Next: Principal Areas of Research Up: annrep Previous: Contents Contents . The Armagh Observatory, founded in 1790 by Archbishop Richard Robinson, is a modern astronomical research institute with a rich heritage. ... Overall, around 25 astronomers of graduate or postdoctoral status are actively studying Stellar Astrophysics, the Sun, Solar System astronomy, and the Earth's climate. ... The Armagh Observatory participates in the UK Research Assessment Exercise, held in 1992, 1996 and again in 2001. ...

The AstroGuide . ... AstroGuide | ... AstroGuide Listing . Login . See many more Astronomy Listings by: Category or Alphabet . ... Listed Since July 15, 1998 . Mauna Kea, HI . ... Web Site . ... However, you must Login to submit a comment. ... Web . www.astronomy.net . About Astronomy Net | ... Unless otherwise specified, web site content Copyright 1994-2016 John Huggins All Rights Reserved . dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . are trademarks of John Huggins ...

. . (MPIfR/ ), . . ( /MPIfR), . . (MPIfR//), . . (MPIfR) . . (1.4-15.4 ) VLBA 20 - . . 20 . >1 ~1 <1 () () . ~1 (). >1 ~1 <1 >1 ~1 <1 (1>2) 1 2 =1 - . VLBA 20 . 9 : 1.4-15.4 . NRAO's Very Long Baseline Array (VLBA) Image courtesy of NRAO/AUI and Earth image courtesy of the SeaWiFS Project NASA/GSFC and ORBIMAGE VLBA Lobanov (1998 A&A, 330, 79), () , , k=1 k k=0.98 +/-0.11, k=1. k 0952+179 k=2.7 +/-1.7 k=0.98 +/-0.11, k=1. 20 . 9 1.4-15.4 VLBA. . : 1 mas 1.4 5.0 , 0.2 mas 5.0 15 . ().

Впечатление художника о молекулярном диске, окружающем предполагаемую черную дыру в ядре галактики NGC 4258. ... Геометрия и динамика диска были аккуратно определены из наблюдений на интерферометре Very Long Baseline Array (VLBA), NRAO, США. ... Reprinted from: Proceedings of the Natinal Academy of Sciences. Vol.92, Number 5, December 5, 1995, by the National Radio Astronomy Obervatory with the permission of National Academy of Sciences. ...

. This is a new popup window - close it when you are done . Submitted by Paul Valleli on 01/16/2007 15:59:15 . 25 Meter Radio telescope . Down in the valley from McDonald Obs. is one 25 meter Radio telescope antenna of an array that stretches around the world for VLBI - very long baseline interferometer . Logon to post a follow-up comment or review comments from others . Copyright (c) Amateur Telescope Makers of Boston, Inc. About Us Contact Us

... Compact Extragalactic Jets. Radiointerferometry has played a crucial part in the studies of compact extragalactic jets during the last several decades. Submilliarcsecond resolution of Very Long Baseline Interferometry (VLBI) has enabled detailed studies of morphological, kinematic and spectral properties of radioemission from the jets. We will present a review of results from several latest VLBI studies of extragalactic jets. ...

RADIOASTROPHYSICAL DEPARTMENT • INSTITUTE OF SOLAR-TERRESTRIAL PHYSICS RAS SB . Radio telescope 's beam General information Main characteristics of the Radio telescope Observing programs General view of the antenna array Main research areas Principle of generation of radio images Receiving systems Main characteristics of the base receiving-recording complex Calibrations Data archive and databases Publication SSRT - Radio telescope's beam . ...

... In this paper, results are presented on studies which have been performed to investigate the impact of the cut-off elevation angle and elevation-dependent weighting on the EOP estimates and baseline length repeatability. ... He tested his method with the actual CONT05 observations. ... This gave an impulse to the present work where some results are presented of investigation of the impact of the CEA and EDW on the baseline length repeatability (BLR) and Earth rotation parameters (EOP) estimates. ...

... PROBLEMS: "Unknown" (i.e. no physics model) components; What's a "Good-Enough-Fit" (e.g. Poisson)? ... ASIDE: MULTI-SCALE FOR POISSON - called Multiplicative Multiscale Innovation Models MMI Slides courtesy of R.Willett, SAMSI 2006 Timmermann Nowak, 1999 Kolaczyk, 1999 ASIDE: MULTI-SCALE FOR POISSON - called Multiplicative Multiscale Innovation Models MMI Slides courtesy of R.Willett, SAMSI 2006 Timmermann Nowak, 1999 Kolaczyk, 1999 ASIDE: MULTI-SCALE FOR ...

... After all we cannot send a probe to the star Altair to confirm that it is 17 light years away. ... The "Bessel determined that the star 61 Cygni was about ten light years away" Earth goes around the Sun in one year, so in six month it is in the opposite position in its orbit. ... In 1838 Bessel determined that the star 61 Cygni had a parallax of 0.314 arcseconds and therefore the star was about ten light years away (today the distance is more precisely measured to be 11.4 light years). ...

Stellarium 0.12.3 . ... Plugins . ... FileљStructure . FileљList . FileљMembers . plugins . Satellites . src . gsatellite . sgp4unit.h . ... 7 љ * this file contains the sgp4 procedures for analytical propagation . 8 љ * of a satellite. the code was originally released in the 1980 and 1986 . ... Generated on Sat Aug 10 2013 17:12:43 for Stellarium by љ 1.8.3.1 ...

Title: The Celestial Reference Frame at 24 and 43 GHz. I. Astrometry Authors: Lanyi, G. E.; Boboltz, D. A.; Charlot, P.; Fey, A. L.; Fomalont, E. B.; Geldzahler, B. J.; Gordon, D.; Jacobs, C. S.; Ma, C.; Naudet, C. J.; Romney, J. D.; Sovers, O. J.; Zhang, L. D. Affiliation: AA(Jet Propulsion Laboratory, Caltech, 4800 Oak Grove Dr., Pasadena, CA 91109, USA ), AB(U.S. Naval Observatory, 3450 Massachusetts Ave., ... Median formal uncertainties at 43 GHz are 0.20 and 0.35 mas, respectively. ...

... Also the measured signals are a#ected by detector transients, altering the final results considerably. ... The sequence is bounded by two measurements of the FCS , to fix the responsivity for the baseline correction 0 200 400 600 800 1000 measurement time [s] 0.00 0.02 0.04 0.06 0.08 0.10 Volt/second bg source fitted baseline 2. FCS 1. FCS source initial drifting signal corrected signal bg FCS source background signal internal calibration signal source signal corrected ...

NIST Spetial Publication 500-220 . Guide on Open System Environment (OSE) Procurements . ... An Open System Environment encompasses the functionality needed to provide interoperability, portability, and scalability of computerized applications across networks of heterogeneous, multi-vendor hardware/software/communications platforms. ... The Open System Environment concept has become ubiquitous throughout both the public and private sectors. ... ACQUIRING AN OPEN SYSTEM ENVIRONMENT 11 . ...

... Bad Astronomy . ... Mad Science . ... Keep Bad Astronomy close to your heart, and help make me filthy rich. ... The name "parsec" is indeed a distance of 3.26 light years. ... First off, we need to know about "parallax". ... A great example is easy to show: hold a thumb up in front of your face, about 20 centimeters away. ... That angle is called the parallax angle, and it depends on two things: how far apart your eyes are (the baseline ), and how far away your thumb is. ... 2008 Phil Plait. ...

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... Issue 7 -- Short Contributions AG 2005 Kln 1 Infrared Interferometry of the Seyfert Galaxy NGC 1068 G. WEIGELT 1 , Y. Y. BALEGA 2 , T. BECKERT 1 , W. J. DUSCHL 3 , K.­H. HOFMANN 1 , A. B. MEN'SHCHIKOV 4 , D. SCHERTL 1 , M. WITTKOWSKI 5 1 Max­Planck Institut fr Radioastronomie, Auf dem Hgel 69, 53121 Bonn, Germany 2 Special Astrophysical Observatory, Nizhnij Arkhyz, Zelenchuk region, Karachai­Cherkesia 357147, Russia 3 Institut fr Theoretische Astrophysik, Universitt Heidelberg, Albert­Ueberle­Str. ...