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. ...

The new view on the population of Galactic open clusters A.E.Piskunov1, N.V.Kharchenko2, S.RЖser3, E.Schilbach3, R.-D.Scholz4 1 2 3 4 Institute of Astronomy, Moscow, Russia Main Astronomical ... Observatory, Kiev, Ukraine Astronomisches Rechen-Institut, Heidelberg, Germany Astrophysikalisches Institut Potsdam, Germany What are open clusters and what do they teach us Groups of Population I ... Cluster complexes: OCC-1 = Gould's Belt cluster complex? ...

... GRIN lenses for telecommunication optics applications ? GTC (gradient telecom) lenses. ... GTC lenses are used in different fiber-optic devices: collimators, couplers, isolators and WDM etc . ... 2.Diameter . GTC lenses diameters are 1.0 mm, 1.8 mm, 3.0 mm and 4.0mm. ... 1.0 mm -3.0 mm diam GTC lenses are supplied in 0.22P, 0.23P, 0.25P, 0.27P and 0.29P length. 4.0 mm diam GTC lenses are supplied in 0.11P length. ... GTC . ... 3 scratches with 5mkm max width and 200mkm max length are allowed . ...

... Разные фотографии [ 1 ] . ... Фотографии [2] . ...

... A Р?galitР? d'objectifs, elles permettent d'obtenir des grossissements plus considР?rables, parce que les rayons lumineux qui traversent les lentilles perdent moins par l'absorption que par la rР?flexion sur le miroir mР?tallique des tР?lescopes. ... Le tР?lescope des montagnes Rocheuses. ... Qu'allaient-ils dР?couvrir dans le champ de ce tР?lescope qui grossissait quarante-huit mille fois les objets observР?s? Des populations, des troupeaux d'animaux lunaires, des villes, des lacs, des ocР?ans? ...

. Russian Version [ MS-Win ] . [ News ] . [ Satellite data ] . [ SMIS ] . [ ] . NOAA 14, 1997.04.16 10:37 GMT . St.Petersburg . Pseudo-colour image. Red - channel 3, Green - channel 2, Blue -channel . St. Petersburg . August 1996. True-color composition from NOAA 12 and NOAA 14 AVHRR Channel 3 data using images acquired at different times of a day. Back to SMIS Home Page .

an error occurred while processing this directive] . Космическое агентство NASA в рамках программы Discovery выделило деньги на проект космического зонда Dawn, который в 2006 году отправится к двум самым крупным астероидам нашей солнечной системы - Весте и Церере. ... Например, вокруг астероида Веста, размер которого в поперечнике составляет около 800 км, зонд Dawn будет летать на высоте 100 км. ... другие статьи >>> . Александр Бардаш, 2000 ...

Главная Проекты Mars Exploration Rover . ... With far greater mobility than the 1997 Mars Pathfinder rover, these robotic explorers will be able to trek up to 100 meters (about 110 yards) across the surface in a Martian day. ... The rovers will be identical to each other, but will land at different regions of Mars. ... Where Pathfinder had scientific instruments on both the lander and the small Sojourner rover, these larger rovers will carry all their instruments with them. ...

ИСТОРИЯ ОТКРЫТИЯ УРАНА, ЕГО СПУТНИКОВ И КОЛЕЦ . ... Третья по величине планета Солнечной системы, Уран виден с Земли как звезда 6 звездной величины. С 1690 года астрономы несколько раз отображали его в качестве звезды на своих картах. ... Спустя шесть лет, в 1787 году, Гершель открыл два крупнейших спутника Урана Оберон и Титанию - объекты 13-14 звездной величины. ... Уильям Гершель (1738-1822) . ... Благодаря новым открытиям Уран в 1997-1999 годах был лидером по числу открытых спутников. ...

... 000, 1­12 (2009) Printed 11 February 2010 A (MN L TEX style file v2.2) Analytical approximations of K -corrections in optical and near-infrared bands I1gor V. Chilingarian1 2 ,2,3 , Anne-Laure Melchior 1,4 and Ivan Yu. ... Received 2010 February 01; in original form 2009 August 14 ABSTRACT To compare photometric properties of galaxies at different redshifts, the fluxes need to be corrected for the changes of effective rest-frame wavelengths of filter bandpasses, called K -corrections. ... Table 1. ...

Russian SHAREABLE DATA CENTER Institute of Solar-Terrestial Physics SB RAS . ... The algorithm and appropriate program for decametric radiosignal propagation conditions prediction for paths from 500 to 9000 km have been developed at ISTP SB on the basis of normal wave method (AltyntsevaB.I,Iliyin N.V., Kurkin V.I. and others //Decameters channel simulation on the base of normal wave method . ... Solar activity indices are chosen automatically from the prediction date from the database . ...

Russian Space Science Internet (RSSI) Project has been established in April, 1993 after joint decision of Russian co-chairmen of Working Groups on Space Research and NASA to improve cooperative activities under the Agreement Between the United States of America and the Russian Federation Concerning Cooperation in the Exploration and Use of Outer Space for Peaceful Purposes (1992). ... NASA PSCN provides the telecommunications infrastructure from NASA to Space Research Institute RAS. ...

INTERNATIONAL EXHIBITION . Space technologies - to serve the society" Kyiv, Khreschatik street, 2 24-28 August 2001 . ... About exhibition . ... NAME: International Exhibition "Space Technologies to Serve the Society". ... REASONS: International Exhibition "Space Technologies to Serve the Society" is being carried out according to the President of Ukraine Decree ? ... strengthen of the space industry enterprises' positions and ptoducts' manufacturing for domestic market needs, . ...