... Four X-class Flares . ... Credit Copyright: NASA , Solar Dynamics Observatory, GSFC Explanation: Swinging around the Sun's eastern limb on Monday, a group of sunspots labeled active region AR1748 has produced the first four X-class solar flares of 2013 in less than 48 hours. ... Ranked according to their peak brightness in X-rays , X-class flares are the most powerful class and are frequently accompanied by coronal mass ejections (CMEs), massive clouds of high energy plasma launched into space. ...

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• Journal "Peremennye Zvezdy"
• Leonids and Friends
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... 2015 January 21 . The Complex Ion Tail of Comet Lovejoy . ... As the name implies, the ion tail is made of ionized gas -- gas energized by ultraviolet light from the Sun and pushed outward by the solar wind . ... The effect of the variable solar wind combined with different gas jets venting from the comet's nucleus accounts for the tail's complex structure. Following the wind, structure in Comet Lovejoy's tail can be seen to move outward from the Sun even alter its wavy appearance over time. ...

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• APOD: 2013 May 16 - Four X-class Flares
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Measurement of Sky Brightness at the Iranian National Observatory Davoud Afshari1 and Sadollah Nasiri1,2 1Physics Department, Zanjan University, Zanjan 45195-313, Iran; Institute for Advanced studies in Basic Science (IASBS), Zanjan 45195-1159, Iran; Measurement of light pollution 2 Introduction Among 34 candidate sites at the central part of the country, 5 sites namely Garkesh (in Kashan ), Kolahbarfi(in Kashan ), Deynava (in ... One of these is light pollution. ...

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• Observatories
• Results of recent and ongoing site programs
• The site testing programs in Antarctica and in Arctic

This page is devoted to information on Supernova 1998dh in NGC 7541 . ... Information on the original web pages for many of these images can be found on the Supernova links web page. ... Perpignan Observatory 1998dh page in French [ Translate ] . ... LOSS image sequence (color) marked images NEW 4/6/99 . click on image for more color images) This is a color composite image of Supernova 1998dh in NGC 7541 . ... Perpignan Observatory images 7/30/98 00h25m31s . ... Pedro RИ image 8/21/98 . ...

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... August 6, 1998 . Infrared Horsehead . ... Explanation: This famous cosmic dust cloud was imaged in infrared light by the European Space Agency's Infrared Space Observatory (ISO) satellite. The false-color picture shows the bright infrared emission from dust and molecular gas in part of the Orion star forming region surrounding the Horsehead Nebula . In visible light, the horsehead-shaped dust cloud looks dark against a background of bright glowing gas. ... About APOD > . ...

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• APOD: December 18, 1999 - Irregular Galaxy Sextans A

Astronomy . ... Institutions, Observatories . ... International Astronomical Union . ... Abastumani Astrophysical Observatory . Australian Astronomical Observatory . ... Byurakan Astrophysical Observatory . Hartebeesthoek Radio Astronomy Observatory . ... National Radio Astronomy Observatory . Nobeyama Radio Observatory . ... Pushchino Radio Astronomy Observatory . ... AGU journals . ... Astronomy and Astrophysics Springer . ... Astronomy Letters (ПАЖ) . ... Astrophysical Journal Letters . ...

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• Ссылки
• Biography of Pakhomov
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SPECTRAL FEATURES OF THE AVALANCHE DEPOSITS IN LUNAR CRATER REINER. ... Crater Reiner. ... 5 Immature soils (coded in green, box 3) occupy most areas of the inner wall slopes of the crater. ... Distribution of the immature soils shown in Fig. 5 correlates with distribution of the bright materials on the wall slope of the crater as it is seen in Fig. ... The presence of very immature soils on the inner wall slopes and on the central peak of the crater Reiner suggests recent intensive slope processes. ...

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• http://selena.sai.msu.ru/Bus/Publications/m44_14_busarev_etal.pdf
• http://selena.sai.msu.ru/Shev/Publications/ms38/ms083.pdf
• http://selena.sai.msu.ru/Shev/Publications/ms38/ms084.pdf

... Data . ... Services . ... Solar energetic particles . ... N -d SW Conditions : Time profiles of the key geomagnetic ( Ap and Dst indices), solar wind (velocity V , density n and temperature T ) and IMF ( B , Bx , By , Bz in GSM) parameters observed in the N day vicinity of the geomagnetic disturbed day. N -d Map of Solar Events : Map of solar surface events occurred within N day vicinity of the moment when the solar wind expansion (which causes the geomagnetic event) started. ... WIND . ...

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... Грифы УМО . ... УМО . ... Учебно-методическое Объединение (УМО) по классическому университетскому образованию (ранее Учебно-методическое Объединение университетов СССР) было создано на базе Московского государственного университета имени М.В. Ломоносова в 1987 г. Председателем Совета был назначен ректор Московского государственного университета. ... В состав УМО по классическому университетскому образованию в настоящее время на добровольных началах входят более 80 государственных университетов...

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... Skalnate Pleso , Contrib. ... Skalnate Pleso , Contributions Astron. ... Contributions of Astronomical Observatory Skalnate Pleso . ... Kurt V.G. , Yushkov B.Yu , Kudela K. , Galkin V.I. , Kashapova L.K. в журнале Contributions of the Astronomical Observatory Skalnate Pleso , издательство Astronomicky Ustav SAV (Slovakia) , том 45, ? ... Volkov I.M. , Chochol D. в журнале Contributions of the Astronomical Observatory Skalnate Pleso , издательство Astronomicky Ustav SAV (Slovakia) , том 43, ? ...

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• Journal of the Marine Biological Association of the United Kingdom - журнал |
• Nuclear Instruments and Methods in Physics Research, Section A: Accelerators,

... About lab . ... Conference "GraphiCon" . ... Estimation of object's integral brightness . ... brightness , dynamic range , HDR , perception . ... In this paper, we propose a solution to the problem of object?s integral perceived brightness estimation using high dynamic range images as input. ... Experimental verification has shown the superiority of the proposed method of integral subjective brightness estimation over several simpler methods, including simple averaging of luminance. ...

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• Estimation of object's integral brightness | Лаборатория компьютерной графики и
• Smart brightness and contrast correction | Graphics and Media Lab
• Smart brightness and contrast correction | Лаборатория компьютерной графики и

... Базы данных . ... Новости астрономии . Изображения небесных тел . ... Астрономия в Интернете (общая база данных, поддерживаемая пятью институтами: CDS, MSSSO, NRAO, ST-ECF, STScI . ... Центр малых планет . MPC ( IAU Minor Planet Center) . Центр данных по естественным спутникам планет Института небесной механики (Бюро долгот) . ... Центр данных для инфракрасной астрономии . ... Планетные данные . ... Observatory Codes . ... Эфемериды Института небесной механики (Бюро долгот, Париж) . ...

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• HSFA 2 technical description Technical Details
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... MASTER Net is 56 square degrees per 1 exposition . ... 06 Dec 2015: GRB 151205B: MASTER-NET early optical observations GCN18665 . ... 18 Nov 2015: GRB 151118A: MASTER-NET optical observations GCN18613 . ... 12 Nov 2015: GRB 151112A: MASTER-NET optical limit GCN18591 . ... 07 Nov 2015: GRB 151107A: MASTER-NET optical observations GCN18565 . ... 31 Oct 2015: Five OTs detected by Global Robotic MASTER Net ATel8232 . ... 02 Oct 2015: GRB 151001B: MASTER-NET early optical observations GCN18380 . ...

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• Observatory

... Positions and Proper Motions of 258,997 Stars for the Epoch and |Equinox of 1950.0", Publ. of the Smithsonian Institution of |Washington, D.C., No. ... 1971-1979, "Lowell Proper Motion Survey" |(red dwarfs), Lowell Obs. ... LHS |Luyten, W. J. 1976, "A Catalog of Stars with Proper Motion |exceeding 0".5 annually", Publ. of Univ. of Minnesota, |Minneapolis, Minnesota; Luyten, W. J., Albers, H. 1979, "An |Atlas of Identification Chart for LHS Stars", Publ. of Univ. of |Minnesota, Minneapolis, Minnesota...

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• http://www.sai.msu.ru/groups/cluster/gcvs/gcvs/GCVS5/rem5.txt
• http://www.sai.msu.ru/news/2008/09/19/ANNOUNCEMENT_PROGRAM_RJLPC.doc

... You got to listen to the heavens, you got to try and understand, the greatness of their movement is just as small as it is grand. Try not to hurry, it's just not your worry. ... I ain't preachin', I don't know how to make fast things move along slow, I can't stop it, can't make it go. ... I ain't crazy, nor am I lazy, just want to find out what's right and what's wrong. I ain't crazy, oh! the world keeps on turning, I'm still trying to find out what's right and what's wrong. I ain't crazy! ...

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• Springer LINK:A&A-EE: Table of Contents Volume 320 Number 3 (1997)
• Image: Sergey Shoumko, near the front of Crimean Observatory main building
• Image: A view to observatory from the nearby hill

05 Nov 2003 The Sun has continued its recent high levels of activity. At 1950 UT, 4 November 2003, a class X28 solar flare was released by the Sun. ... LASCO C2 Images of X28 Flare at 1950UT 04/11/2003 . ... SOHO (Solar and Heliospheric Observatory) is located between the Sun and the Earth and will, therefore, detect activity before it reaches the Earth. ... All this ongoing solar activity means that the Earth is destined to be bathed in more radiation - generating further auroral displays. ...

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Petrology of Teschenites and alkaline picrites associated with them . ... Teschenites and genetically connected with them volcanogenic-alkaline picґrites, tephrites, basanites, analcimites and others are of restricted development among alkaline basic and ultrabasic rocks. ... 2003; Jan Spicak et al., ... Teschenite intrusives form small bed-like, sil, laccolith-like outcrops among jurassic and Cretaceous geological complexes. ... Moscow: Nauka, 1979, p.299 (in Russian). ...

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• Pavel Yu. Pletchov
• The 26 Brightest Stars

... Astronomy search engine . ... PhysicsWeb Home Page . ... Sternberg Astronomical Institute . ... Astro Space Center Home Page . ... Landau Institute for Theoretical Physics . ... Astronomy and Space Physics Dept of Kiev University . ... NATIONAL RADIO ASTRONOMY OBSERVATORY Home Page . University of Hawaii - Institute for Astronomy . ... Space Telescope Science Institute Home Page . ... Sky & Telescope: The Essential Magazine of Astronomy . ... Springer LINK - Physics Online Library . ... Home . ...

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• Kiev University Observatory
• Новости науки

DESCRIPTION OF THE 3d SOLAR EVENT MAP . ... This date coincides with central day of the map marked by solid vertical line (in the present example - 13 July, 2000). ... The following phenomena are presented on the map: coronal holes, filaments, solar flares and the distribution of the solar magnetic field on the source surface (2.5 solar radii). The coronal holes are drawn by irregular solid curves with colors according to the day of observation (light blue, orange and violet). ...

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• 1d Map Description

... NASA's newest Great Observatory, the Chandra X-Ray Observatory (CXO) -- formally known as the Advanced X-Ray Astrophysics Facility (AXAF) -- launched on July 23, 1999 and represents such an advance. ... Hughes Danbury Optical Systems (HDOS), now Raytheon Optical Systems Incorporated, figured and polished the x-ray optics; Optical Coating Laboratory Incorporated (OCLI) coated the polished optics with iridium; and Eastman Kodak Company (EKC) mounted and aligned the optics and provided the optical...

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• Brightness constraint
• Sergei Popov's Bookmarks
• The X-ray Optics