NATIONAL ASTRONOMY AND IONOSPHERE CENTER . ... Astronomy . ... Visitor Center . ... Optical . Lidar . At Arecibo we have a variety of optical instruments that we use to study terrestrial airglow emissions. ... This equipment is located in our Optical Laboratory, which is on site about 1000 feet from the center of the incoherent scatter radar. ... The various observational modes that are available are described in supplementary documentation for the Arecibo Observatory Optical Laboratories. ...

NGC 6888: X Rays in the Wind . ... X-ray; CXO / NASA , Optical; SDSU / MLO Explanation: NGC 6888, also known as the Crescent Nebula , is a cosmic bubble of interstellar gas about 25 light-years across. ... Still, NGC 6888 seems to have accomplished this as slow moving winds from the central star's initial transition to a red supergiant were overtaken and rammed by faster winds driven by the intense radiation from the star's exposed inner layers. ... NASA Official: Jay Norris. ...

MAGION 5 is subsatellite of the Auroral Probe, one of the satellites of the INTERBALL program. ... Click hear for the 1999 flight situation analysis during operations scheduling . ... The satellites motion calculation during the flight situation analysis is based on the orbital elements determined by the Institute of Atmospheric Czech Academy of Sciences. ... SSC GSFC NASA Satellite Situation Centre of the NASA Goddard Space Flight Centre . ... Space Research Institute (IKI) . ... IKI RAN | ...

... Astronomy in Ukraine Past, Present, and Future (MAO-2014) . ... of the Main Astronomical Observatory of the National Academy of Sciences of Ukraine . ... НАН Укра?ни, академ?ку Яцк?ву Я.С. Вельмишановний Ярославе Степановичу! ... Ректор Нац?онального г?рничого ун?верситету, академ?к НАН Укра?ни . ... Сердечно поздравляю Вас, коллектив ГАО НАНУ с 70-летием ГАО НАНУ! ... ГАО НАН Укра?ни. 17 июля исполняется 70 лет со дня основания Главной астрономической обсерватории НАНУ в Киеве. ...

... Educational programs (English) . Educational programs (Russian) . ... Pre-university education . ... SSAU History . SSAU roadmap . ... The International Educational Exhibition AULA-2015 was held in Madrid from the 4th to the 8th of March. ... Samara State Aerospace University named after academician S. P. Korolev was represented at the exhibition by Ilya Kudryavtsev, Dean of the Faculty of Radio Engineering and Olga Klenkina, Assistant Professor of the Department of Social Systems and Law. ...

... Identification and Analysis of Binary Star Systems using Probability Theory E. Grocheva and A. Kiselev Photographic Astrometry Department, Pulkovo Observatory, S.Petersburg, 196140, Russia, Email: gl@spb.iomail.lek.ru Abstract. Accurate identification of physical binary star systems has become of increasing interest in recent years. ... We chose 76 double stars from Pulkovo's observation program and calculated the probabilities of a random distribution for these pairs. ...

... Bojan Nikolic web pages (r. 329) . Galaxy Evolution . ... The analysis of the radio spectra presented in this paper was made using the radiospec package, version 1.0. This version of radiospec has facilities for modelling spectra with multiple components including synchrotron, high-opacity free-free and spinning dust. Anomalous dust emission in NGC 6946 . ... Paper II: Spinning dust in galaxies . ... Paper I: Method . ... Copyright 2005 -- 2016, Bojan Nikolic feedback welcome ...

... Catalog . ... The catalog of clusters of galaxies presented in Tundo et al. 2012 , detected from the GRB follow-up fields of XRT archive, containing 72 galaxy clusters with soft net counts > 100. View the catalog and images . ... The tables presented in Tozzi et al. 2013 in preparation . View the redshift information of catalog I . View the X-ray spectra information of catalog I . ROSAT 400d . ROSAT MACS . ROSAT WARPS . ROSAT REFLEX . ... XMM XCS . XMM LSS . ...

II-VI compound crystal growth, HPVB & HPVZM basics . ... Developed and first time applied for II-VI compound crystal growth in our lab back in late sixties [1]. ... Basics . The II-VI compounds have particular physical-chemical properties that present a challenge for the crystal growth. ... In the general case of II-VI compounds and HPVB growth conditions: . ... These peculiarities of composition stipulate another problem of the II-VI compound crystal growth from the melt - "bubbles". ...

... Home Gallery Club Events AAA president Marcelo Cabrera presents AAA Amateur Astronomers Medal to Al Nagler of TeleVue Optics with AAA vice-president Susan Andreoli. ... A History of the First Forty Years of the Amateur Astronomers Association . ... AAA president Marcelo Cabrera presents AAA Amateur Astronomers Medal to Al Nagler of TeleVue Optics with AAA vice-president Susan Andreoli. by . ... 2016 Amateur Astronomers Association of New York Designed by Press Customizr Powered by . ...

... CBET now has an M31 novae page , M33 novae page , and an M81 novae page . ... Also, see W. Pietsch's M31 (apparent) optical nova catalogue , M33 novae catalog , and M81 novae catalog Please note that I do not keep track of galactic novae . Nova M81 2016-04a? (= PNV J09560598+6900401 ), ATEL 8904 discovered 2016/04/02.876 by Kamil Hornoch and H. Kucakova . ... Nova M31 2016-03a? (= PNV J00421695+4059098 ), CBAT TOCP discovered 2016/03/01.721 by unknown . ... other extragalactic Novae from 2016 . ...

... Document Title | Document Number | ... The code uses fields: category, system, subsystem, EMA, vendor, and a sequential number. ... Previous Document Number This is a TEXT field and represents the document number that preceeds the found document in the set of original documents supplied by the engineer/vendor. ... Next Document Number This is a TEXT field and represents the document number that follows the found document in the set of original documents supplied by the engineer/vendor. ...

... Gravity data reflect changes, related to the groundwater redistribution, ice melting, and precipitation accumulation. ... We apply Multichannel Singular Spectrum Analysis (MSSA, or extended EOF) technique to filter GRACE data and separate the principal components (PCs) of different periods. We performed data averaging over the large river basins of Russia. ... Fig 1. ... MSSA is a promising method for GRACE data processing, de-striping, filtering, and Principal Components (PCs) separation. ...

SPECTRUM ANALYZER OF MAGNETIC PHENOMENA SAMW . Spectrum analyzer allows onboard computation of electromagnetic waves spectra registered (observed) in the ionosphere and magnetosphere in the ELF/VLF frequency band. ... It consists of magnetic antenna, preamplifier, 16 bit sigma delta AD converter, DSP processor and telemetry interface. ... The channels of lower frequencies are averaged and transmitted with lower repetition rate so the telemetry volume is reduced. ... Dynamic range: 90 dB . ...

... Space flight . ... Space Hotel . ... The program of deployment of small orbital station (SOS) consisting of a family of spacecrafts and module-spacecrafts represents a consecutive realization of flight scenarios with consecutive building up of functions. ... Scenario 1 - the regular and revised spacecrafts of class "Soyuz" - TMSC and MNMSC (MNMSC-cargo, MNMSC-MR) are used, pls. see fig fig.8 . ... The terms of transition to this scenario are determined by terms of readiness of one or another module....

Preface The necessity of the preparation and edition of such intricate publication, that is the printed version offered to the reader, of geoinformation system including the chronological catalogue and evolutionary database of the global tropical cyclogenesis is dictated, in opinion of the authors, whole number of objective circumstances. ... It derivates the serious dissensions in the initial ('raw') information as well as in databases and archives of regional cyclogenesises. ...

. S - slit unit; . M1, M2, M3 - collimator's mirrors; . E - mosaic echelle; . G - cross dispersion grating; . O - camera; . D1 - CCD.

The properties of the midplanes of planet-forming protostellar disks remain largely unprobed by observations due to the high optical depth of dust and commonly observed molecules. However, rotational emission lines from rare molecules may have optical depths near unity in the vertical direction, so that the lines are strong enough to be detected, yet remain transparent enough to trace the disk midplane. In this talk, I will present a chemical evolution model of an MRI-active T-Tauri disk. ...

We present a course giving an overview of basic algebraic structures. It is an essential part of mathematical education in general; besides, our experience shows that it also provides motivation to specialize in algebra. Symmetric group. ... Rings and ideals. ... Fields. ... Finite fields. Algebras. ... Matrix algebra. ... Grassmann algebra. ... D.S.Dummit, R.M.Foote, Abstract Algebra. Robert B.Ash, Abstract Algebra: The Basic Graduate Year. Copyright ї1996-2013 MCCME ...

... Spectra obtained with the 6-m telescope of SAO RAS are used along with archival data from Spitzer and several ground-based telescopes to infer a strength of PAH emission, age, properties of the UV radiation field, and metallicity of studied HII complexes. Physical properties (age, radiation field parameters, metallicity) are related to the F 8 /F 24 ratio used as a proxy for the PAH abundance in order to reveal factors that may influence the PAH evolution in HII complexes. ... Projects | ...