Halo around the Moon. Halo arises when the light beams refracted on the high clouds icy chips ina form of a six side prism. As a result we see a small halo circle with a 22°-radius. The big circle is formed by the beams paased through the side edge and the base of prismochips. Its radius is equal to 46° (nearly). The big circle is observed rarely and is shining weaker but it is easier to observe it near the Sun, if comparing with the small halo invisible in the bright Sun light. ...

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• redkoste

. Main page . Photos . Amsterdam . Amsterdam . Amsterdam . Amsterdam . Amsterdam . Amsterdam . Amsterdam . Amsterdam . Amsterdam . Amsterdam . Amsterdam . Amsterdam . The red lights district . The red lights district . The red lights district . The red lights district . Leiden . Leiden . Leiden . Leiden . Leiden . Leiden . Leiden . Leiden . Leiden . Previous page . 1 2 3 4 5 . Next page . Not paginated version of this web-page . Копосов Сергей , 2003-2007 . Koposov Sergey , 2007

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... Comet Animation . ... Comet structures are diverse and very dynamic, but they all develop a surrounding cloud of diffuse material, called a coma, that usually grows in size and brightness as the comet approaches the Sun. ... As comets approach the Sun they develop enormous tails of luminous material that extend for millions of kilometers from the head, away from the Sun. ... The evaporated molecules boil off and carry small solid particles with them, forming the comet's coma of gas and dust. ...

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• Spacecraft Observing the Sun and the Heavens above
• Ionospheric troughs [Oulu]
• The Sun

... The European HST Archive has been moved to ESA's European Space Astronomy Centre ( ESAC ), Spain, where most of ESA's Space Science Archives are located and operated from. ... The Space Telescope European Coordinating Facility (ST-ECF), jointly operated by ESA and the European Southern Observatory ( ESO ) was, until the end of 2010, the European HST science facility, supporting the European astronomy community in exploiting the research opportunities provided by the Hubble Space Telescope. ...

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• VLT First Light
• About HST

http://hubblesite.org/newscenter/archive/releases/1996/22/text/ Probing the mysterious heart of the Crab Nebula, the tattered remains of a stellar cataclysm witnessed more than 900 years ago, astronomers using NASA's Hubble Space Telescope have found that the Crab is even more dynamic than previously understood, based on a cosmic "movie" assembled from a series of Hubble observations. ... Because of this flickering, the neutron star is also called a "pulsar." ...

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• Edwin Hubble and Family in Louisville
• University of Louisville Physics and Astronomy Bullitt Lecture Series

... For the past years I have been working on the problem of synthesis of light curves of close binary systems, consisting of a normal star and a compact object (point object with fixed X-ray luminosity). ... Possible existence of a bright spot on the disk's lateral surface is taken into account. ... The last of then will be published in Gordon and Breach Publishers ( Cherepashchuk A.M., Katysheva N.A., Khruzina T.S., Shugarov S.Yu. ... Cherepashchuk A.M., Katysheva N.A., Khruzina T.S., Shugarov S.Yu. ...

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... Home Lectures Lecture Series 2011-2012 Lecture Series 2011-2012 ? тАЬA Ray of Light in a Sea of Dark (Matter)тАЭ ? Charles Keeton . ... Charles Keeton , associate professor of physics and astronomy at Rutgers University and faculty director of the Aresty Research Center for Undergraduates , will speak to the AAA Friday, March 2, on тАЬA Ray of Light in a Sea of Dark (Matter).тАЭ The free public lecture begins at 6:15 p.m. in the Kaufmann Theater of the€а American Museum of Natural History . ...

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... This thread contains a step-by-step recipe to extract EPIC (pn will be used as an example) light-curves of a point-like source, starting from a calibrated, concatenated event list (either produced with epproc or available as PPS product; it will bear the name: PN.fits in this thread). The content of this thread is the same as Extraction of a X-ray light curve for a point-like source (command-line version). ... in the lccorr GUI window (see Fig.7) define at least the following widgets: . ...

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• Extraction of a X-ray light curve for a point-like source
• Extraction and correction of an X-ray light curve for a point-like source
• Future developments

Title : spooky01.WAD, issue 1 Date Finished : November 98 Author : Richard Wiles Email Address : richardgwiles@compuserve.com Other Files By Author : The 'Dickie' Series (Doom2 - maps 1-10) Misc. ... Additional Credits to : My girlfriend Ness for tolerating my doom 'habit'. ... Type of DOOM I file* Map # : E2M1 Single Player : Yes Cooperative 2-4 Player : NO. ... New Music : No New Graphics : No Demos Replaced : None * Construction * Base : New level from scratch Build Time : Ages.. ...

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• http://crydee.sai.msu.ru/ftproot/pub/rec/music/lyrics/cs-uwp/s/sisters.of.mercy/light
• http://crydee.sai.msu.ru/ftproot/pub/rec/music/lyrics/cs-uwp/i/ice.cube/colorblind
• http://crydee.sai.msu.ru/ftproot/pub/rec/music/lyrics/cs-uwp/r/ride/gba.cd

David BESSIS (Moscow, LIFR) . ... Patrick DEHORNOY (Caen Univ.) . ... Ivan DYNNIKOV (Moscow, MSU) . ... Alexandr GAIFULLIN (Moscow, MSU, IUM) . gaifull AT mccme.ru . ... los AT cmi.univ-mrs.fr . Serguei LANDO (LIFR, IUM, Org. ... lando AT mccme.ru . ... Stepan OREVKOV (Toulouse Univ., ... Alexei SOSSINSKI (LIFR, Org. ... abs AT mccme.ru . Herv SIBERT (Caen Univ.) . ... Vladimir VERSHININ (Montpellier Univ.) . ... Presentations for exceptional braid groups . ... 13:00 Lunch . ...

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• Conference "Zeta functions"
• Moscow Russian-French conference (November, 2003)
• Conference Zeta functions

... S.P. KOROLEV ROCKET AND SPACE CORPORATION ENERGIA . ... OAO RSC "Energia" . ... News . ... A manned transportation spacecraft Soyuz TMA-11M has docked with the International Space Station (ISS). ... The final flight operations in the course of the spacecraft rendezvous and docking with the space station were supervised by the State Commission for manned systems flight tests and the Technical Manager for flight tests of manned space systems, the RSC Energia President and General Designer V.A. Lopota....

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... 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) . ...

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• From Power Up To Bash Prompt: Administrivia

... The First (Experimental) International Astronomy Olympiad . The following olympic problems were proposed for the participants on the theoretical part: Grades 8-10 . ... Why is it sometimes better to use a small telescope in orbit around the Earth than it is to use a large telescope on a mountain top? ... What will an observer looking to the Moon through the telescope see? ... Paper with a drown circle and table of maximal elongations of Mercury and Venus had been done for participants. ...

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• The International Olympiad of Euro-Asian Astronomical Society
• XI International Astronomy Olympiad

... Submitted by Al Takeda on 11/21/2013 09:43:24 . Comet C/2012 S1 (ISON) - November 15, 2013 . Comet C/2012 S1 (ISON) was still rising early enough to clear the trees (approximately 7-degrees altitude) at the Clubhouse before astronomical twilight. ... The comet was still a binocular object under the local sky at the Clubhouse. 5 images x 35-second subframes, Total= 2.9 minutes. ... ATMoB Clubhouse, Westford, MA, 15 November 2013. ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...

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... 2011: . Detection of galaxies with large peculiar velocities . ... New galaxies with polar rings . ... The new catalog contains 275 galaxies. ... Radio galaxy RC J0311+0507, a unique object of the early Universe . ... The estimation of the stellar population age in the host galaxy via the multicolor photometry (BTA) and new infrared data (UKIRT, 2011), amounting to 0.8 Gyr results in the moment of its formation when the universe was about 0.5 milliard years old (z~10). ... Archive . ...

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• Northern Lights and GLORIA
• Discovery of an isolated dwarf spheroidal galaxy neighboring the Local Group
• articles_olga_eng

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. ...

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The Steady State model of the Universe was proposed in 1948 by Bondi and Gold and by Hoyle. ... At the time the Steady State model was proposed, the Big Bang model was in trouble because the value of the Hubble constant was clearly bigger than the inverse of the age of the Universe. ... Thus the Steady State model has flat spatial sections like the critical density Big Bang model. ... The Steady State model has no adjustable parameters to correct for this error, but the Big Bang does. ...

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• HyperLEDA documentation: compilation of cz measurements (a110)
• Electron bombarded sensors-intro
• Back-Illumination Paper-App

Participants about project . ... makes the world a welcoming place. ... we see it shared by those who love it. ... us more aware of our own community when we shared it . with the schools around the world. ... pleased my students chose to share the feelings of . ... Our town cannot grow much as it is like an island with . other communities growning around it. ... diverse, with many Mexican people recently adding to . ... Our town is old and the new City Building looked a bit . ... city. ...

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Mark your calendars to reserve Tuesday, December 13 for a sensational astronomy meeting! The Amateur Astronomers Association of Princeton is presenting astronomer and author Kim Weaver for a presentation titled: "New Eyes on the Universe: Observing Beyond Hubble with the Chandra and Spitzer Space Telescopes," and will highlight violent processes and dust-enshrouded objects revealed only by searching for signatures in x-ray and infrared light. ...

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• Amateur Astronomers Association of Princeton

... 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. ...

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• Database of Optical Properties -- Level: subpage
• Alexei Kritsuk's Home Page
• Database of Optical Properties -- Level: subsubpage