... Spherical aberration, coma, and astigmatism are also easily observed using the star test. ... Off-axis images are complex. ... Fig. ... Diffraction by a circular aperture as a function of defocus for no aberration Airy Disk 1 wave defocus Less than 1 wave defocus Fig. ... Diffraction by a circular aperture as a function of defocus for third-order spherical aberration Paraxial Focus Small distance inside paraxial focus Moderate distance from marginal focus Immediate neighborhood of marginal focus Fig...
M87 Gas Disk and Optical Jet (STSci) . SEDS Messier Catalogue M87 Page (U. Arizona) . Black Hole and Jet in M87 (NASA/GSFC) . ... The large scale radio structure is shown in the 3CRR Atlas . Richard White's Virgo Cluster page has optical and X-ray images of the large-scale environment of M87 . ... HST Observes Distant Radio Galaxies (STScI) . HST Finds a Black Hole in NGC4261 (STScI) . HST finds a Bare Black Hole Pouring out Light in NGC6251 . ... Alan Bridle's Home Page . ...
THE 75th NAME-LIST OF VARIABLE STARS. ... The 75th Name-List consists of two tables. ... the literature, taken from positional catalogues, including USNO A1.0/A2.0 and GSC, or determined by the authors); the range of variability (sometimes the column Min gives, in parentheses, the amplitude of light variation; the symbol ( means that the star , in minimum light, becomes fainter, than the magnitude indicated); and the system of magnitudes used ( P are photographic ...
... PubliГї le 28/05/2008 par Claro Miguel . Date : 07/05/2008 . Lieu : Parque da Paz, Almada - Portugal . ... Commentaires : In the image we can see an Earthshine Moon, and below center, the planet Mercury, near the horizon image. The image was made at the "Park of Peace", a big garden with a great lake in the center of Almada city, in Portugal. ... Date : 20/03/2007 . ... Commentaires : Moon Earthshine with Venus over the portuguese bridge that binds Lisbon to the south edge-"Almada city". ...
... Schools . ... Dean?s Office . Departments . ... Chemical Materials Science Department . ... Geology Department . ... Political Science Department . ... School of Physics . ... Astronomy and Space Computer Science Department . ... The training of astronomers at Kharkiv Karazin National University was performed in a frame of speciality ?Astronomy? on the cathedra of astronomy of the physical department. ... Since 2008 in department of astronomy specialization ?Space computer sciences? was created. ...
Please enter the lightcurve file name and period search parameters: . Lightcurve file: . ... Apply the Heliocentric correction and convert all dates to Terrestrial Time (TT)? ... Also, the Heliocentric correction cannot be applied to such lightcurves. ... This period search service is also available at the mirror sites: Mirror 1 , Mirror 2 , Mirror 3 , Mirror 4 . You may download the latest source code distribution and install the period search service at your own web server. ...
... Institute of Astronomy of Russian Academy of Sciences . 119017, Pyatnitskaya str., 48, Moscow, Russia . ... About me: . ... I observed different objects (minor planets, satellites, variable stars, gamma bursts, etc.) by myself at Zeiss-600 and 2-m telescope. Also I had some experience with observational data from the 6-m telescope BTA (SAO, Russia), VLT (ESO, Chile), 1.5-m telescope in Maidanak (Uzbekistan) and infrared space telescopes Spitzer and Herschel. ...
... The Science Operation Department is composed of Astronomers, Telescope Instruments Operators(TIOs) and Data Handling Administrators(DHAs). ... Astronomers have proposed several methods to quantitatively measure the amount of turbulence above the telescope, which the most common ones is Differential Image Motion Monitor (DIMM). In optical testing, the Hartmann test is the common method to test the quality of optical components. ... Hartmann mask consists of 48 lenses. ...
back to "Astrology" . ... Russia under the Sign of Jackass . I'll venture to outspeak a truism: there is nowhere such a country except our Russia, where people zig and zag from one extremity to another. ... Lummy, where are the brain-convolutions of millions of people, who have been educated in secondary school? ... No, it is quite sufficient to be an average man with average intellect and average (secondary school) education. ... Another analogous question. ... and an average education . ...
... Меркурий - четвертая по блеску планета: в максимуме она почти так же ярка, как Сириус, ярче же бывают только Венера, Марс, Юпитер. Тем не менее Меркурий очень трудная для наблюдения планета из-за малости его орбиты и, следовательно, близости к Солнцу; его наибольшая элонгация (видимое угловое расстояние от Солнца) составляет 28 градусов. ... Вследствие всех этих разного рода трудностей только самым упорным наблюдателям удавалось обнаружить детали на поверхности Меркурия. ...
Russian SHAREABLE DATA CENTER Institute of Solar-Terrestial Physics SB RAS . ... The ionogram catalogue is divided into the data file and the key file. ... The station codes database consists of the data file and two key files. ... This database consists of the data file and the key file. ... The antenna DB consists of two interrelated databases. ... The data file contains the following information: antenna type, antenna name, antenna parameters names, measurement units, and ranges of parameters. ...
... The Triplet Lenses are manufactured by LOMO PLC of St. Petersburg Russia, one of the world's largest and most advanced optical manufacturers. ... This day the official web site of St.Petersburg company, lomo.ru, became accessible. ... LOMO VOTING PAPERS PROCESSING COMPLEXES TESTED SUCCESSFULLY . On December 16, 2001 during elections to Legislative Assembly of Leningrad Region, Russia, pilot pieces of the new Voting Papers Processing Complex created at LOMO PLC were used for the first time. ...
Spacecraft STP Data 1. ... This CD-ROM contains solar flare reports, sunspot numbers and regions histories, total solar irradiance, and solar bursts. ... MAGSAT - 2 discs. ... A Compilation of 1963-1999 Solar Wind Field and Plasma Data, Near Earth and Deep Space - 3 discs. This CD-ROM contains the interplanetary magnetic field (IMF) and solar wind plasma (SWP) data from several spacecraft which have explored the near-Earth and deep space regions over the last three decades. ...
... the historical dates of the Ukrainian space industry; . ... EXPOSITIONS OF UKRAINIAN SPACE INDUSTRY ENTERPRISES AND PARTNERS ON THE SUBJECT OF . ... Ukrainian Space Industry Investment Potential Exposition: . Investment opportunities in Ukrainian space industry; . ... Investment projects with participation of Ukrainian space industry enterprises; . ... Ukrainian space industry enterprises' securities; . ... Expositions of the Ukrainian Space Industry Leading Enterprises and Partners . ...
... Солнечная система: . ... Сайт Гавайского университета. Здесь можно найти самые точные и самые последние астрономические данные по спутникам Юпитера и Сатурна (англ.) . www.jpl.nasa.gov . Большой и красочный сайт (англ.) ... Справочник по Солнечной Системе (англ.) ... Новая хронология А.Т.Фоменко: . ... Официальный сайт проекта "Цивилизация" . ... Некоторые работы (книги) Фоменко и его соратника Носовского на крупнейшем библиотечном сайте рунета. www.bibl.ru/novyye_empiriko-stat.htm . ...