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? ...

The AstroGuide . ... AstroGuide | ... AstroGuide Listing . ... Amateur Telescope Making Journal 23 . ... www.astronomy.net . About Astronomy Net | Advertise on Astronomy Net | ... Unless otherwise specified, web site content Copyright 1994-2016 John Huggins All Rights Reserved . dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . are trademarks of John Huggins ...

... The source exhibits a mas-scale structure which, according to the USNO multi-epoch monitoring at 2.3 and 8.4 GHz over the period from 1994 July through 1998 April, undergoes considerable changes in the brightness distribution and positions of the major structural features. Our image is qualitatively consistent with the structural pattern of the source. ... We note a difference of ~90 in position angles of secondary components in our image and the 5 GHz VLBI image by Shen et al. 1998). ...

... Spherical aberration, coma, and astigmatism are also easily observed using the star test. ... Off-axis images are complex. ... Fig. ... Diffraction by a circular aperture as a function of defocus for no aberration Airy Disk 1 wave defocus Less than 1 wave defocus Fig. ... Diffraction by a circular aperture as a function of defocus for third-order spherical aberration Paraxial Focus Small distance inside paraxial focus Moderate distance from marginal focus Immediate neighborhood of marginal focus Fig...

... The program Conspiracy Theory: Did We Land on The Moon? seen on FOX television network (2/15/01) advanced the claim that NASA's Apollo Moon missions were a giant hoax. ... In our view the Apollo pictures were faked. ... Illumination in Shadow: FOX narrator: "On the Moon, the astronaut's only source of light was the Sun.. ... The two side-by-side photos show a test I conducted with a model of the lunar module and a toy astronaut placed in its shadow as in the Apollo image above. ... Apollo 11 Faked? ...

... Printed in the U.S.A. HIGHLY IONIZED POTASSIUM LINES IN SOLAR X-RAY SPECTRA AND THE ABUNDANCE OF POTASSIUM J. Sylwester1 , B. Sylwester1 , K. J. H. Phillips2 , and V. D. Kuznetsov3 2 Space Research Centre, Polish Academy of ... Troitsk, Moscow, Russia; kvd@izmiran.ru Received 2009 December 5; accepted 2010 January 6; published 2010 January 21 1 ABSTRACT The abundance of potassium is derived from X-ray lines observed during flares by the ...

... 33, No. 1, pp. 62­71. i Formation of Power-Law Electron Spectra in Collapsing Magnetic Traps S. A. Bogachev 1 1* and B. V. Somov 2** Lebedev Institute of Physics, Russian Academy of Sciences, Leninski i pr. ... It is shown that if the electrons injected into the trap have a power-law spectrum, then their spectrum remains a power-law one with the same slope throughout the acceleration process for both the Fermi and betatron acceleration mechanisms. ... They do not coincide at energies below 20 keV. ...

АСТРОНОМИЧЕСКИЕ АДРЕСАТЫ INTERNET Subject: Introduction to sci.astro Sender: jl26@cornell.edu (Verified) Distribution: world sci.astro is a newsgroup for the discussion of astronomical topics. ... There are six groups in the sci.astro hierarchy: sci.astro Astronomy discussions and information. sci.astro.amateur Amateur astronomy equipment, techniques, info, etc. sci.astro.fits Issues related to the Flexible Image Transport System. sci.astro.hubble Processing Hubble Space Telescope data. ...

... Research Innovation . ... University Conferences . ... Series . ... History of Ukraine. ... Physics? ... Antiquities (Kharkiv Historical and Archeological Yearbook) . Drinov Journal . ... Pedagogy Department Journal of Collected Articles . ... Research Journals . ... Web site: http://periodicals.karazin.ua/eejp . The East European Journal of Physics addresses the fundamental and applied research in contemporary areas of physics: . ... Copyright 2010 V.љN. Karazin Kharkiv National University. ...

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... SHORT TERM PREDICTION OF POWER SOLAR FLARES FROM SSRT DATA . The algorithm for short term prediction of powerful solar flares, based on SSRT data, includes microwave emission characteristics in total and polarized flux, the structure of active region (AR) magnetic field at the photospheric level, and H a patrol data. ... During this period, 7 AR's crossed the solar disk, in which 20 flares of importance ? ... Data on AR's and magnetic fields were received from the Sayan observatory by teletype. ...

... Our Galaxy . ... Stars . ... Spiral arms are home to much more than just the brightest stars, however. ... Spread along the bright spiral arms can be seen prominent dark lanes, clouds of molecular gas and dust which obscure the visible light. ... The spiral arms are lit up by the extraordinary luminous young massive stars that are born within the dark clouds of molecular gas that lie along the arms. ... This interpretation тАУ of a spiral galaxy with active star formation within it тАУ is not...