. Information is available for the following staff members: . Kirill Kochetkov , . Boris Kreisman , Dr. Yuri Ponomarev , Dr., Head of Laboratory . Pavlo Tichina .

... Structure of Data . ... Catalog . ... In SAI OCL Catalog, we introduce our work on investigation of the Milky Way system of open star clusters. The main goal of our study is a search for new clusters using huge surveys. 168 new clusters have been already discovered by us using J,H,Ks data from 2MASS point source catalog. ... For 141 new clusters, we found their physical parameters using J,H,Ks data from 2MASS catalog and, for a number of clusters, our UBVRI CCD observational magnitudes. ...

... Observing . ... Solar Observing . ... April 3 (SUN) - Solar Observing, Central Park , Manhattan . ... APRIL'S SKY . ... Lecture Series at the American Museum of Natural History The Amateur Astronomers Association is proud to present an astronomy lecture series from October through May each year for our members and the .. ... The€аAmateur Astronomers Association of New York€аwas organized in 1927 to promote the study of Astronomy, emphasizing its cultural and inspirational value. ...

... Bad Astronomy . ... Bitesize Astronomy . ... Have you ever looked at pictures of Saturn's rings and noticed what look like gaps in the rings? ... Gian Domenico Cassini discovered a large gap in Saturn's rings in 1675. Later, an astronomer named Encke discovered a smaller gap near the edge of the rings. ... It was found long ago that an orbit in the Cassini Division, as the large gap is named, has a period almost exactly one-half that of one of Saturn's moons named Mimas. ... 2008 Phil Plait. ...

... Introduction: In the present work the morphometric parameters for 87 large martian craters [1](with diameters from 411 up to 110 kms) have been determined: depth of a crater, the relation of depth of a crater to diameter (/D), height of a rim ­ h, with the help of profiles constructed on the basis of supervision of space vehicle MGS [2].The comparison with similar morphometric parameters of large lunar craters also is fulfiled. ... 2000) Morphological Calague Of the Craters Of Mars. ...

... Chilingarian, I., Melchior, A.-L., Zolotukhin, I. 2010: Analytical approximations of K -corrections in optical and near-infrared bands , MNRAS, v. 405, p. 1409 (also arXiv:1002.2360) . ... Calculator . ... calculate spectral energy distributions , K-corrections calculator , UKIDSS YJHK , K-corrections of galaxies , spectral based k-corrections , SDSS filter set K-corrections , K correction code IDL , kcorrect IDL C , . ...

. Full-Text Search . Latest . Statistics . arXiv.org . > . astro-ph . recent . find . SAI VO . Search sort results by Date Relevance . Use logical operators AND , OR , NOT and round brackets to construct complex queries. Whitespace-separated words are treated as AND ed. Show 10 50 100 articles per page in Full Compact mode . zCOSMOS . SAI VO | Astronet | SAI MSU .

Russian SHAREABLE DATA CENTER Institute of Solar-Terrestial Physics SB RAS . ... To improve the quality of ionograms and to carry out on automatic ionogram processing we have developed a special software, which can be arbitraly devided into the following main parts: . ... Ionogram processing software on the basis of image processing; . Interactive ionogram processing software. ... Here we present ionogram samples for different kinds of chirp sounding . ... Capabilities and samples | ...

... Satellite data ] . ... SMIS IKI RAN has developed the software package which may be used both by owners of acquisition stations and individual users of satellite information. ... AVHRR instrument data processing. ... This enables the users who are not yet qualified in computer methods of satellite data processing, to get a quick start with the software. ... The basic software package enables a user to solve a wide range of tasks (in our server You can find the data processing samples ). ...

... Average resolution at altitude H=668 km . ... Swath width at H=668 km and inclination of beginning of swath 20.48 degrees . ... Resolution at H=668 км . ... Наименование параметра . ... 1 канале . ... Полоса обзора при H=668 км . ... 1-5 спектральной зоне, не более . ... 1 спектральной зоне . 0,48-0,52 мкм . ... 0,915-0,997 мкм . ... 1-4 канал . ... 1-4 каналов . ... Спектральные характеристики каналов (по уровню 0,5): . ... For more information send a mail to: info@sputnik.infospace.ru . ...

... From the chain visibility point of view, it is very recommended to look at the Javascript movies , especially if the frame rate can be not regulated in your MPEG player. ... The non-CH-associated large-scale chains visible on the SOHO/EIT images at three wavelengths of 171, 195 and 284 as well as on the MLSO/HAO He I 10830 spectroheliogram of December 16, 1997. ... The SOHO/EIT movies at 171 and 195 show the chain dynamics on June 1-3, 1998. ... Javascript movie (230 KB), SOHO/EIT, 171 . ...

... COMPUTER SIMULATION OF RADIOWAVE MULTIPLE SCATTERING EFFECTS IN IONOSPHERE USING MONTE-CARLO METHOD . ... Distribution of reflected radiation on the ground is computed. ... Such influence can be remarkable if the scattering is multiple, i.e. the optical thickness for the scattering process is considerably greater than a unit. ... Radiation energy transfer in the slab is modeled by distribution of some particles carring small portions of radiation energy. ... The isotropic plasma approximation is...