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 . ...

... Research objects and scientific purposes . Space scientific program includes development and launch of two supersmall spacecrafts "Universitetskiy" and "Kompas-2" intended for monitoring of radiation conditions near the Earth. ... All the studies conducted in the near-Earth space are characterised by strong radiation fields. ... The circular polar orbits, which cover all the near-Earth space, are the most favorable for comprehensive studies of the radiation conditions near the Earth. ...

From: TerryMosel aol.com Date: 25 May 2007 01:14:25 May 2007 Subject: Dublin Lecture: "Deciphering the Big Bang" Hi all, As previously notified, the next RIA/DIAS/Times public lecture will be on 12 June in TCD. ... Book online as below, or by T/C. To book free tickets please log on to www.ria.ie Anisa Dervishi Executive Assistant Royal Irish Academy 19 Dawson Street Dublin 2 Telephone: +353 1 676 2570 (main switchboard) Fax: +353 1 676 2346 www.roa.ie Clear skies, Terry Moseley . ...

... Lightning and Lightning Protection, Wm. ... Lightning characteristics: A lightning stroke typically has several current pulses, all of the same polarity. Successive pulses have lower peak currents but last longer and transfer more charge. ... The typical stroke has four pulses, separated by 42 ms. This model pulse is shown in three Mathcad plots of current (in Amperes): the leading edges of each pulse, the duration of each pulse, and the complete 4-stroke pulse. 2 a1 1 5 4.8 . ...

... 2006: . ... Components of the systems are low mass stars and white dwarfs. For 14 pairs orbit parameters were calculated and masses and luminosities of components were determined for the first time. ... As a result of a multifrequency monitoring of the variability of a micro quasar Cyg X-3 (X-ray binary system which probably consists of a black hole and a high mass Wolf-Rayet star) a high activity period was registered for the first time in the last 4 years. ... Archive . ...

Institute of Applied Astronomy Russian Academy of Sciences Method of Determining the Orbits of the Small Bodies in the Solar System Based on an Exhaustive Search of Orbital Planes Dmitrii Vavilov, Yurii Medvedev Introduction to the problem: Let we have n 3 positional observations of a body: points in time ( = 1, ) , right ascensions , and declinations . ... Determination of the orbit using the Gauss method of determining orbital elements based on two heliocentric positions and points in time. ...

... AMPLE (Adaptable Minor Planet Ephemerides) is integrated software package to deal with a number of problems concerning minor planets with the aid of IBM-type personal computer. ... compiling a list of all numbered minor planets which can be seen at certain moment within specified sky region and visualization of their mutual positions; . ... As AMPLE is able to reproduce virtually any table of "the Ephemerides of Minor Planets" , it may be considered as computer version of the EMP. ...

... After all we cannot send a probe to the star Altair to confirm that it is 17 light years away. ... The "Bessel determined that the star 61 Cygni was about ten light years away" Earth goes around the Sun in one year, so in six month it is in the opposite position in its orbit. ... In 1838 Bessel determined that the star 61 Cygni had a parallax of 0.314 arcseconds and therefore the star was about ten light years away (today the distance is more precisely measured to be 11.4 light years). ...

... Time calculated from Fermi GBM Trigger Time = 14:12:08.67 ( Connaughton, GCN 9230 ). 1% coincident with our start zero image time. 3x3 degrees around Swift XRT position . ... SUBJECT: GRB 090424 : MASTER-Net prompt optical limit DATE: 09/04/25 20:29:42 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs E. Gorbovskoy, V. Lipunov, V.Kornilov, A.Belinski ... Our observations results: ---------------------------------------------------------------------- Fermi GRB Trigg.* ...

Next: Imaging Polarimetry with NICMOS Up: NICMOS Data Calibration and Previous: The Photometric Performance of . ... NICMOSlook and Calnic C . ... Extracting spectra from a large number of NICMOS grism images requires a convenient interactive tool which allows a user to manipulate direct/grism image pairs. ... NICMOSlook and Calnic-C are two programs that were designed to take advantage of the fact that the NICMOS grism mode typically consists of taking both a direct and a grism image. ...

Class 1 Introduction, Background History of Modern Astronomy The Night Sky, Eclipses and the Seasons Kepler's Laws Newtonian Gravity General Relativity Matter and Light Telescopes Class 2 Solar System Characteristics Formation Exosolar Planets Class 3 Stars The S un Stellar Evolution of Low and High Mass Stars Deaths of Stars Exotic Stars Class 4 Galaxies Galaxy Classification Formation of Galaxies Galactic ... Low mass stars live and die differently than high mass stars. ...

... 2000 May 9 . The Race to Reveal Our Universe . ... Explanation: A race is underway to understand our universe through background radiation produced during its infancy. Observationally, increasingly accurate balloon experiments are pressing to beat future space-faring satellites to definitive measurements of universe-determining spot characteristics of the cosmic microwave background (CMB) radiation. ... About APOD | ... NASA Technical Rep.: ... A service of: LHEA at NASA / GSFC . ...

Welcome to K -corrections calculator, simple service allowing one to determine K -corrections of a galaxy, given its redshift and one or more colours. ... K -correction in choose filter.. ... Redshift . Colour choose colour.. Colour value . Calculator . ... calculate spectral energy distributions , K-corrections calculator , GALEX FUV NUV , UKIDSS YJHK , K-corrections of galaxies , spectral based k-corrections , SDSS filter set K-corrections , K correction code IDL , kcorrect IDL C , . ...

... Tonight's Sky . ... The Magazine . ... Observing . ... Star Atlas . ... stars . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Astronomy for Kids . ... Observing springtime deep-sky objects with a large telescope . ... How do astronomers determine the ages of stars? ... Get instant access to subscriber content on Astronomy.com! ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ... Astronomy Magazine ...

... Correlation between the Near-Earth Solar Wind Parameters and the Source Surface Magnetic Field A. V. Belov, V. N. Obridko, and B. D. Shelting Institute of Terrestrial Magnetism, Ionosphere, and Radiowave Propagation, Russian Academy of Sciences, Troitsk, Moscow oblast, 142190 Russia Received February 16, 2005 Abstract--The solar magnetic field Bs at the Earth's projection onto the solar-wind source surface has been calculated for each day over a long time interval (1976­2004). ...

... Bad Astronomy . ... Bitesize Astronomy . ... Mad Science . ... Keep Bad Astronomy close to your heart, and help make me filthy rich. ... Area of science: Astronomy . ... The Mad Scientist archives have a good essay on measuring the earth-sun distance, but the description of Cassini's technique is too terse for me to fill in the gaps. ... In that I mention that Cassini used Mars to find the length of the astronomical unit (also called an AU, the distance of the Earth to the Sun). ... 2008 Phil Plait....

... Hartmann Test Using a Screen With Four Holes 2 Hartmann test with four holes screen The theoretical concept of the primary aberrations measurement by four apertures Hartmann test introduced by "Malacara" * and "SalasPeimbert et. al. ... Black curve show the calculated coefficients for phase screens which have 8 modes of Zernike aberrations and red curve show the calculated coefficient for original phase screen. (a) astigmatism 45 (b) astigmatism 090 14 Coma Coma modes of Zernike aberration. ...

Magnification (Power) And Using Eyepieces . ... To determine power in a telescope, divide the focal length of the telescope by the focal length of the eyepiece. By exchanging an eyepiece of one focal length for another, you can increase or decrease the power of the telescope. For example, a 25mm eyepiece used on a telescope with a 1000mm focal length would yield a power of 40x (1000 / 25 = 40) and a 10mm eyepiece used on the same telescope would yield a power of 100x (1000 / 10 = 100). ...

Next: Reduce point data Up: Quick Guide Previous: Print form sheets Contents . You should reduce this data of type ``scan'' before anything else. ... Plot the background rate (four channels at a time) versus time. ... Use P ROCESS BG if you want to replace edited scans with an average value from other valid scans in the same channel. ... The reason for reducing the background data first is that average will not average the point data of a scan for which no background data exists. ...

Short Notes phys. stat. sol. (a) K2 1 K21 (1975) 27, Subject classification: 18.2: 21.1; 21.1.1 Solid State Physics Institute, Academy of Sciences of the USSR, Chernogolovka The Effect of Pressure on the Curie Points of Fe-Ni-Cu and Fe-Ni-Mn Alloys BY V.E. ANTONOV, G.T. DUBOVKA, and E.G. PONYATOVSKII There is a series of papers on the effect of pressure on the Curie points T of C Fe alloys with other transition elements. ... The dependence of the Curie points on pressure is linear. ... 1 Fig. ...