Photon Scattering: Basic Principle of Photon Scattering . Audio Narration is available . No Scattering: Photon Source and Detector . ... For optical photons, scattering goes as wavelength to the -4 power. In the case of blue photons compared to red photons, this means that blue photons are about 10 times more likely to get scattered than red photons. ... Watch the blue photons scatter away from the detector . ... Interstellar dust make stars appear redder than they really are . ...

... Telescopes . ... Diameter of circular antenna . ... Number of antenna elements . ... Geometrical area . ... Effective area of full circle . ... Wavelength range . ... Frequency range . ... 2 arcsec . ... Flux density limit . ... Absolute brightness temperature limit . 0.050 mK . ...

SAI VO . ... SAI CAS . ... Web Services . Catalog Access Services . ... SAI VO Wiki . ... Program Access . SAI CAS Wiki . SAI Web Services . ... DSS Mirror . ... We provide an implementation of IVOA standard Simple Image Access Protocol interface to our DSS mirror. Service metadata is available here . Currently, we provide the atlas service only, which returns the list of original DSS images intersecting the requested sky area. ... SAI MSU | ...

. Английская версия . Последнее обновление в мае 2008 г. Проект РадиоАстрон .

... Recent Topics . ... Forum . MAO main . Flame . The "Flame" description . ... The English description is not quite correct, I suggest something like: . ... Just testing forum . The administrator has disabled public write access. sekanato . ... Description changed. ... The administrator has disabled public write access. Board Categories MAO main - Info - MAO - news - Flame Technical - Technical Support(Forum)(Техподдержка(Форум)) . ... Powered by Kunena Forum . ...

Results of analysis . ... IAA EOP Service . ... EOP series are regularly submitted to the IERS, and also are available at the IAA EOP Service page. EPN coordinate time series . EUREF Permanent GPS Network (EPN) coordinate time series is computed from analysis of available EUREF weekly solutions. ... Second solution is based on independent combination of individual EPN Analysis Centers' solutions . ... USNO GPS Timing Operations . ... GPS Time Series . ... EPN : European Permanent GPS Network . ...

... О метеоритах . ... О лаборатории . ... Падение 12 февраля 1947 г. 10 ч. 38 мин. ... Е.Л. Кринов, 1981 г. Падение Сихотэ-Алинского метеорита 12 февраля 1947 г., 10 ч. 38 мин., г.Иман, Приморский край. ... Установить место падения метеорита пока не удалось.. Вечерняя Москва" 17 февраля 1947 г. Один из кратеров, образовавшихся при падении Сихотэ-Алинского метеорита. ... Схема дробления метеорного тела во время движения в земной атмосфере с космической скоростью (Кликни чтобы увеличить). ...

... ---------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- catalog .dat 269 36020 Revised NLTT Catalogue and 1st Supplement Description of catalog columns (see Paper II for details): -------------------------------------------------------------------------------- Summary Information 1) NLTT number (drawn consecutively from 1 to 58,845) 2) binary component 3) RA ( 2000 ), epoch 2000 ( ...

. Pulkovo Database of Observations of Solar System Bodies . Available databases: . Observations of planets and their satellites . Observations of minor planets and comets . Info . General description of this database . Main Page .

PUBLICATION SCHEME - GUIDE TO INFORMATION Class of Information Who we are and what we do Description of Information Manner Fee This class contains information on: · the roles and responsibilities of the organization and those working at a senior level in the organization; · the aims, objectives On the Planetarium website: www.armaghplanet.com None for information available on the website. ... Available for inspection. ... On the Planetarium website: www.armaghplanet.com None ...

. CDS: - Catalogues and files available at CDS . HEASARC - HEASARC Browse: Main Interface . SIMBAD - SIMBAD Quaery Form . WEBDA - Description . Variable Stars - Variable Stars in Globular Clusters . Page is modefied 27.04.2006 . E-Mail: marsakov@ip.rsu.ru

... The Military Aspects of the Soviet Cosmonautics : A Side View . This book is the first effort in an unclassified Soviet publications to provide a comprehensive overview of the Soviet military space program. Presented here are the classification of the military space systems by functions performed (Chapter 1), the analysis of the organizational evolution of the Soviet space program (Chapter 2) and the description of all observable satellite systems of military or double destination (Chapter 3). ...

... Chapman, R. and Brandt, J.: The Comet Book: A Guide for the Return of Halleys Comet (1984, Jones and Bartlett) ? ... Branley, F.: Comets (1984, T.Y. Crowell) ? good picture book for students in grades K-3. ... Schatz, D.: The Comet Cometh: An Activity Book for the Return of Comet Halley ? ... Glenn, W.: "Halley's Comet Makes a Comeback'' in The Science Teacher Jan. 1984, p. 38. ... To construct a model of an Alien Being that could exist on another planet or satellite in our solar system. ...

MATHEMATICAL MODELING: . ... This model is developed on the base of the probabilistic description of the collisional aeronomical processes and is realized on a computer as the numerical system (stochastic model). ... Shematovich, V.I., Bisikalo , D.V.             Nonequilibrium processes in the planetary and cometary atmospheres. ... In Russian) . ... Piarnpuu , A. A.; and Shematovich, V. I.       Construction of structural stochastic models of collision processes in rarefied gas media (abstract) . ...

I/146 Positions and Proper Motions (Roeser+ 1988) ================================================================================ Catalogue of Positions and Proper Motions Roeser S., Bastian U. =1988A .. ... 449R ================================================================================ ADC_Keywords: Positional data; Proper motions Description: PPM North gives J2000 positions and proper motions of 181,731 stars north of -2.5 degrees declination. ... The mean epoch is near 1931. ...

... The words are numbered according to the reference mentioned above. ... 59 WORD wSecond ; // 0 .. 59 satellite tracking start time (GMT) float fStep ; // reserved WORD wMass ; // reserved BYTE reserved [12] ; // reserved WORD wExtraBytes ; // reserved } TRAJECTORYHEADER ; NOTE: the satellite tracking start time is a hardware operating start time to follow satellite. typedef struct { // ephemeris at satellite tracking start time double time ; // Epoch time (yyddd.ddddddddd)...

Astronomy Discussion Forums . Forums: . Atm ћ Astrophotography ћ Blackholes ћ Blackholes2 ћ CCD ћ Celestron ћ Domes ћ Education . ... Discussion Forums . ... Your Description Is To Vague. Forum List | ... Post Message | ... www.astronomy.net . ... Unless otherwise specified, web site content Copyright 1994-2016 John Huggins All Rights Reserved . Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

... Field of interest: data analysis and interpretation of X-ray observations of BHC and NS systems, astrophysics of compact objects and related phenomena: X-ray , optical and radio observations , shocks and stellar winds, emission mechanism, the spectral and timing analysis of the X-ray emission from microquasars ( signature of accreting BH), atoll- and Z-sources ( signature of accreting NS), modeling of INTEGRAL images % . ...

. Statistics of sunspot activity . The sunspot indices . My observations . NGDC's observations . The solar regions . Links . About authors . Russian pages . The solar regions . NOAA 11300's . NOAA 11200's . NOAA 11100's . NOAA 11000's . NOAA 10900's . NOAA 10800's . NOAA 10700's . NOAA 10600's . NOAA 10500's . NOAA 10400's . NOAA 10300's . NOAA 10200's . NOAA 10100's . NOAA 10000's . NOAA 09900's . NOAA 09800's . NOAA 09700's . NOAA 09600's . NOAA 09500's . NOAA 09400's . NOAA 09300's .

... F. Rodionova and E. A. Kozlova . ... Sternberg State Astronomical Institute, 119899, Moscow, Russia; jeanna@sai.msu ru. ... Brown University - Vernadsky Institute Microsymposium 34, October 8-9, 2001, Moscow, Russia . ... Brown University - Vernadsky Institute Microsymposium 38, October 27-29, 2003, Moscow, Russia . ... Brown University - Vernadsky Institute Microsymposium 40, 2004, Moscow, Russia . ... 1 Sternberg State Astronomical Institute Lomonosov Moscow University, Russia; marss8@mail.ru . ...