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. ...

... The study of the Large-scale structure of the Universe and measurements of the Dark Energy equation of state; The exploration of the growth and cosmological evolution of supermassive Black holes in the Universe. ... In course of the all sky survey SRG will discover about 100 000 galaxy clusters and 3 million AGNs. Galaxy clusters are the largest gravitationally bounded objects in the Universe and are best explored through the study of X-ray emission from the hot intergalactic gas. ... 2016 IKI RAN ...

. This diagram illustrates how a background image may be repeated within the content and padding areas of a box. In this example, a background image is first centered within a box (established by the BODY element of the example). The box contains paragraphs of text, shown in gray to make them discrete. The image, a blue wavy line on a pale yellow background, is then repeated vertically, to the top and bottom of the BODY box. The effect is to create a wavy band down the center of the page. Return to image.

Authors: V.A. Marsakov , Yu.G. Shevelev , . Journal: 1988, Astron Zh. ... Absolute magnitudes, metallicities, effective temperatures, surface gravities, distances, and tangential velocities are calculated for 5498 F stars with homogeneous data on uvby photometry and proper motion, and placed within 80 pc from the Sun. Components of space velocities, eccentricities of galactic orbits, perigalactic and apogalactic distances, and maximal remotness from galactic plane are presented for 1787 stars. ...

... Russian KOI8 . ... Radio telescopes in cosmology [Russian text PDF ] . ... Excursion at RATAN-600 radio telescope, 1998 (Russian koi8): LaTeX file , gzipped PostScript file (30k) ) . ... Problems of radio astronomical data analysis, 1999 (Russian koi8: html , gzipped PostScript file (950k) ) . Radio galaxies, 1999 (Russian koi8: html , gzipped PostScript file (1012k) ). ... Practice "Selection of distant radio galaxy candidates", 1999 (Russian koi8: gzipped PostScript file (410k) ). ...

Number of spectral channels . ... Spectral channels MSU-SK #1 (#2): . ... 0,54-0,60 (0,54-0,59) µm . ... Ground Resoultion I-IV/V channels . ... Scanning Rate I-IV/V channels . ... Radiation Temperature Measurement Range in Channel V . ... Instrument Error for Radiation Temperatute Measurement in Channel V . ... Ground resolution corresponds to normal flihgt altitude 650 km. For more information send a mail to: info@sputnik.infospace.ru . ...

Общая Астрономическая Конференция > Форумы общей направленности > Любые вопросы от новичков . Supernovae - Microwave Background - Large-Scale clustering . ... Поиск . ... Созвездия (поиск и описание) .. Созвездия южного неба (поиск и описание) .. Осенние созвездия (поиск и описание) .. Летние созвездия (поиск и описание) .. ... Double Cluster (Хи и Аш Персея (Chi & h Persei), NGC 869 и NGC 884) и скопления вокруг него Звездные ассоциации - астеризмы (поиск и описание) .. ...

... The described algorithm is suitable for measurements of complex images of stars. ... a) the zero-based number of stars in the complex (multicentric) image, . b) set of preliminary coordinates - x i , y i , for all stars, index i is number of a star, . ... i - index of a star in the complex image; . ... These parameters are calculated by a nonlinear method of a least squares.The main output parameters of this algorithm are x i , y i ; where the index i is number of a star in the multicentric image. ...

... Another significant contribution to the crystal energy of metals is the electron-ion interaction or the electron bandstructure energy (E BS ) which is defined by the interaction of valence electrons and the Brillouin zone (BZ) planes. ... The program BRIZ has been developed for 3D visualization of Brillouin zone configurations and intersections of BZ planes with a Fermi sphere[4]. ... 1.75 (electrons/atom). ... 4] Degtyareva V.F., Smirnova I.S.: BRIZ: a vizualization program for Brillouin zone ? ...

... Fitting the observed dependence includes calculations of the polarization cross-sections averaged over particles orientation and size distribution, their normalization and the comparison of obtained dependencies with Serkowski's curve representing observational data for a chosen star. ... Variations of the polarization factors with wavelength are shown in Fig. 16 for homogeneous spheroidal particles with PF orientation. ... The distinction between prolate and oblate spheroids is also clearly seen. ...

. Heating the test sample. The Magnahelix and computer for recording temperature are in the background.

... Investigation into dynamics of in-orbit radiological situation both in Service Module and the ISS RS docking module, as well as accumulated radiation doses in anthropomorphic and spherical phantoms. ... Measurement of spatial and solid distributions of radiation characteristics of space ionizing radiation in pressurized compartments of Service Module and Docking Module of the ISS RS by means of scientific equipment PDA (Assembly of Passive Detectors) and Phantom (Spherical Tissue-Equivalent Phantom)...

The Youth Space Center of Bauman Moscow State Technical University conducts the workshop for space enthusiasts (only students) every year to provide participants with an opportunity to discuss the results of the year passed in space focusing on Russian and International programs, see and touch the real space hardware and meet people working on the front edge of space science and technology. ... You will go to Mission Control Center and see how the International Space Station is controlled. ...

NASA JOHNSON SPACE CENTER ORAL HISTORY PROJECT BIOGRAPHICAL DATA SHEET NAME: Wilmot Norton Hess O RAL H ISTORY: 22 April 2002 EDUCATIONAL BACKGROUND: B.S. in Electrical Engineering, Columbia University, New York City, New York, 1946 M.A. in Physics, Oberlin College, Oberlin, Ohio, 1949 Ph.D. in Physics, University of California, Berkeley, California ... NASA-TM-X-50561. ... Committee on Space Research 4th Annual International Space Science Symposium in Warsaw, Poland, 3-11 June 1963. ...

... Е 1 The 2 P1=2 3 2 P3=2 laser t ransition i n a tomic i odine and t he problem o f s earch f or signals f rom e xtraterrestrial intelligence Yu.F. Kutaev, S.K. Mankevich, O.Yu. ... It is proposed to search for signals from extraterrestrial intelligence (ETI) at a wavelength of 1.315 lm of the laser 2 P1=2 3 2 P3=2 transition in the atomic iodine, which can be used for this purpose as the natural frequency reference. ... However, no ETI signals have been reliably detected so far. ... Nosach O.Yu., ...

... This file table3 82 660 Observed wavelengths, laboratory values and identifications -------------------------------------------------------------------------------- Byte-by-byte Description ... Format Units Label Explanations -------------------------------------------------------------------------------- 1- 3 I3 --- SpOrd Spectrum order 5- 12 F8.3 0.1nm SolLam Wavelength determination of all solar and telluric lines measurable on the ... Note (6): J: Junkes et al., ...

Variations of total ozone content and lower ozone stratosphere temperature in Antarctic Region during winter-spring period A.V. Grytsai National Taras Shevchenko University of Kyiv Astronomy and Space Physics Department assen@univ.kiev.ua Data, used in the work work Total ozone: Total Ozone Mapping Spectrometer (TOMS) measurements during 1979 - 2005 and Ozone Monitoring Instrument (OMI) ones for 2006, for http://toms.gsfc.nasa.gov/ftpdata.html. ... A long-term TOC decrease is significant. ...

... Подписка на рассылку обзоров astro-ph на Subscribe.Ru . ... Astro-ph за первую половину 2003 г." . ... Нейтронные звезды и пульсары . ... Авторы проекта обзоров astro-ph . ... Самые интересные препринты astro-ph января 2003 года по материалам обзоров Архива на сайте Scientiic.Ru " . ... Authors: Paul C Hewett et al. astro-ph/0307223 Скопление галактик, спрятавшееся за М31:наблюдения RX J0046.4+4204 на XMM-Newton (A Cluster of Galaxies hiding behind M31: XMM-Newton observations of RX J0046.4+4204) . ...

... 53, Moscow, 119991 Russia 2 Moscow Physicotechnical Institute, Dolgoprudnyi, Moscow oblast, 141700 Russia Received May 26, 2008 ° Abstract--The relative intensities of Fe XI­Fe XIII lines in the range 176­207 A have been measured for various plasma structures of the solar corona using data from the XUV spectroheliograph of the SPIRIT instrumentation onboard the CORONAS-F satellite with an improved spectral sensitivity calibration. ... 2005, 2007). ... Density measurement based on Fe XIII lines. ...

... 8, ``Celestial Mechanics'', 2002 First results of GPS orbit determination with GRAPE package using a square--root information filter M. O. Keshin Institute of Applied Astronomy, St. Petersburg, Russia The zero--differenced carrier phase measurements contain the distance be­ tween the phase centres of receiver and transmitter antennas biased by unknown integer number of cycles (phase ambiguities). ... In the case of GPS the problem of solar radiation pressure modelling is of primary importance. ...