From Herschel's catalog, the first accurate stellar parallax measurement of 0.32 seconds of arc for the star 61 Cygni was published by the F.W. Bessel in 1838. ... This distance is equivalent to 3.26 light years. ... The Universe was now a large place and the intrinsic energy output of the stars had to be huge in order that their light could reach us. ... An Orbit in Curved Space This is a prediction made by General Relativity and confirmed by direct observation of Mercury. ...

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• Astronomy Plus CCD Images of Galaxies
• Physics 410/510 Observational Cosmology

... We have developed an integrated system that performs astronomical observations in Near Infrared bands operating two-dimensional instruments at the Italian National Infrared Facility's ARNICA and LONGSP . ... The user interface is organized as widget-based X11 client. ... 1993; Di Giacomo et al. 1993). ... Moreover, if the interprocess communication interface includes support for networking, the software immediately becomes network distributed software. ... DESQview/X User Guide 1993, Quarterdeck . ...

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• Calculating the Position and Velocity Components of HST

... With a redshift of 2.3, the IRAS source FSC 10214+4724 is apparently one of the most luminous objects known in the Universe. ... The most straightforward interpretation is that FSC 10214+4724 is gravitationally lensed by the foreground elliptical galaxy, with the faint component a counterimage of the IRAS source. ... The background lensed source has an intrinsic luminosity , and remains a highly luminous quasar with an extremely large ratio of infrared to optical/ultraviolet luminosity. ...

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• HST Spectral Maps of Accretion Disks in Cataclysmic Binaries
• HST this week: 301
• Hubble Space Telescope Observations of Globular Clusters in M87 and an Estimate

Main Program Travel Where to go in Moscow Information . ... The 2014 year marks the 100th anniversary of Yakov Zeldovich . ... John Carlstrom (University of Chicago) . ... Lyman Page (Princeton University) . ... The conference will be held at the Space Research Institute (IKI) in Moscow, Russia, on June 16-20, 2014 . ... International Conference: Cosmology and High Energy Astrophysics (Zeldovich-90) 20-24 Dec 2004, Moscow, Russia . ... 2014 Space Research Institute, Moscow Русская версия ...

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... Mokhovaya st., 11, Moscow, 103907, Russia. Email: chaos@mail.cplire.ru . Proceedings of the 5th IEEE International Specialist Workshop on Nonlinear Dynamics of Electronic Systems, Moscow, Russia, June 26-27, 1997 , pp. ... In this report we discuss the ways for realization of code-division multiple access (CDMA) systems based on dynamic chaos. ...

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• Multiple access communication - COC-2000
• Radar Investigations of Comets
• Six-Centimeter Radar Observations of 4179 Toutatis

... Science . ... Data Handling and Products > Data Reduction FAQ > The calibration data for my observations look strange. Can you confirm that they look as the are supposed to look? ... Science Users Information . Observing Facilities . ... Paranal Facilities . La Silla Facilities . ... Observing with ESO Telescopes . ... Data Pipelines and Calibrations . ... Science Data Products Forum . ... Science Archive Facility . ... ESO Data . ... ESO Data Access Policy . ... ESO Science Newsletter . ...

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• ArtistтАЩs impression of ALMA observations of a gravitationally-lensed
• Interferometric observations: Change of fringes with increasing baseline | ESO
• A Black Hole's Dinner is Fast Approaching | ESO

An Ancient Universe: How Astronomers Know the Vast Scale of Cosmic Time . ... Astronomers can also determine the speed a galaxy is moving by breaking up its light into its component colors, rainbow-fashion. ... This pattern is now called "the expanding universe", since the entire universe of galaxies seems to be moving away. ... The Ancient Universe - The Age of the Expanding Universe - The Age of the Oldest Stars - The Age of Light From Distant Galaxies - The Age of the Chemical Elements | ...

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• ASP: Star Science in the Autumn Sky
• ASP: The Biggest Bang of Them All
• ASP: The Goddess of Love & the Hand of God: American Observations of the 1769

FOR IMMEDIATE RELEASE EXPReS conducts first real-time e-VLBI observation with telescopes in Africa, Europe, North America and South America Dwingeloo, the Netherlands (23 May 2008) - Yesterday, members of the EXPReS project (Express Production Real-time e-VLBI Service) conducted a live demonstration of the first ever real-time, electronic Very Long Baseline Interferometry (e-VLBI) observations to simultaneously use telescopes in Africa, Europe, North America and South America. ...

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• New Results Confirm Dark Galaxy Existence
• The Evolution of Galaxies Seen Through The Neutral Hydrogen Line The Evolution
• REU Science Area

... Imaging spectrometer for atmosphere and ionosphere spectral investigation consist the static Michelson interferometer and CCD camera. The prototype of the onboard CCD camera for the spectrometer used the Toshiba 2048 pixels CCD linear array (TCD 1201D) with FPGA-based controller. The controller is building on ACTEL A1020A field programmable gates array with maximum data rate 40 MHz and can be used with linear and area array CCD. ... Toshiba CCD Linear Image Sensor Data Book, 1997. ...

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• Optical static Fourier spectrometer
• A computer controlled low light photometer for nightglow observations
• Extragalactic Astronomy

True Color Image Gallery: Galactic SNR | ... Distance: 8.5kpc(distance to galactic center) . ... Radio . ... Radio Images Page . ... Exposure uf . ... Exposure uf Exposure time of unfiltered event file . Exposure f Exposure time of filtered event file . ... radio image obtained 12 year before X-ray . ... N H = 3.9(10 22 cm -2 ) Assumed distance: 8.5kpc (distance to galactic center) . see fit detail page for more about the fit. see chandra spectrum page for region used. ... Radio Images . ...

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• The AstroStat Slog distance estimation
• Chandra Images for SNR J0550.4-6823
• X--ray Activity and PMS Stars.

MRO Delay Line ICD Delay Line to Metrology System ICD INT-406-VEN-0010 The Cambridge Delay Line Team rev 0.1 10 August 2007 Cavendish Laboratory JJ Thomson Avenue Cambridge CB3 0HE UK 1 ICD Description Sub-systems Delay line Metrology system Org UoC Owner MF Brief description and preliminary contents Defines the opto-mechanical and electronic interfaces between the delay lines and the metrology system. ... This ICD describes the interface between the delay line pipes and the metrology system. ...

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• G332.4-0.4
• G315.4-2.3
• G320.4-1.2

... ATNF Home . About ATNF . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Murchison Radio-astronomy Observatory . ... Parkes radio telescope . ... Mopra radio telescope . ... Visiting Parkes radio telescope . ... Parkes radio telescope webcam . ... The astronomical technique of gravitational microlensing provides new opportunities to make measurements which are difficult or impossible by other methods, or which are complementary to those obtained more directly. ...

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• Observations and Results
• ATNF Colloquium
• Archive of VLBI Observations Majordomo List

Ground Support of RadioAstron . Control and Tracking Stations . RadioAstron satellite control (command transmission, telemetry, orbit measurements) will be conducted from Evpatoria and Bear Lake control stations. ... Coarse orbit measurements will be carried out from control stations. Each measurement takes ten minutes. ... Orbit measurements at tracking stations give only radial component of spacecraft velocity but the measurements are going continuously during observing sessions. ...

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• GOCG Pre-Observation Products
• Contingency Plans

... General information . ... Staff . Research staff . ... Historical highlights . ... For education and public outreach, the Arcetri Astrophysical Observatory opens its doors to the general public by organizing guided visits with observations of the sky. ... The entrance for the daytime and nighttime visits to Arcetri Astrophysical Observatory is from Via Pian de Giullari, 16 In case there is a need to call or to ask for information on accessibility, please contact the number 055/2752280 . ...

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• The relationship between NSs and SNRs (Elba, June 1-4,1998)
• Lunar Occultation Group at AAO
• Arcetri Library Classification System

. A tree for site navigation will open here if you enable JavaScript in your browser. HOME . ABOUT ST-ECF . CONTACT . Maintained by Martin Kuemmel <mkuemmel@eso.org> .

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... Tutorial : Part 1 | ... Until a few hundred years ago, the Solar System and the Universe were equivalent in the minds of scientists, so the discovery that the Earth is not the center of the Solar System was an important step in the development of cosmology. ... In 1929 Hubble published a claim that the radial velocities of galaxies are proportional to their distance. ... The slope of the fitted line is 464 km/sec/Mpc, and is now known as the Hubble constant, H o . ... Ned Wright's Home Page . ...

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• Cosmology Tutorial - Part 4
• Cosmology Tutorial - Part 2
• Balloon Analogy in Cosmology

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. ...

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... Mathematical methods in physics . ... NUCLEAR PHYSICS . ... CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES . ... Mechanical and acoustical properties of condensed matter . ... Thermal properties of condensed matter . ... CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES . ... Electronic transport in condensed matter . ... Optical properties, condensed-matter spectroscopy and other interactions of radiation and particles with condensed matter . ...

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... Voronenko V.I., Gorel G.K. (1988) Photographic observations of Jupiter's and Saturn's satellites made in Nikolaev in 1983-1985. ... Year of the moment of observation 3. ... Hour of right ascension (alpha, h) 5. Minute of right ascension (alpha, m) 6. ... Degree of declination (delta, deg) 8. ... Second of declination (delta, '' ) ----------------------------------------------------------- N Year alpha delta sat month day JD h m s deg ' '' ----------------------------------------------------------- ...

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• Data bases of Natural Satellites. Documentation. Structure
• jo0028
• jo0027

... The sample of the Local Volume galaxies (distance smaller than 10 Mpc) gives a unique opportunity to study the properties of galaxies including the weakest objects: the absolute magnitude M B -10 and the virial mass M vir 10 9 M x263C;. ... Luminosity function of the Local Volume galaxies. ... The luminosity functions for galaxies are presented: red dashed line - from the 2dFGRS survey (Norberg et al. 2002); blue dash-dotted line - from the SDSS survey (Blanton et al. ...

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• RCJ0311+0507
• Electronic version of Russian Bulletin
• Large telescopes application form