Authors: V.A. Marsakov , Yu.G. Shevelev , . Journal: 1988, Astron Zh. ... Absolute magnitudes, metallicities, effective temperatures, surface gravities, distances, and tangential velocities are calculated for 5498 F stars with homogeneous data on uvby photometry and proper motion, and placed within 80 pc from the Sun. Components of space velocities, eccentricities of galactic orbits, perigalactic and apogalactic distances, and maximal remotness from galactic plane are presented for 1787 stars. ...

Radio Interferometry Principles . Radio Interferometry Signal Processing . ... A radio interferometer consists of a pair of directional antennas that are tuned to receive radio emissions from a source in a desired RF band. ... The antennas are pointed at the radio source of interest and are set up to receive the signal and process it into a form suitable for transmission to the correlator. ... In connected element interferometry, the digital signal goes directly to the correlator. ...

... 1944-1946) PRE- NASA CAREER: Tufts University, Medford, Massachusetts Research Assistant, Piezoelectricity Instructor, Physics (1946-1947) National Advisory Committee for Aeronautics, Langley Memorial Aeronautical Laboratory, Hampton, Virginia Research Engineer, Instrumentation (1947-1948) Minneapolis-Honeywell Regulator Company, Minneapolis, Minnesota Electronics Engineer, Industrial Instrument Division (1950) Hastings Instrument Company, Hampton, Virginia ...

... For more distant stars we must use other techniques. ... Hence if we see a distant galaxy and can pick out any cepheids lying within it, we can calculate its distance. ... Here then is another method to gauge the size of the Universe and there are yet more. volume at high enough temperature a nuclear fusion reaction sweeps across the white dwarf's surface and eventually we will see a spectacularly bright new star (hence nova) in our skies. ... Why is this relevant to the size of the Universe? ...

Общая Астрономическая Конференция > Все про астрономическое оборудование > Обзоры астрономического оборудования > Orion AccuFocus Electronic Focuser . ... Просмотр полной версии : Orion AccuFocus Electronic Focuser . ... Все идеально подошло к моему телескопу Celestron C8-N (оно и не удивительно, так как Orion продает под своей маркой телескопы производства Synta и Celestron). ... 31.03.2006, 10:05 . Коробка с кнопками маловата. ...

... and on-board accelerometer . ... All these peculiarities of high-orbit SVLBI can be used to increase the sensitivity (longer possible integration time for a given UV-point) and the accuracy of measurements of position of radio sources. ... In this Memo we consider the advanced methods of ground radio telescopes and tracking stations (TS) operation, on-board H-maser frequency standard (SHM - already planned for the mission) and high-accuracy on-board accelerometer applications to solve this objective...

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... Bad Astronomy . ... Mad Science . ... The Nine Planets . ... Keep Bad Astronomy close to your heart, and help make me filthy rich. ... Area of science: Astronomy . ... Yes, you can use a black hole to slingshot a rocket. The slingshot effect we use to accelerate space probes works by approaching a planet ``from behind''; that is, it approaches the planet in the same direction the planet is moving around the Sun. ... 2008 Phil Plait. ... Subscribe to the Bad Astronomy Newsletter! ...

New GCVS Versions for Three Southern Constellations Peremennye Zvezdy (Variable Stars) 27, No. ... We are currently working on a version of the General Catalogue of Variable Stars (GCVS) revised taking into account the new data accumulated since the 4th GCVS edition. ... It will contain all stars of the 4th GCVS edition plus a complete catalogue of the stars added to the GCVS in the Name Lists of Variable Stars Nos. ...

... Expected NICMOS Performance after HST Servicing Mission 3 . NICMOS Cooling System Design . ... NASA is developing the NICMOS Cooling System (NCS) to provide operation of NICMOS beyond the exhaustion of its stored solid nitrogen cryogen. ... The NCS combines an external radiator identical in design to the ACS/STIS Aft Shroud Cooling System (ASCS) planned for SM3, a Creare, Inc. reverse-Brayton cycle turbine cooler, and an EVA installed neon loop to the NICMOS dewar's cooling coil. ...

... 39, No. 7, pp. 538­544. i Dependence of the Solar Wind Speed on the Coronal Magnetic Field in Cycle 23 N. A. Lotova* and V. N. Obridko Pushkov Institute of Terrestrial Magnetism, Ionosphere, and Radio Wave Propagation (IZMIRAN), Russian Academy of Sciences, Troitsk, Moscow oblast, 142190 Russia Received December 10, 2012 Abstract--The dependence of the position of the solar wind sonic point on the magnetic field in the solar corona during cycle 23 is studied. ... The dependence of Rin on |B | ...

Эта эмблема была разработана для экипажей корабля OV 101 Enterprise, на котором в 1977 году проводились испытательные полеты (Approach and Landing Test) в атмосфере при сбрасывании с самолета Boeing-747 на высоте в 25000 футов (7 620 м). Эмблема представляет собой круг, сочетающий в себе синий, белый и красный цвета - основные цвета американского флага. На красном треугольнике, обращенном острой вершиной вверх, символизируя стремление в космос, помещено изображение шаттла Enterprise. ...

... Because you are a newly created organization, we are not now making a final determination of your foundation status under section 509(a) of the Code. However, we have determined that you can reason-ably be expectqd, to- be a pubricly supported organization described sectiongn in )WCl), t futCl lr[1o U-10 Accordingly, you will be treated as a publicly supported organization, and not as a private foundation, during an advance ruling period. ...

THE PHOTOMETRIC RESEARCHS OF THE MERCURY'S SURFACE BY MEANS OF DIGITAL MODELS. ... The surface brightness of Mercury was measured Danjon (1933, 1949, 1953) and Harris (1961) in phase angle 3o-123o. The analysis of the various data of the integral photometric gives the results of determination of the main photometric constants for Mercury. ... THE PHOTOMETRIC RESEARCHS OF THE MERCURY'S SURFACE: S.G. Pugacheva The surface brightness of the Mercurian images was established on the geologic map Mercury. ...

When Apache starts, it connects to some port and address on the local machine and waits for incoming requests. By default, it listens to all addresses on the machine, and to the port as specified by the Port directive in the server configuration. ... There are two directives used to restrict or specify which addresses and ports Apache listens to. ... Listen can be used to make a single Apache server listen to more than one address and/or port. ... Syntax: Listen [ port | IP-address:port ] . ...

... Schools . ... Dean?s Office . Departments . ... Artificial Intelligence and Interactive Systems Department . Electronics and Control Systems Department . Systems and Technologies Modeling Department . Theoretical and Applied Systems Engineering Department . Department of information systems and technologies security . ... School of History . ... Ancient and Medieval History Department . ... Ukrainian History Department . ... University History Museum . ... School of Physics . ...

STEP INTO THE BLUE - MEADE INSTRUMENTS PRODUCT GUIDE . ... Telescopes . LX850 Series . ... Meade's revolutionary LS LightSwitchтДв series of telescopes use advanced technologies to do what no other consumer telescopes have done before: take all the hassle out of using a telescope. ... Coronado Accessories . ... Photography Accessories . ... Meade Zero Image Shift-Electronic Micro-Focuser . ... Meade Zero Image Shift-Electronic Micro-Focuser #07080 for the Meade LX200-ACF and Meade LS models. ...

... Space Contents 1-2 YEAR 3-4 MONTH 5-6 DAY 7-8 BLANK 9-12 N (THE NORTHERN HEMISPHERE aa DAILY VALUE ) 13-15 BLANK 16-19 S (THE SOUTHERN HEMISPHERE aa DAILY VALUE ) 20-22 BLANK 23-26 M1 (HALF DAILY VALUE OF aa INDICES FOR THE GREENWICH DAY ) 27-29 BLANK 30-33 M2 (SECOND HALF DAILY VALUE OF aa INDICES FOR GREENWICH DAY ) 34-36 BLANK 37-38 CC_OR_K (QUIET DAYS CLASSIFICATION) 39-41 MONTHLY MEAN DATA: Loacated after the last day of the month. ...

Modeling and studying RNA secondary structure EugХne Asarin LIAFA, CNRS & Univ. More questions and speculations than answers Motivating example: Classical Attenuation Regulation Transcription and Translation DNA AGCTGC Transcription and Translation Polymerase Gene DNA RNA Ribosome Amino Acids Transcription: DNA to RNA , done by Polymerase Translation: RNA to Amino Acids , done by Ribosome Gene Expression Gene DNA RNA Ribosome Amino Acids Gene expressed if ...

COSMOLOGY ACROSS CULTURES ASP Conference Series, Vol. 409, c 2009 J. A. Rubino-Martґ J. A. Belmonte, F. Prada and A. Alberdi, eds. ~ in, A New Test of Einstein's Theory of Relativity by Ancient Solar Eclipses GЁ oran Henriksson Department of Astronomy and Space Physics, Uppsala University, Box 515, SE-751 20 Uppsala Abstract. ... The Lunar Laser Ranging (LLR) of the distance to the Moon makes it possible to check if there is any significant deviation from Kepler's third law of motion. ... 2002). ...