... From the uvby photometry and proper motions for about 5500 nearby F stars we have found the following: (i) F stars , taken in narrow ranges of metallicity , show at [fe/H] 0 rather distinct cut-off in their distribution along the Main Sequence (MS) at the blue side, which is suggested to be an indication for the MS turn-off in stellar groups of fixed metallicity ; (ii) the corresponding turn-off age from theoretical isohrones strongly correlates with the ...

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• Population of Galactic globular clusters, figures
• RR LYRAE VARIABLES SUBSYSTEMS IN THE GALAXY, figures
• Subsystems of the Galactic halo, figures

... SUN MOON MERCURY VENUS MARS, JUPITER SATURN . ... Mars . ... Previously understood that magnetic fields were directly related to rotation, so when I read that Mars, like Venus, didn't have one, my understanding crumbled. What exactly causes magnetic fields in planets? ... RELATED TOPICS: MAGNETIC FIELD . Planetary magnetic fields are definitely related to rotation, but directly not so much. ... Get instant access to subscriber content on Astronomy.com! ...

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• A simpler cosmic relation | Astronomy.com
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... Meade Instruments Corporation . ... How to Calculate Power . How to Calculate Power: The magnification, or power, at which a telescope is operating is a function of the focal length of the telescope's main (objective) lens (or primary mirror) and the focal length of the eyepiece employed. ... Example: The Meade DS-2070AT telescope has an objective lens focal length of 700mm; when this telescope is used with a 25mm eyepiece, a power of 700/25 = 28 power (written as "28x") results. ... about meade | ...

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• Meade Instruments Corporation - Choosing A Telescope
• Meade Instruments Corp. - Meade Customer Support
• UHTC Coatings: Ultra High Transmission Coatings, Special Coatings, Telescopes,

The ESA/ESO Astronomy Exercise Series 2 . The Distance to Messier 100 as Determined by Cepheid Variable Stars . ... The small variations in distance to the individual Cepheid variable stars in the Cloud are negligible compared with the much larger distance to the SMC. ... In this way Cepheid variable stars can be used as one of the 'standard candles' in the Universe that act either as distance indicators themselves or can be used to calibrate (or set the zero point for) other distance indicators. ...

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• ASP: AstroCappella - A Musical Exploration of the Universe
• ASP: Sharing the Universe
• ASP: This Restless Globe

... Bad Astronomy . ... Bad Astronomy : The Moon appears larger on the horizon than overhead because you are comparing it to foreground objects. Good astronomy : The Moon does appear larger on the horizon, but it is because of the way we perceive the sky. ... The most common misconception is that it is because you are unconsciously comparing the Moon to foreground objects like trees and houses, or even the horizon itself, and that makes the Moon look bigger than when it is all alone in the sky. ...

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• Phil Plait's Bad Astronomy: Info
• Phil Plait's Bad Astronomy: Bitesize Astronomy
• Phil Plait's Bad Astronomy: Bad News

. Language [RU/EN] Search: . Home . UP . Research . Projects . Services . Info . News . Events . Personal . Archive . Ionosphere and radiowave propagation: structure . The main page . Information . Publications: . 2011 - 2015 . 2009 - 2010 . 2007 - 2008 . 2005 - 2006 . 2000 - 2004 . 1995 - 1999 . Participation in International symposiums and conferences: . 2013 - 2015 . 2011 - 2012 . 2009 - 2010 . 2007 - 2008 . 2005 - 2006 . 2002 - 2004 . N.V. Pushkov . 09/04/2016 23:52 MSK . webmaster@izmiran.ru .

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• The 14 July 2000 meter-wavelength dynamic radio spectrum
• conferences
• Heliophysical Laboratory of IZMIRAN (Solar-Terrestrial Physics Division)

. Rus . Eng . Sun images . Magnetic storms online . Sun flares . Geomagnetic activity forecast . Active areas . September : 2007 . mo . tu . we . th . fr . st . su . 1 . 2 . 3 . 4 . 5 . 6 . 7 . 8 . 9 . 10 . 11 . 12 . 13 . 14 . 15 . 16 . 17 . 18 . 19 . 20 . 21 . 22 . 23 . 24 . 25 . 26 . 27 . 28 . 29 . 30 . No data available . 1953-2016 Laboratory of X-ray astronomy of the Sun, LPI RAS, Russia . Tel.:+7(499)132-65-96, Fax: +7(499)132-65-97 . Design WEBMASTERA.ru .

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• Latest images of the Sun January 11, 2007
• Latest images of the Sun January 12, 2006
• Latest images of the Sun January 10, 2007

The most up-to-date information related to atmos 3.0 are collected here due to constantly increasing interest to MASS/DIMM processing software... atmos 3.0 is still beta , so the latest version is 2.97.5 (there is also 2.98.x branch which absorbs new features) . ... M' line: . ... free seeing and its relative error . ... dimm seeing and its relative error (if dimm data are present, zeros otherwise) . ... dimm turbulence power and its relative error (if dimm data are present, zeros otherwise) . ...

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по текстам по форуму внутри темы . Астронет | ... Форумы >> Обсуждение публикаций Астронета . ... Международная конференция "Putting A Stars into Context: Evolution, Environment, and Related Stars" . ... Международный научный оргкомитет, Государственный астрономический институт им. П.К. Штернберга, Институт астрономии РАН и Астрономическое общество проводят конференцию "Putting A Stars into Context: Evolution, Environment, and Related Stars" 3-7 июня 2013 г. в Москве в МГУ им. М.В. Ломоносова. ...

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• Астронет > Форумы > Обсуждение публикаций Астронета > Международная конференция
• Астронет > Англо-Русский Словарь
• Journal "Peremennye Zvezdy"

RELATIVE SUNSPOT NUMBERS Description of Data from SGD Explanation of Data Reports: Relative Sunspot Numbers -- The relative sunspot number is an index of the activity of the entire visible disk of the Sun. ... The provisional daily Zurich relative sunspot numbers, Rz, were based upon observations made at Zurich and its two branch stations in Arosa and Locarno and communicated by M. Waldmeier of the Swiss Federal Observatory. ... This indicates the uncertainty above and below the predicted number. ...

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• http://www.wdcb.ru/stp/GEO.html
• World Data Center for Solar-Terrestrial Physics, Moscow

Next: stecf.cplucy - Enhanced Two-channel Up: The ``stecf" IRAF Layered Previous: The ``stecf" IRAF Layered . For many years the ST-ECF has developed IRAF tasks and packages for HST and related data analysis. ... To allow wider and more efficient distribution and to bring all components to a uniform level of quality and documentation we have decided to combine these components into a standard-format IRAF package to be called ``stecf''. ...

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... ISC Kosmotras . ... Comments, Opinions Publications Dnepr Program . Dnepr launch record 17 August 2011. ... Dnepr Cluster Mission 2013 19 June 2014. Dnepr Cluster Mission 2014 6 November 2014. ... On June 28, 2007, a converted SS-18 rocket commercially known as Dnepr successfully launched Genesis-2 satellite into its target 550 km orbit inclined 64.5 degrees. ... Dnepr Program operations are under control of the Federal Space Agency of Russia and National Space Agency of the Ukraine. ...

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• Latest
• Latest successful launch of Dnepr

... the data are described accurately enough to allow an unambiguous interpretation of the data, as well as a comprehension of the context in which the data were acquired and/or processed; a single ascii file, named ReadMe , is designed for this role. the data are in a format which allows their usage by tools currently in usage in our discipline -- normally flat ascii files ; other formats can be accepted, but are converted into flat files. ... How to prepare the Data files . ... How to deposit the data...

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• Memorandum
• Metagalaxy sector, archive 2013
• Study of radio spectra and variability of GPS sources

... University history . ... V. N. Karazin . ... July, 2016 . New Program: BS in International Relations and Regional Studies . V. N. Karazin Kharkiv National University is pleased to invite future students to apply for a new speciality: BS in International Relations, Social Communication and Regional Studies (educational program International Relations and Regional Studies ) offered by the School of International Economic Relations and Travel Business. ... up until April 2016 . ... 2016?: ...

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... IAA VLBI Analysis Center . ... First IAA SLR EOP submission to IERS Annual Report . ... Beginning of operational processing of SLR observations . ... We use several program packages for analysis mostly developed at the IAA: GROSS for processing of the SLR observations and analysis of EOP and coordinates time series, OCCAM/GROSS for computation of EOP, station coordinates, and troposphere parameters time series from the VLBI observations, GRAPE for processing of GPS observations. ...

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• NAA 2009-2010 (contents)
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... October 6, 09:00 09:40 . Jorge Melnick (ESO) . ... We present a statistical and temporal analysis of the ground meteorological properties recorded at the five selected sites for hosting the European Extremely Large Telescope (EELT). ... Marc Sarazin (ESO) . The organization and development of the E-ELT site testing campaign by ESO are described. ... The E-ELT Site Testing activities in northern Chile and Argentina are reviewed, and pioneering explorative campaigns are illustrated. ...

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• Methods and instruments to measure/monitor major site properties
• General information

intro , disclaimer , faq & g-list , mailing lists , usenet , www , gopher , ftp & mail-ftp , credits ] . There are a lot of resources on the net available to Gravis Ultrasound ("GUS") users. ... GUS Forum . GUS MIDI FAQ WWW page . ... Australia . Australia alternate . ... James Andrews ( james@maths.ex.ac.uk ) : GUS MIDI FAQ WWW page . ... Lee McLoughlin ( lmjm@doc.ic.ac.uk ) : European FTP site and WWW page . ... Matt Perkins ( matt@poodle.mpx.com.au ) : Australian FTP site and WWW page . ...

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• Project SUBMILLIMETRON
• RadioAstron Announcement of Opportunity - 1, english version
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... Laboratory for Spectroscopy of Molecular Structures . ... News . ... A new article entitled Description of optical properties of cholesteric photonic liquid crystals based on Maxwell equations and Kramers-Kronig relations has appeared in Physical Review E. Congratulations to Grigoriy Ksyonz on his first publication! . 25 th February 2013 . ... 22 nd November 2012 . ... 22 nd February 2012 . 4 th Workshop on Liquid Crystals for Photonics 2012 will take place in Hong Kong December 9-11, 2012. ...

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• X-Ray Structural Analysis
• Department of Solid State Physics MIPT
• Spectroscopy of Semiconductors and Dielectrics

... Armagh Goes Digital . ... N.I. Space Office . ... In?а 2006 Armagh Planetarium launched the Northern Ireland Space Office (NISO) . ... The resulting resources and support materials will use the context of space to relate science, technology and mathematics to real life. ... There are already many astronomy and space-related resources available to teachers and pupils throughout Europe and the Space Office will align these resources and learning journeys to the new Northern Ireland curriculum. ...

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• Asteroids collide: nobody notices until a year later! | Astronotes
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. (WEFAX Data) . Russian . For more information send a mail to: info@sputnik.infospace.ru . ? 1997-2002 SMIS IKI RAN and RPA "PLANETA" Moscow, Russia.

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