... IONOSPHERIC DATA IN THE INTERACTIVE SPIDR SYSTEM . ... The Ionosphere The ionosphere is that part of the upper atmosphere where free electrons occur in sufficient density to have an appreciable influence on the propagation of radio frequency electromagnetic waves. ... These regions may be further divided into several regularly occurring layers, such as F1 or F2. ... E Region: The region between about 95 and 150km above the Earth that marks the height of the regular daytime E layer. ...

Twilight observations with MASS/DIMM B. Safonov Sternberg Astronomical Institute Moscow State University Comprehensive Characterization of Astronomical Sites, 2010 B. Safonov (Moscow State University) Twilight observations with MASS/DIMM SITE 2010 1 / 17 Why observe in twilight with MASS/DIMM? ... ASM includes 3 devices sensitive to background: guider, DIMM and MASS. B. Safonov (Moscow State University) Twilight observations with MASS/DIMM SITE 2010 2 / 17 Background in guider. ...

... Main page News People . ... Master net Homepage . ... SAI MSU 20-21 March 2014 . ... Zel'dovich asteroid . ... YaB-100 conferences . ... Science committee: . ... E.S. Gorbovskoy (SAI MSU) . V.M. Lipunov ( chairperson, MSU, SAI) . G.V. Lipunova (SAI MSU) . ... M.V. Pruzhinskaya (SAI MSU) . A.M. Cherepashuk (MSU, SAI) . N.V. Tyurina (SAI MSU) . N.I. Shakura (SAI MSU) . ... The conference is organized by the Zel'dovich Moscow Astrophysics Seminar ( master.sai.m su.ru/osa/ ) . ...

... 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. ...

Isaak Newton (1642 - 1727). ... During 1665 - 1667 Newton made his three main discoveries: the method of fluxings and quadratures (differential and integral calculus, explanation of the light nature and the law of gravitation). ... In 1668 Newton built the first reflecting telescope. The big lens telescope gave indistinct image with painted edges. ... The scientist considered this problem indisolved and suggested a mean against chromatic aberration: a mirror must be used instead of objective lens. ...

. All images Copyright by Vasiliy V. Rumyantsev , 1998 . For personal viewing only. If you have any questions or suggetions or if you want to use these images contact me . Page created: 28 December 1998 . Last update: 23 Sept. 1999 .

... EUV Observations of the Solar Corona with Superhigh Spatial Resolution in the ARCA Project S. V. Kuzina, S. A. Bogacheva, A. A. Pertsova, S. V. Shestova, A. A. Revaa, b, and A. S. Ulyanova, b a Lebedev Physical Institute, Russian Academy of Sciences, Moscow, 119991 Russia b Moscow Physicotechnical Institute, Moscow, 115409 Russia e mail: kuzin@lebedev.ru Abstract--Observing the Sun's hot corona with sub second spatial resolution is important in solving a num ber of basic solar physics problems. ...

Abstract -- Calculations are performed for the circular polarization of maser radiation from a turbulent, Keplerian disk that is intended to represent the sub-parsec disk at the nucleus of the galaxy NGC4258. ... This turbulence, along with the Keplerian velocity gradients and the blending of the three hyperfine components to form the 6 16 --5 32 masing transition of water, are key ingredients in determining the appearance of the polarized spectra that are calculated. ...

Клуб Скептиков] [Конференция] . ... Хеймдалль : re: Насчет материализма . ... Юрий Тихонравов Скептицизм и атеизм Alex re: Скептицизм и атеизм 23-Июн (10:02) Юрий Тихонравов re: Скептицизм и атеизм 23-Июн (10:20) Alex re: Скептицизм и атеизм 23-Июн (10:40) Юрий Тихонравов re: Скептицизм и атеизм 23-Июн (11:02) Alex re: Скептицизм и атеизм 23-Июн (12:06) Юрий Тихонравов re: Скептицизм и атеизм (+) 23-Июн (13:02) Alex re: Скептицизм и ...

Электронная библиотека астронома-любителя. ... библиотека . архив RSN . ... Ru.Space.News: . Октябрь 1998 . ... 5, 1998 Greenbelt, MD 20771 Newsroom Phone: 301-286-8955 NOTE TO EDITORS/NEWS DIRECTORS: 98-158 HISTORIC JOHN GLENN FLIGHT TO FEATURE MARYLAND AND GODDARD SCIENCE EXPERIMENTS When Mercury astronaut and Ohio Senator John Glenn returns to space October 29, a fascinating array of science experiments from the Goddard Space Flight Center and Maryland students will fly with him. ...

... In accordance with assignment she was sent to Nikolaev branch of the Pulkovo observatory. At the Nikolaev Observatory Eugene Khrutskaya worked with the meridian circle, she made a lot for automatization of observational process, and in 1973 she created the catalog of right ascensions obtained for more than 6000 stars, and she defended her thesis. ... From 2004 to the present, Evgenia Khrutskaya was Head of the Laboratory of astrometry and stellar astronomy. ... Pulkovo observatory . ...

... VaST is a software tool for finding variable objects on a series of astronomical images. ... VaST performs object detection and aperture photometry using SExtractor on each image, cross-matches lists of detected stars, performs magnitude calibration with respect to the first (reference) image and constructs a lightcurve for each object. ... VaST FITS image viewer ./pgfv . ... Part I" PZP, vol. ... K. V. Sokolovsky, S. A. Korotkiy; "New Variable Stars Discovered by the NMW Survey" PZP, vol. ...