Statistics of sunspot activity . The sunspot indices . ... NGDC's observations . The solar regions . ... Average annual indices . ... April . ... April, 2013 . Visual indices of solar activity by National Geophysical Data Center . ... Average . ...

Russian SHAREABLE DATA CENTER Institute of Solar-Terrestial Physics SB RAS . ... A most promising problem is to investigate the interaction of two VHF powerful radiowave beams in the ionosphere, whose difference frequency is equal to the plasma frequency in some ionospheric area (that is, the difference frequency is taken in the range 1-8 MHz). ... Two-frequency interaction effects are based on radiowave non-linear mixing, which is rather complicated when describing and modelling the experiment. ...

... Main page News People . ASA . Master . Master net Homepage . ... MASTER . ... About Space Monitoring Laboratory, scientific directions, instruments, contacts . ... Latest news and news archive . ... 08.11.2011 . ... All news ...

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... 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. ...

... We publish 16 Doppler imaging temperature maps for the years 1994-2002 of the active RS CVn star II Peg. ... Through Doppler imaging we want to study the spot evolution of the star and in particular compare this with previous results showing a cyclic spot behaviour and persistent active longitudes. ... The derived temperature maps are quite similar to the ones obtained earlier with a different methods, the main differences occurring in the spot latitudes and relative strength of the spot structures....

... 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 . ...

General Information . ... Invitations for all paticipants which have submitted this information will be sent by express mail to participants in mid-September (for european citizens a little earlier). With this invitation you will be able to apply for a visa. But maybe you will need hardcopy of invitation only in moment of obtaining of visa while application could be made with scan of invitation. ... Please note that usually it takes about 5-7 days to obtain a visa with official invitation. ...

Электронная библиотека астронома-любителя. ... Ru.Space.News: . Апрель 1998 . ... Дата: 09 апреля 1998 (1998-04-09) От: Alexander Bondugin Тема: Space Station Media Workshop Scheduled For May 12-14 At JSC Привет всем! ... Дата: 09 апреля 1998 (1998-04-09) От: Alexander Bondugin Тема: Increasing Greenhouse Gases May Be Worsening Arctic Ozone Depletion Привет всем! ... Дата: 09 апреля 1998 (1998-04-09) От: Alexander Bondugin Тема: 25 years of Spacelab -- Go for Space Station [1/2] Привет всем! ...

... Sternberg Astronomical Institute , Moscow University . ... Present edition unites two parts of Catalogue of interacting galaxies by B.A.Vorontsov-Velyaminov: the first part (Part 1) containing 355 systems was published in 1959 [1] and the second one (Part 2) with 497 objects - in 1976 [2].Thus two published parts of Catalogue include 852 interacting systems. ... All new of them (1162 by number) were taken from the comments to the galaxies in Morphological catalogue by Vorontsov-Velyaminov et al.[ ...

... Messier 51 Whirlpool Galaxy (M51) - галактики NGC 5194 и NGC 5195 в созвездии Гончих Псов (Canes Venatici) .. ... Просмотр полной версии : Messier 51 Whirlpool Galaxy (M51) - галактики NGC 5194 и NGC 5195 в созвездии Гончих Псов (Canes Venatici) .. ... Messier 51A Whirlpool Galaxy (NGC 5194) . ... Координаты спиральной галактики Messier 51A Whirlpool Galaxy (NGC 5194) .: ... Messier 51B Whirlpool Galaxy (NGC 5195) . ... Как найти галактику Messier 51 Whirlpool Galaxy (NGC 5194/5195)? ...

... Molecular beam epitaxy . Surface analysis . ... Molecular beam epitaxy and fundamental studies of semiconductor heterostructures (with quantum wells, quantum dots and superlattices) based on: . narrow gap III-V compounds for optoelectronic and electronic applications; . wide gap II-VI compounds, as well as ZnO, for visible range and UV optoelectronics and basic studies in the field of spintronics; . ...

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Microsymposium 40, abstract 56, 2004 (A4 format) AUTOMATIC COMPILING OF HYPSOMETRIC MAP OF A PART OF THE 1 VENUSIAN SURFACE. ... The main principles applied in compiling the map such as the scale of the heights, types of prints and using of pictures of surface shall be apply in the compiling of the Hypsometric Map of Hemispheres of Venus in future. We consider that contours are the necessary features for hypsometric maps because allow to make measurement more accurate. ... Moscow., ...

... Corvus Capital, along with its own capital, has the backing of a number of international funding partners. ... MyCloudtag App has launched in the Apple App Store Google Play store! App Fitness & Health . Andrew Regan lead a 10 man team on the first ever there-and-back crossing of the Antarctica. ... CloudTag is a London Listed Company focused on the Fitness and Wellbeing Market. AIM Fitness & Health . Sirius Petroleum is an Oil Gas Company listed on London's AIM. AIM Oil & Gas . ...