Trace: q3c-2011 . ... SAI VO Projects . ... Help on Wiki search . ... Title: Efficiently handling spherical data in Postgres . ... Abstract: Spherical data appear in a lot of problems in modern science and technology, ranging from geoinformational systems to astronomical catalogues. Efficient handling of such data in Postgres is necessary, and Postgres do have support for it, though not in core, through its ability to define fully indexable custom data types and functional indices. ... SAI VO | ...

... Henrietta Leavitt Calibrates the Stars . ... X Ray Moon . ... This x-ray image of the Moon was made by the orbiting ROSAT (R ntgensatellit) Observatory in 1990. ... SOHO, the space-based SOlar and Heliospheric Observatory, has become by far the reigning champion facility for discovering comets, its total having recently reached 200. ... Full Throttle For Deep Space 1 . ... The bright stars above are well known as heart of the Trapezium, an open cluster of stars in the center of the Orion Nebula. ...

System of astrometric databases of Pulkovo observatory. 26-inch refractor . Pulkovo system of astrometric databases consists of three databases, which contain results of processing photographic and CCD observations, obtained with the 26-inch refractor and the Normal astrograph of Pulkovo observatory. Pulkovo photographic catalogs: Pul-2, Pul-3 (Pul-3 SE), Pul ERS . Results of photographic and CCD observations of Solar system objects . ... Normal Astrograph ...

... The bright supernova (hereafter SN) in the galaxy NGC 4527 was first sighted by S. Knight (USA) on April 13.17UT at magnitude ~14.0v. The report of the sighting was subsequently forwarded by phone to the AAVSO. ... SN 1991T. The galaxy NGC 4527 is an Sb(s)II type galaxy with an apparent Blue magnitude of 11.32 (Shapley-Ames, 1981). ... An analysis of this event utilizing visual observations by amateurs, plus a light curve is presented.. ... THE LIGHT CURVE: . ... ISN SN 1991T web page . ...

... Future seminars . ... Influence of solar activity on wheat prices in the medieval England " . Dr. L. Poustilnik, Dr. G. Yomdin (Sea of Galilee Astrophysical Observatory, Jordan Valley College; Israel Space Weather Center, Israel Space Agency & Tel Aviv University, Israel ) . ... In the next step, we analyze a direct link between wheat prices and solar activity in the 17th Century, for which wheat prices and solar activity/cosmic ray intensity data (derived from 10Be isotope) are available. ...

Lisnyky observatory of A&SPD is located in the village of Lisnyky in Kyiv region. AZT-8 (right) Diameter 0.7 m, Newton, Cassegren. ... Spiral jets of comet Hale-Bopp have been observing on the 3-rd of April, 1997 with 70-cm reflector and image intensifier, time of exposure: 1 second, field of vision: 1.5 minute of arc. This color image was obtained with Fuji color film (Super Plus 400) in focal plane of the 70-cm reflector (F = 27 m) at Lisniki Observatory by A.M.Evtushevsky. ...

RADIOASTROPHYSICAL DEPARTMENT • INSTITUTE OF SOLAR-TERRESTRIAL PHYSICS RAS SB . ... SSRT - Receiving systems . The SSRT has two independent receiving systems for recording solar observational data, and several ancillary receivers for checking, setting up and adjusting the instrument. The base receiving systen is a multichannel filter receiver for a simultaneous recording in 180 channels with the 500 kHz band each, adjusted at steps of about 600 kHz. ... Channel's band . ...

Chandra X-Ray Observatory CXC 1. ... E0102: Joint Fits with ACIS S3, MOS1/2 & pn Paul Plucinsky, Joseph DePasquale, & Steve Snowden Paul Plucinsky 1 EPIC Cal April 2007 Chandra X-Ray Observatory 1. ... E0102: Gratuitous Pretty Pictures of E0102 S3 Summed Data ~100 ks CXC RGS Spectrum (Pollock 2006) Objective: develop a spectral model which can be used by RGS, HETG, EPIC & ACIS, etc. ...

Find Similar Abstracts . ... Giant voids in the universe . ... ASTRONOMICAL MODELS, GALACTIC CLUSTERS, GALACTIC EVOLUTION, GALACTIC STRUCTURE, SPATIAL DISTRIBUTION, UNIVERSE, ADIABATIC CONDITIONS, COSMOLOGY, MASS DISTRIBUTION, NEUTRINOS . ... Use: Authors Title Abstract Text Text Query with Keywords Return: Query Results Query Form Database: Astronomy Instrumentation Physics and Geophysics ABSTRACT QUERY USER FEEDBACK HELP ...

... Contact A Problem of an estimation of accuracy of the asteroid CCD observations . The Minor Planet Center supported by the Interntional Astronomical Union is the main office for keeping observational data of the small Solar System bodies and their investigations. ... At Pulkovo Observatory we are estimating an accuracy of the CCD asteroid observations obtained by amateurs and professional astronomers all over the World using the MPC database. ...

... The NICMOS Parallel Program . Analysis . ... NICMOS observations made in parallel with the other HST instruments have produced an archive of over 2,000 images, covering a wide range of Galactic latitudes. ... The maximum sensitivity of these images is approximately 0.1 Jy, which should allow the detection of such astrophysically interesting sources as brown dwarfs in the solar neighborhood and star-forming galaxies out to z 3. ...

... 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. ...

The AstroGuide . ... AstroGuide | ... Other Sites . ... AstroGuide Listing . ... See many more Astronomy Listings by: Category or Alphabet . The observatory is open to the public. Information is available on web site or by telephone. ... Listed Since February 16, 1999 . ... 651) 690-6023 . ... 651) 690-6024 . Web Site . ... Web . ... Unless otherwise specified, web site content Copyright 1994-2016 John Huggins All Rights Reserved . dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

Optical Observatories . ... National Optical Astronomy Observatories . ... Adam Mickiewicz University - Astronomical Observatory . ... Astronomical Institute and National Observatory of Athens . ... Jagiellonian University Astronomical Observatory - Scientific research here comprises radio and extragalactic astronomy, solar radio emission, active galactic nuclei, interstellar matter, galaxies, cosmology, variable stars and comets. ... National Radio Astronomy Observatory Home Page . ...

GRANAT is the Russian x-ray sattelite launched to the high apogee orbit (200,000 km) and operated almost for 10 years (1989 -1999) , carrying out four major instruments: French SIGMA coded-mask hard x-ray telescope (30-1000 keV), Soviet ART-P coded-mask telescope (2??-60?? keV), all-sky monitor WATCH (6-150 keV), and a gamma-burst detector PHEBUS . ... Since September 1994, GRANAT is in the survey mode. ... Explore pages devoted to individual GRANAT instruments (including main scientific results): . ...

. Clyde Tombaugh and the blink comparator . Clyde Tombaugh compared photographic plates taken in Percival Lowell's designated Planet X search area using the blink comparator. One year and two days after observations began, Tombaugh spotted Pluto. Courtesy Lowell Observatory

... In this program there will be no charts in which to compare starfields or conduct magnitude comparison star photometry. The latter information will hopefully be made available once an event has been sanctioned by the IAU as being a bonifide event. ... NOTE: The Astronomical Society of the Pacific has just come out with a further scaled down version of the Digitized Sky Survey that is currently available (10X version). ...

... Fall 2001 . ... With heavy water as its target medium the Sudbury Neutrino Observatory (SNO) is designed to study solar neutrinos by measuring both the total flux of 8B neutrinos through the neutral-current interaction as well as the electron-type neutrino flux via charged-current dissociation of deuterium. By comparing the electron neutrino flux to the total solar neutrino flux, SNO can make a unique study of the solar neutrino deficit and a model independent test for neutrino oscillations. ...

Crater Gassendi . ... I made this drawing was made on the 26th of november 2001. If you compare this one with the previous drawing of Gassendi (below) the differences are clear. ... This drawing was made on the 28th of september 2001. After nearly a full month without observations I had a one hour gap between the thicker clouds. ... This drawing was made on the 29th of august 2001. ... This drawing was made on the 27th of august 2001. ... This drawing was made on the 25th of august 2001. ...