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. ...

... Printed in the U.S.A. doi:10.1088/0004-637X/691/2/1222 AUTOMATED LASCO CME CATALOG FOR SOLAR CYCLE 23: ARE CMEs SCALE INVARIANT? ... CME RATE DURING CYCLE 23 Figure 2 shows the daily CACTus CME rate for cycle 23 in red, with the International Sunspot Number (e.g., Vanlommel et al. 2004) superimposed in gray as solar cycle reference. ... The CACTus CME speeds Figure 12. ... A comparison of a sample of common events shows that on average the CDAW CME width is wider than the CACTus CME width. ...

... The relation between the metallicity of F stars and their loci on the c 1 , diagram is investigated for a semple 2000 galactic-disk F stars having uvby data. ... По данным uvby -фотометрии, для двух тысяч F-звезд диска Галактики изучена связь между их металличностью и положением на диаграмме c 1 , . ... Если считать, что распределение металличности звезд диска в диапазоне lg Z/Z (или [Fe/H]) от -0.5 до +0.3 непрерывно, то Y 0.02. ...

... Solar Data: f.e. X-ray . Night Sky Live . ... Heavens-Above: Sky chart, Satellites, Iridiums and astronomical objects For Moscow For SAO Baksan . ... ESO-MIDAS page . ... Tutorials for Astronomy . ... Asteroid and Comet Hazard . ... Observable Comets: This page lists links to orbital elements and ephemerides of (potentially) observable comets. ... Leonid page - a lot of information for years Comets and Meteor Showers . The American Meteor Society . ... North American Meteor Network Home Page . ...

. Statistics of sunspot activity . The sunspot indices . My observations . NGDC's observations . The solar regions . Links . About authors . Russian pages . Last updated 6.04.2016 .

... 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. ...

... The Irkutsk IS radar has the opportinuty to measure several ionospheric plasma parameters such as electron density N e , electron and ion temperatures T e , T i , and drift plasma velocity along the sounding direction. ... To the 1999-2001 data we have added the E-layer ionosphere model to electron concentration profile, which has been constructed by integral concentration from the ionosphere beginning from 160 km obtained from experiment. ... Capabilities and samples | ...

... 108 ї тО,,ЛМ Д.е., 1996 лйкйлйЗлдав йЕкДбйЗДнЦгъзхв ЬмкзДг, <6, 1996 оабауЦлдДь йлзйЗД щооЦднД лЗЦнйазСмсакйЗДззйЙй СкЦвоД ЙДбйЗ , , , , . ... тДгДЙаз Д.е. щооЦдн лЗЦнйазСмсакйЗДззйЙй СкЦвоД ЙДбйЗ 109 . ... 110 лйкйлйЗлдав йЕкДбйЗДнЦгъзхв ЬмкзДг, <6, 1996 f1 (v x ) j j 0 + j1 = 0, (6) 0 f0 (v x ) /k v x . ... 5) , тДгДЙаз Д.е. щооЦдн лЗЦнйазСмсакйЗДззйЙй СкЦвоД ЙДбйЗ 111 . ... 112 лйкйлйЗлдав йЕкДбйЗДнЦгъзхв ЬмкзДг, <6, 1996 . ... тДгДЙаз Д.е. щооЦдн лЗЦнйазСмсакйЗДззйЙй СкЦвоД ЙДбйЗ 113 ), . ...

... Space flight . Crew training . ... The contemporary world opinion, while welcoming the efforts of different states aimed at realization of manned space flights, still considers these efforts insufficient, over-bureaucratized and too slow. ... The more up-to-date is the basic training program for a cosmonaut/astronaut or a manned space flight participant (hereinafter referred to as the student) that is being offered to your interested attention. ... Pre-flight space training (PFST). ...

... Sidereal Times is Available as a Blog! ... David Lecther, Outreach Coordinator Bob Vanderbei Richard Gott, III On January 11, we will have our own Dr. Ken Kremer to speak on "The Space Shuttle, The Space Station, and What's Beyond for NASA." ... Credit: Ken Kremer Page 3 December 2010 Amateur Astronomers Association of Princeton from historical units in which each magnitude is 2.5 times brighter than the next, and the span of all stars visible to the naked eye are 1 to 6 (1 is brightest). ...

... 322, L29 ± L36 (2001) The 2dF QSO Redshift Survey ± V. The 10k catalogue S. M. Croom,1w R. J. Smith,2 B. J. Boyle,1 T. Shanks,3 N. S. Loaring,4 L. Miller4 and I. J. Lewis1 1 2 3 4 Anglo-Australian Observatory, PO Box 296, Epping, NSW 1710, Australia Liverpool John Moores University, Twelve Quays House, Egerton Wharf, Birkenhead CH41 1LD Department of Physics, University of Durham, South Road, Durham DH1 3LE Department of Physics, Oxford University, 1 Keble Road, Oxford OX1 3RH Accepted 2001 March 7....

I/220 The HST Guide Star Catalog (Lasker+ 1992) ================================================================================ The Guide Star Catalog Version 1.1 - An all-sky astrometric and photometric catalog to support the operation of the Hubble Space Telescope The Guide Star Catalog Version 1.0 is described in a series of papers: I. Astronomical foundations and image processing Lasker B.M., Sturch C.R., McLean B.J., Russell J.L., Jenkner H., Shara M.M. =1990AJ.. ... Astrophys. ...

В рамках подготовки программы по возобновлению пилотируемых полетов на Луну и создания на ее поверхности постоянной базы в период с 2008 по 2016 год НАСА планирует провести дополнительное исследование Луны с помощью различных автоматических станций. Первыми стартовали сразу два космических аппарата: большой орбитальный зонд Lunar Reconnaissance Orbiter (LRO) и небольшой аппарат для исследования поверхности ударным методом Lunar Crater Observation and Sensing Satellite (LCROSS). ... орбиту Луны . ...

The possibility of recovery of the vertical distribution of the magnetic field in umbrae by line width differences S.G. Mozharovsky Ussuriysk Astrophysical Observatory of FEB RAS, Ussuriysk, Russia sw@newmail.ru Abstract. This article studies the possibility of recovery of the vertical distribution of the magnetic field in the photospheric layers of sunspot umbra by the Difference of the Line profile Absolute Widths of neutral zirconium ? ... 2) Line profiles for cold models have extended wings. ...

... Калибровка снимка - это удаление из него паразитной информации, которая включает в себя: темновой шум, горячие пиксели, шум считывания (ток смещения), а также тени от пыли на матрице и оптике. Для калибровки снимка нужно подготовить снимки с паразитной, т.е. нежелательной информацией. В первую очередь нам нужно получить мастер-кадр шума считывания (ток смещения), на западе снимок шума считывания называют Bias или Offset . ... Уровень темнового шума сильно зависит от температуры матрицы. ...

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