to stretched fingertips, about a foot and a half. ...

... Telescopes ћ Binoculars ћ Microscopes . Meade Ultra-High Transmission coatings (UHTC ) Group . ... Meade Standard Coatings: The optical surfaces of all Meade telescopes include high-grade optical coatings fully consistent in quality with the precision of the optical surfaces themselves. ... These specialized, and extremely advantageous, coatings are offered here as the Meade Ultra-High Transmission Coatings (UHTC) group, a coatings group available optionally on many Meade telescope models. ...

. This color image was obtained with Fuji color film (Super Plus 400) in focal plane of the 70-cm reflector (F = 27 m) at Lisniki Observatory by A.M.Evtushevsky. Data and time of observation: April 27, 1997, 21:25 LT. Comet-Earth distance: 1.7 a.u. Time of exposure: 10 min. Field of view : 3 minutes of arc. Distance between shells, in average: 15 000 km. Diameter of bright coma in the picture center: of about 5 000 km. Last updated: January, 2005.

Measurement of Sky Brightness at the Iranian National Observatory Davoud Afshari1 and Sadollah Nasiri1,2 1Physics Department, Zanjan University, Zanjan 45195-313, Iran; Institute for Advanced studies in Basic Science (IASBS), Zanjan 45195-1159, Iran; Measurement of light pollution 2 Introduction Among 34 candidate sites at the central part of the country, 5 sites namely Garkesh (in Kashan ), Kolahbarfi(in Kashan ), Deynava (in ... One of these is light pollution. ...

... There are preliminary series of photometric and radio spectral observations of the above-mentioned stars, archival data on the light curves of the stars, results of the search for OH and H 2 O maser emission in IRAS point sources that possess the IR parameters similar to Miras. ... The aim is a detailed study of the maser emission variability. ... In 1996-1997, astronomical observations of Mira Ceti-type stars (miras) were carried out in three spectral ranges: optical, infrared, and radio. ...

Bright Supernova - Archives On these pages you will find references to Supernovae which have faded into oblivion. ... Finally, in 1999, when I took over the International Supernova Network's Latest Supernovae page I retitled the main page "Latest Supernovae", BUT, it's the "Latest Supernovae" page of the "Bright Supernovae" pages which are also sub-pages of ISN. ... Brightest supernova in 2005 . ... Brightest supernova in 2002 . ... Brightest supernova in 2000 . ... Brightest supernova in 1999 . ...

... Yes, Exploding Comet 17P/Holmes is one of the strangest things ever seen by astronomers - professional and amateurs alike. ... We also had some club members who received some Astronomical League awards...and we'd like to congratulate them! ... It is again a potluck, and is being held at the Masonic Temple in Galion ( 1252 State Route 598, Galion , OH 44833) Here's a map: Map of 1252 State Route 598 Galion, OH 44833-9367, US And, along with the party come RAS elections for 2008! ... Comet 17P/Holmes ...

... The issue of notes for one pound and for ten shillings were to circulate "As fully as sovereigns and half-sovereigns are current and shall be legal tender in the United Kingdom for the payment of any amount" . Why not the Bank of England, with all their experience and expertise? The Bank felt that large numbers of low-value notes wouldn't be "safe" unless they were printed on special hand-made paper. ... Both notes were the same size and were printed on only one side of paper. ...

... Артикул: C6501B2-11 Цвет: серый Описание: cезон - демисезонные Материал верха: кожа натуральная Материал подкладки: кожа натуральная, текстиль Материал стельки: кожа натуральная, текстиль Материал подошвы: искусственный материал, гладкая Параметры изделия: для размера 39/39: толщина подошвы 0,5 см, ширина носка стельки 8 см,длина стельки 25 см Уход за изделием: протирать губкой Страна дизайна: Италия Страна производства: Китай Упаковка: коробка . Пол: Женский . ... Тип товара: Кеды . ...

... Prof. J. Hough, dean of Physical Sciences Dept. ... Dr. T. Gledhill . ... PDF file ] . Gledhill T.M., Takami M. (2001) Scattered light models of the dust shell around HD 179821. ... Hough J.H., Aitken D.K. (2003) Polarimetry in the infrared: what can be learnd? Journal of Quantitative Spectroscopy and Radiative Transfer , v.79-80, p.733-740. ... Lucas P.W. (2003) Computation of light scattering in young stellar objects. ... 2003) Scattering of light from atmospheric ice analogues. ...

... Astrophysics Group . ... Aperture Synthesis with Light . ... MRAO Telescopes . ... Stars ? ... The astronomer?s desire to see things in ever greater detail is thwarted at optical wavelengths by the Earth?s atmosphere: making optical telescopes larger does not provide more detail in the images. ... The Cambridge Optical Aperture Synthesis Telescope (COAST) has been developed to meet the very demanding task of imaging the surfaces of individual stars and studying the interaction of close pairs of...

... Exposure Time Calculator (ETC) . Survey processing . ... VISTA is a 4-m class wide field survey telescope for the southern hemisphere, equipped with a near infrared camera (1.65 degree diameter field of view at VISTA's nominal pixel size) containing 67 million pixels of mean size 0.34 arcsec and available broad band filters at Z,Y,J,H,K s and a narrow band filter at 1.18 micron. A wide field visible camera, if constructed, could also be used on VISTA. ... Tile . ... ESO VISTA Public Surveys . ...

NMW survey overview . Access image archive . ... The New Milky Way survey aims to detect bright (V<13.5) optical transients near the Galactic plane using an automated wide-field (8x6 deg.) system capable of surveying the whole Milky Way area visible from the observing site in one night. ... All images obtained during the transient search survey are available online (please use the image archive access form ). ... Images per field: . ... Images per night: . ... Milky Way imaging time: . ...

... TAIL . ... 1997 3 09.82 . ... 4.5 . ... GUR . ... Mar 9.82: bright arcs visible near nucleus (on the south, sunward side). Mar 13.63: arcs.. ... CCD ST6 + F=110mm, 1:4 lense: Dia=27', ion tail in PA 348 deg. and dust tail in PA 321 with sinchrones:some brightest are inclined in PA 328, 327 and 332 deg.. Mar. 19.61: 3 arcs in the sector near the nucleus in PA 163 up to 278 deg., brightest part in PA 237 deg., distanse between arcs approx. 30", full size of whole this structure about 2'. ...

... The most important tool you have to see the universe is not the large light buckets that are proliferating, but rather your eyes. ... Light enters the eye through the cornea, passes across the aqueous humor (the liquid behind the cornea), passes through the pupil and through the lens. ... After passing the lens, the light then crosses the "vitreous Humor" a jelly-like substance that fills the inner eye, and reaches the retina, the light sensitive tissue at the back of the eye. ...

... About meteorites . ... Meteorite Encyclopedia . ... About laboratory . ... On the night of September 24-25, in the north of Irkutsk Oblast, local residents saw a brightly glowing space object draw a line across the sky and fall into the taiga. ... But scientists learned of the heavenly visitor only on October 3, when a fax arrived at the Institute of Sun And Earth Physics from Bodaibo. ... The first thing we did was to interview residents of villages located along the meteor's flight path. ...

... Dept. for Astrometry & Space Geodynamics . ... Conferences . ... Borysenko S.A. A program to discover comets. ... 6th Open Young Scientists' Conference on Astronomy and Space Physics, April 27-30, 1999, Kyiv Borysenko S.A. First results of dynamical spectroscopy of comet Halley. ... 8th Open Young Scientists Conference on Astronomy and Space Physics, April, 2001, Kyiv Borysenko S.A. Solar activity in November-December 1985 and its effect on the fast variations in the spectral lines of comet Halley ....

Electron-Bombarded, Back-Illuminated CCD Sensors . For Low-Light-Level Imaging Applications . ... A voltage potential accelerates the amplified electron signal from the MCP output onto a phosphor screen where the image is converted back to light. A glass fiberoptic element couples the phosphor screen image out of the tube. ... An Electron Bombarded CCD (EBCCD) eliminates the complicated image transfer chain by inserting a thinned back-illuminated CCD into the image intensifier tube. ...