. General Information . Media Files . Participants . Timetable . Local Information . Photos . Back to the album list . Previous Click the image to view it in fullsize. Previous . The BTA (Bolshoi Teleskop Alt-azimutalnyi, Eng:Large Altazimuth Telescope) is a large 6 m optical telescope at the Special Astrophysical Observatory. The BTA-6 was the largest telescope in the world between its first light in 1975 and 1993.

... Spacecraft that will search for planetary systems around 40 million stars and observe the largest explosions in the universe have been chosen as the next two missions in NASA's medium-class Explorer (MIDEX) program. ... The first mission, to be launched in 2003, is the Swift Gamma Ray Burst Explorer, a three-telescope space observatory for studying gamma ray bursts. ... During its three-year mission, Swift will also survey the sky for new black holes and other sources of cosmic gamma rays. ...

... Asteroid . ... In case you didn't hear about it, which you probably didn't: On Jan. 7, an asteroid 1,000 feet across -- nearly three times the current diameter of Marlon Brando -- barely missed the Earth, which is most likely your planet of residence. ... What if this asteroid had hit the Earth? ... As it happens, the American Astronomical Society was holding a conference in Washington AT THE VERY SAME TIME as the asteroid nearly hit the Earth. ...

Elliptical galaxies Elliptical galaxies Rough subdivision · Normal ellipticals. ... Dwarf ellipticals (dE's). ... E dE BCD dSph 1013 - 1014 108 - 1013 107 - 109 109 107 - 108 300-1000 1-200 1-10 3 0.1­0.5 100 10­100 1­10 0.1­10 5­100 Elliptical galaxies Shapes of elliptical galaxies Elliptical galaxies Shapes of elliptical galaxies Elliptical galaxies Shapes of elliptical galaxies Elliptical galaxies Shapes of elliptical galaxies Elliptical galaxies ...

... Д. л. кДлнйкЙмЦЗ еУТНУ,ТНЛИ ,,УТЫ ТЪ,ВММњИ ЫМЛ,В ТЛЪВЪ ЛП. е.З. гУПУМУТУ, унй нДдйЦ "тдДгД кДллнйьзав" ї кТЪУ ,,ЫВ, Д.л., 1999 , , - , . ... XX , кДлнйкЙмЦЗ Д.л. тдДгД кДллнйьзав Зй ЗлЦгЦззйв 91 , , , . ... 1 -0,4 3 0 0,4 (B-V)0 0,8 1,2 1,6 -2 5 0 7 V 9 2 Mv 4 11 6 M45 13 8 0 0,4 0,8 B-V 1,2 1,6 . ... кДлнйкЙмЦЗ Д.л. тдДгД кДллнйьзав Зй ЗлЦгЦззйв 93 1950 +24њ +22њ +20њ +18њ +16њ +14њ +12њ Ori Ori Ori +6њ 50 40 30 20 10 0 1950 Tau +10њ +8њ 20 10 0 6 h 5h 50 40 30 20 10 0 4h 50 40 +4њ 3h . ...

J/AstL/vol/page SAI Open Clusters Catalog (Glushkova+, 2009) ================================================================================ Automated search for star clusters in large multiband surveys. ... Color excesses E(B-V), distance moduli and ages were determined for 141 new and 27 known, but poorly studied clusters. We present the Sternberg Astronomical Institute Open Clusters Catalog (SAI OCL Catalog) of coordinates, diameters and main physical parameters of these clusters. ...

. Back to A.Zasov's homepage.

... Courtesy of NASA/ESA Observation data (J2000 epoch) Constellation Right ascension Declination Redshift Distance Type Serpens Caput 15h 17m 14.4s[] +21° 35 08[] 12,740±50 km/s[][1] 600±30 Mly (183±8 Mpc)[1] SA0(r) [citation needed ] [a] Apparent dimensions (V) 0.28 в 0.28[] Apparent magnitude (V) 16.0[] Notable features Ring galaxy Other designations PGC 54559,[] PRC D-51[] See also: Galaxy, List of galaxies Hoag's Object is a non-typical galaxy of the type known as a ring galaxy. ...

... We consider the astrophysical evolution of the Galaxy over large time scales, from early stages (an age of ~10 8 yrs) to the end of traditional stellar evolution (~10 11 yrs). ... In the model considered, the basic stages of Galactic evolution are as follows. ... Essentially all other basic parameters of the Galaxy vary little. ... The final "stellar epoch" in the life of the Galaxy is completed ~10 13 yrs after its formation, when the evolution of the least massive stars comes to an end. ...

... Today this year's largest group of sunspots will cross the Sun's central meridian. ... The next day, the number of spots in the group reached five, and the day after, on June 2nd, it was possible to count thirteen sunspots on solar disk, which had been clear prior to this. ... This year's two most powerful active areas, which passed across the solar disk at the beginning of May, 2009, are set to appear in the Sun's eastern sector in two days, on June 6th. ...

... Exposure Time Calculator (ETC) . Survey processing . ... VISTA is a 4-m class wide field survey telescope for the southern hemisphere, equipped with a near infrared camera (1.65 degree diameter field of view at VISTA's nominal pixel size) containing 67 million pixels of mean size 0.34 arcsec and available broad band filters at Z,Y,J,H,K s and a narrow band filter at 1.18 micron. A wide field visible camera, if constructed, could also be used on VISTA. ... Tile . ... ESO VISTA Public Surveys . ...

... How to calibrate the energy scale for higher energies of future gratings? Difficult to find astronomical targets with well defined lines. ... Source Energy Flux keV HZ 43 0.2 Bright Sirius B 0.2 HZ43 /10 RXJ1856 1 Faint Simplicity Var WD WD No No No No Yes Yes Extend Lines Point Point Point 1' Point Point Point No Point Point Yes No Yes Yes Yes Yes Point Point , jet Point Cont Cont Cont Cont Lines Cont Lines Lines Lines ...

P.N. Lebedev Physical Institute Astro Space Center Russian Academy of Sciences S.A. Lavochkin Association, Roscosmos RADIOASTRON The Ground ­ Space Interferometer: radio telescope much larger than the Earth The Spectr-R Project http://www.asc.rssi.ru/ radioastron / High- Resolution HI 21 cm Mosaic of M 33 galaxy GENERAL OUTLINE The RadioAstron ... Such forecast could be used to prepare a long time-scale schedule of scientific observations. ...

... Subject and Problems of Stellar Astronomy. ... Plane of Galaxy, Methods of Its Location Determination. ... Stars Distances. ... Other Methods of Stars Distances Determination. ... Tangential Velocities, Their Determination by Self-Motions. ... Determination of Solar Apex and Spatial Velocity by Radial and Spatial Velocities of Stars. ... Features of Orientation and Parameters of Peculiar Stellar Velocities Ellipsoid. ... General and Selective Light Absorption in Galaxy. ... Darc Clouds in Galaxy. ...

... The vertical and slanted dashed lines in the first panel mark the separation distinguishing are as occupied by thick-disk objects according to Hanson et al. (1998) and Martin, Morrison (1998) , respectively. An abrupt change in the dispersion near V res 290 km/s (the vertical dashed lines) is apparent in all panels except the first. discussion in the text | next figure | privious figure . ...

... We present preliminary results from two programs to image the host galaxies of radio-quiet quasars in 1.6 micron light using NICMOS camera 2 on HST. The high redshift program consists of QSOs covering the redshift range 0.8 < z < 4.4 and a range of QSO luminosities. Of the six objects for which data have been obtained the results range from no host galaxy detected, to an obvious galaxy with an interacting companion, to a possible high redshift galaxy cluster. ...

arxiv:1203.6616 Кластеризация галактик в Спектроскопическом Обзоре Барионных Осцилляций SDSS-III: космологические приложения крупномасштабной двухточечной корреляционной функции (The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: cosmological implications of the large-scale two-point correlation function) . ... Authors: Jun Toshikawa et al. обзор arxiv:1203.3824 Первые звезды и галактики - основные принципы (The First Stars and Galaxies - Basic Principles) . ...

UPDATE FROM 03/08/2012: AT THE TIME OF ARRIVAL IN ENVIRONMENT DISTURBANCES OF LARGE SOLAR FLARE 05.03 0230 0409 0643 N17E52L299 X1.1/2B 3.7E-11 429 1 CME AND DEVELOPMENT MODERATE MAGNETIC STORM, IN COMPLEX ACTIVE REGIONS ON SUN AR11429 (N18L299, Sp = 1270 m.v.h. at 7.03) + AR11430 (N19L315, Sp = 200 m.v.h to 7.02) THE TWO LARGE SOLAR FLARES WAS OCCURRENCED 07.03 0000 0024 0349 N17E27L299 3B/X5.4 6.7E-11 429 1 II / 2, IV / 2, ... NEXT WEEK THE SUNSPOT ACTIVITY IS EXPECTED TO BE THE AVERAGE. ...

... Логотип миссии GLAST . ... Объектами наблюдения Fermi являются: активные ядра галактик, черные дыры, нейтронные звезды, пульсары, микроквазары, космические лучи и остатки сверхновых, галактика Млечный путь, наша Солнечная система, ранняя Вселенная, темная материя и другие высокоэнергетические источники. ... Не исключено, что именно данные с GLAST сыграют ключевую роль в разгадке тайны темной материи. ... Deep Space 1 . ... GLAST (Gamma-ray Large Area Space Telescope) . ... Союз (космический корабль)...

ADC CATALOG HOLDINGS SHORT TITLE LIST March 29, 2002 (adapted from ftp://adc.gsfc.nasa.gov/pub/adc/archives/catalogs/key) Category 1: Astrometric and Positional Data - March 29, 2002 1090 Positions of 502 Stars in Pleiades Region (Eichhorn+ 1970) 1107A Washington Cat Visual Double Stars 1984.0 (Worley, Douglass 1984) 1131A SAO Star ...