... The spectrum of the brightest star, our Sun, shows several dark gaps perpendicular to the flow of it’s colours (figure 1). These so called spectral absorption lines where discovered in 1802 by the English scientist William Wollaston. ... Some stars as Pollux show a spectrum similar to that of our sun with strong Ca II and Fe II lines, others as Sirius or Vega show strong absorption lines of hydrogen, others, as Mira show very complicated spectra due to molecular absorption lines (see figure 5). ...

Download Izmccd (~2.7 MB). ... If you want to calculate equatorial coordinates of object: . Click the " File " menu, and then click " Open " ; or press  on toolbar. Choose a file with image. ... Also see section " Viewing of image ". ... Before, if it is necessary, you must make an account dark current and flat field (See section " Preliminary processing of images ".) ... Measure the marked stars. ... Click the " Calculations " menu, and then click " Coordinates " or . ...

A&A 467, 991­1001 (2007) DOI: 10.1051/0004-6361:20066758 c ESO 2007 Astronomy & Astrophysics Metallicity and age gradients in round elliptical galaxies M. Baes1 , O. K. Sil'chenko2,3 ,A.V. Moiseev4 , and E. A. Manakova2 1 2 3 4 Sterrenkundig Observatorium, Universiteit Gent, Krijgslaan 281 S9, 9000 Gent, Belgium Sternberg Astronomical Institute, University av. ... We probe the stellar population age and metallicity distributions in nearby elliptical galaxies over the largest extension to date. ...

... Space activity at the beginning of XXI-st Century view from inside G.M.Chernyavskiy STC for Earth Space monitoring of FSUE , Russia 1. The systemic approach in astronautics Everyone who has linked his life with astronautics and those who are interested in the future of the inhabitancy medium and its expansion up to cosmic scales, are troubled about the current state and development of space activity in the World and in the Native Land of the first artificial Earth satellite (AES). ...

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... Есть также демонстрация технологии Lunar laser Communication Demonstration. ... 1М (космический аппарат) . ... 2МВ (космический аппарат) . 3МВ (космический аппарат) . ... AGILE (космический аппарат) . ... Dawn (космический аппарат) . ... Far Ultraviolet Spectroscopic Explorer . ... International Ultraviolet Explorer . ... Lunar Atmosphere and Dust Environment Explorer . Lunar Crater Observation and Sensing Satellite . Lunar Prospector . ... Прогресс М-01М . ... Союз (космический корабль) . ...

Statistics of sunspot activity . ... The solar regions . ... NOAA 11300's . ... The single sunspot with fine penumbra was crossed the Sun disc since 25.08 to 6.09 across the middle latitudes of the Northern hemisphere. ... The fine sunspots were observed at the 20th parallel of the Northern hemisphere since 27.09 to 2.10, in the Western part of the Sun disc. ... The fine sunspots were observed at the middle latitudes of the Northern hemisphere since 6.11 to 10.11, in the Western part of the Sun disc. ...

... General astronomy . ... PHYSICAL CONSTANTS.. ... Nobel Laureates in Physics 1901-2002 . ... Lectures Astronomy-161 "Solar System" (Also it contains info about History of Astronomy) . ... The History of Science . ... College-Level Astronomy Courses - at American, Australian Universities and Colleges . ... Messier: . ... Science . ... Scientific American . ... JOURNAL OF COMPUTATIONAL PHYSICS . ... Scientific Journals . ... American Physical Society Journals: Physical Review, Review of Modern Physics ...

ПЛАНЕТА ОЗИРИС . ... Озирис оказался первой экзопланетой, которая была исследована как с помощью метода доплеровской спектроскопии, когда измеряются небольшие смещения линий в спектре звезды, вызванные гравитационным влиянием планеты, так и с помощью наблюдения т.н. транзитов, т.е. проходов планеты по диску звезды. ... Озирис вращается вокруг звезды HD 209458 на расстоянии 0,045 а.е. или 6,75 млн км, что составляет менее 9 звездных радиусов. ... Озирис в Энциклопедии внесолнечных планет . ...

... Piotrovich Main Astronomical Observatory, Pulkovo, St. Petersburg, Russia Received May 24, 2006; in final form, July 7, 2006 Abstract--We have used two astrometric methods developed at the Main Astronomical Observatory of the Russian Academy of Sciences--the method of apparent-motion parameters (AMP) and a direct geometrical method (DGM)--to derive the orbit of the star S2 around the Galactic center, and thereby the mass of the supermassive black hole at the Galactic center. ... Relative positions. ...

The paper presents the 'Neptune-ME' information display system (IDS) as a spaceman console (SC) of the descent module of the 'Soyuz -TMA' piloted transport spaceship, and the integrated console (IC) of manual control loop for module equipment in the Russian segment of the 'Alpha' international space station. ... to control spaceship systems; . ... An integrated control console (ICC) which is hardware and software compatible with a IBM PC, is suggested as a basic console for the manual control loop. ...

The Second U.S. Naval Observatory CCD Astrograph Catalog ( UCAC2 ) Table of Contents 1) Introduction 2) Summary of the Project a) Observations and Instrumentation b) Reductions of UCAC Observations c) Computation of Proper Motions 3) Properties of the Catalog and Important Notes For the User a) Sky Coverage b) Completeness c) Positions, Proper Motions and Error Calculations d) UCAC2 Magnitudes e) 2MASS Photometry f) Non-stellar ... All stars in the UCAC2 have proper motions. ...

... A rough estimation is that in the United States there is one planetarium per 100,000 population, ranging in size from the Hayden Planetarium's 20-meter dome seating 430 people, to three-meter inflatable portable domes where children sit on the floor. ... Together dblo associates make a huge impact in the architecture, interior design and development arena in London. ... With the holidays around the corner what better way to spoil your family than with your very own private home cinema. ...