Towards celestial sources above 1 THz with a heterodyne receiver based on a hot-electron bolometer mixer Sergey Ryabchun, Ivan Tretyakov, Matvey Finkel, Natalia Kaurova, Boris Voronov and Gregory Gol'tsman HOT-ELECTRON BOLOMETER (HEB) MIXER Scient ific and Educatio nal Radiophysics Center Mo scow State Pedago gical University Mo scow, Russia FIRST GROUND-BASED OBSERVATION WITH HEB MIXERS BEYOND 1 THz Submillimeter Telescope ...

... Киевский клуб любителей астрономии "Астрополис" > . ... For english speaking users (Moderator: LifeIsGood ) . ... Астрономия . ... Жизнь клуба . ... Астрономия в Украине . ... Любители и профессионалы. ... Бердянское общество любителей астрономии "ОРИОН" . ... Одесское общество любителей астрономии ?АСТРОДЕС? Портал белорусских любителей астрономии - BelAstro.Net . ... Dear English speaker .. ... 22 Март 2010, 13:22:36 . ... Showing Apollo 13 Tonight, Documentary on Same Topic Next Week . ...

Main News Phones Research area Brief history Institute Structure Experimental Base Observational data English/Russian . research on the site(Google) . ... 677980 Yakutsk, Russia . ... 7(4112)390400 . Fax: . 7(4112)390450 . ... The Yakutsk Cosmic Ray Spectrograph . ... Phone: +7(4112) 390-455 . ... Fax: +7(4112) 390-450 . ... It is for the research of cosmic rays with the energy 10 17 -10 20 eV . ... cosmic ray intensity in energy range from 10 17 -10 20 eV . ...

ABSOLUTE PROPER MOTIONS OF 331 OPEN CLUSTERS . ... The proper motions of stars in the fields of 331 open clusters were taken from Four-Million Star Catalog (4M-catalog) of positions and proper motions (Volchkov et al. ... The absolute proper motions for 21 young open clusters have been derived by comparison of precise relative proper motions of individual stars and their corresponding absolute proper motions. ... Sign of proper motions in RA . ... 0.0001 arcsec/yr . ... rms error in RA proper motion . ...

Statistics of sunspot activity . The sunspot indices . ... Visual indices of solar activity . ... n - number of spot groups . A - Waldmeier class of unipolar spot groups without penumbra . B - class of bipolar spot groups without penumbra . C - class of bipolar spot groups with one penumbra pole . D - class of small bipolar spot groups with two penumbra poles . E - class of middle bipolar spot groups with two penumbra poles . ... H - class of unipolar penumbrated spot groups . ...

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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? ...

. Предисловие. Введение. Глава 1. НЕМНОГО ТЕОРИИ. 1. Свет, оптические детали и характеристики систем. 2. Конические сечения. Поверхности вращения. 3. Как работает телескоп? . 4. Простейший телескоп. 5. Аберрации. 6. Ахроматические линзы. 7. Идеальный объектив и тонкая структура изображения. 8. Разрешающая сила телескопа. 9. Предельные увеличения телескопа. 10. Эффективность телескопа. 11. Типы телескопов.

... INVESTIGATION OF JOINT EFFECT OF TWO . MECHANISMS OF PROBE WAVE ANOMALOUS ATTENUATION . ... As it follows from the title of our paper, I shall speak about two mechanisms of anomalous attenuation, one of the basic effects been observed under ionospheric heating by powerful HF waves. ... The second mechanism of anomalous attenuation is multiple scattering. ... Perhaps, anomalous attenuation been observed at Arecibo will be easier explained by multiple scattering mechanism. ... O-wave only . ...

... 4 .D.Dolgov (INFN, Ferrara, Italy) STOCHASTIC BACKGROUND GRAVITATIONAL WAVES FORM PRIMORDIAL BLACK HOLES OF G.Tsarevsky (PRAO ASC LPI) PROJECT "RADIOASTRON" AND THE FUTURE OF SPACE RADIOASTRONOMY V.N.Melnikov (VNIIMS, Moscow) SCALAR FIELDS AND MULTIDIMENSIONAL MODELS IN GRAVITY AND COSMOLOGY Wednesday, 24.08.2011 Cosmology, Gravitation and High Energy Physics Conference hall "Sovinyon" 09.00 ? ... 8 Section 2. Astrophysics University Recreation Centre "Chernomorka" (2 ) Tuesday, 23.08.2011 14.30 ? ...

Please enter the lightcurve file name and period search parameters: . Lightcurve file: . ... Apply the Heliocentric correction and convert all dates to Terrestrial Time (TT)? ... Also, the Heliocentric correction cannot be applied to such lightcurves. ... This period search service is also available at the mirror sites: Mirror 1 , Mirror 2 , Mirror 3 , Mirror 4 . You may download the latest source code distribution and install the period search service at your own web server. ...