... The system temperature versus turret position has shown a bump (increase) for some receivers at the turret focal position. The receivers that had this increase also had platform focus curves where the platform focus position was lower than expected (or the horn was too high). ... After the focus change a 20 deg amplitude sine wave was done using the turret about the turret focus position. ... The plot shows the difference in Tsys versus turret position before and after the focus change. ...

Russian SHAREABLE DATA CENTER Institute of Solar-Terrestial Physics SB RAS . ... Antenna system . ... The Irkutsk incoherent scatter radar is one of the world's nine active radars which give the opportunity to investigate ionosphere by the incoherent scatter method. ... Antenna gain coefficient . ... Antenna . ... Two antennas . ... To get an idea what station "Dnepr" antenna system looks like, let us consider some of the radar views which are given by the photographs General view and Side view . ...

... ALMA . ... ARC Staff at ESO . ... The European ALMA Regional Centre (ARC) provides the interface between the ALMA project and the European science community. ... Below you can read the latest Announcements from the European ARC Network.. ... The call for 1-mm Very Long Baseline Interferometry (VLBI) proposals to use phased ALMA at Band 6 in Cycle 4, in collaboration with the Event Horizon Telescope Consortium (EHTC), will be released to coincide with the ALMA Cycle 4 Call for Proposals in March 2016...

... A eff Bandpass calibration Calibrate bandpass by observing "off source" Interferometers.... at last · Single dish : amplitude (vs frequency) · Interferometer ­ Amplitude (but no large DC term) ­ Phase ­ Delay (phase vs frequency) ATCA calibration practice · Fiducial calibrator (delays, amplitude) once per ~12 hour observation · Secondary calibrators (phase, amplitude) once per 10 minutes ~ 2 hours linear interpolation of amp, phase Phase errors Atmosphere ! ...

Observation of the Sunyaev-Zel'dovich E ect toward CL0016+16 at 43 GHz M. Tsuboi et al. Ibaraki University, Japan We performed a mapping observation of the Sunyaev-Zel'dovich e ect toward a distant cluster of galaxies, CL0016+16, at 43 GHz using a newly developed 6-beam SIS receiver installed in the Nobeyama 45-m telescope. The temperature decrement of the cosmic microwave background radiation was measured to be
T  A = 0:490:05 mK at the central position of the cluster. ...

Radio Interferometry Principles . Radio Interferometry Signal Processing . ... A radio interferometer consists of a pair of directional antennas that are tuned to receive radio emissions from a source in a desired RF band. ... The antennas are pointed at the radio source of interest and are set up to receive the signal and process it into a form suitable for transmission to the correlator. ... In connected element interferometry, the digital signal goes directly to the correlator. ...

... Graduated from Moscow State University in 1970 and till now in permanent staff of the Sternberg Astronomical Institute, Moscow State University. ... Member, Euro-Asian Astronomical Society . ... Jointly with Dr. V.Konnikova, I teach a course in Radio Astronomy at the Astronomy Division , Physics Department of Moscow State University . ... Astronomical Meetings . ... Net Search: MetaCrawler . ... Moscow State University . ... Rudnitskij, Georgij M. Page last updated November 25, 2015. th . ...

National Aeronautics and Space Administration . Lyndon B. Johnson Space Center . ... William A. Anders (Major General, USAF Reserve, Ret.) NASA Astronaut (former) . ... EDUCATION: Received a bachelor of science degree from the United States Naval Academy in 1955 and a master of science degree in Nuclear Engineering from the Air Force Institute of Technology at Wright-Patterson Air Force Base, Ohio, in 1962. ...

... Prognoz Launches . ... Images . ... antenna of the low-frequency radiation receiver of the electromagnetic field . ... panel of solar batteries . magnetometer bar Prognoz is the name of the once soviet Earth research artificial satellites (ISZ for Russian) meant to study processes of solar activity, their influence on interplanetary environment and the Earth magnetosphere. ... solar wind and magnetosphere study . ... Full image is 61k . Full image is 52k . Full image is 60k . ...

... SMIS ] . noise temperature of the low noise amplifier less than 100 K . automatic frequency and polarization adjustment of the received signal . double transform of frequency . power supply: single phase, 220 V, 50 Hz . power consumption: less than 30 Wt . the unit measures: 470 x 300 x 130 mm . weight: less than 10 kg . ... Back to SMIS Home Page . ...

... On-line calibration consists of calibration operations performed to maintain the ALMA observing system properly tuned to successfully execute the planned observations. ... Among processing operations are the calibration of the atmospheric absorption, of phase radiometric correction, of pointing scans, of phase and amplitude reference measurements, .. ... In the mean time tests of the calibration software will proceed using both simulated data and data from the antenna prototypes...?re 1 . ...

This page provides explanatory text for the dials shown on the Rice Current Solar Wind Conditions and Current Solar Wind Conditions (Dials Only) webpage. These dials use the last good received set of measurements from the Real Time Solar Wind package on the Advanced Composition Explorer (ACE) spacecraft. ... Measured) This quantity is the number of solar wind protons per unit volume as measured by the ACE Solar Wind Electron Proton Alpha Monitor (SWEPAM) . ... It is measured by ACE/SWEPAM. ...

Superconducting Integrated THz Receivers: Development and Applications li t i Outline · · · · · · Superconducting Integrated Receiver ( SIR ) Flux Flow Oscillator ( FFO ) for the SIR TErahertz LImb Sounder ( TELIS ) project ( TELIS ) Results of the TELIS flights Future SIR applications Conclusion 2011 , September 22 Centennial Superconductivity Conference 2011 2 Superconducting Integrated Receiver ( SIR ) with phase-locked ...

... Forum . ... Recent Topics . ... MAO main . Info . Fwd: two postdoc positions available . ... Board Categories MAO main - Info - MAO - news - Flame Technical - Technical Support(Forum)(пўпµя…пїпѕпґпґпµяЂп¶пєп°(п¤пѕяЂяѓпј)) . ... Powered by Kunena Forum . ... MAO NASU . ...

... A. M. Neminsky, P. N. Nikolaev, and D. V. Shovkun . ... The temperature dependence of the magnetic field penetration depth lambda ( T ) is determined down to 0.2 T c by the ac-susceptibility measurements on the Rb 3 C 60 fine powder with small, about 1 K, variation in the grains' superconducting transition temperatures. The lambda ( T ) temperature dependence is exponential at low temperatures, which allows us to determine the energy gap Delta 0 =1.7 k B T c . ...

... Dubna (24-28, 01,2005); . ... Representation Theory and Quantum Inverse Scattering Method: The Open Toda Chain and the Hyperbolic Sutherland Model, (together with A. Gerasimov, S. Kharchev), International Mathematical Research Notices (2004), no.17, 823--854. arXiv:math.QA/0204206; Preprint MPI. ... On a class of representatios of quantum groups (together with A. Gerasimov, S. Kharchev and S. Oblezin) Contemporary Mathematics v. 391 (2005) 101--110. arXiv:math.QA/0501473 Preprint MPI 2005(17); . ...

RadioAstron - the International Ground-Space Radio Interferometer The Russian-Indian on-board 92 cm receiver The 92 cm (327 MHz) receiver (marked as --92, or P-SRT-92 device) is one of the four high frequency receivers of the RadioAstron Space Radio Telescope (SRT). ... The P-SRT-92 is a low noise receiver coupled to the feed at the focus of the parabolic dish. ... Then this LNA was integrated by Russian engineers into the P-SRT-92 receiver section. ...

... In the past we have proposed a "Wave Front Sensor" (WFS) that would: (1) sense the wave front tilt, and (2) compensate in (quasi) real-time for the phase gradient across the antenna aperture by tilting the subreflector. ... 3 This section by L. Olmi and D. Hiriart WFS, cross-polarization, seeing-monitor 5 The signal source is the monochromatic tone beacon broadcasted by the Mexican communication satellite Solidaridad II at a frequency of 11.715 GHz. ...

Beginning from the May of the 1997 we started to publish our daily solar radio observations at RATAN-600 radiotelescope. ... Periscope System: South Sector+Flat Mirror . ... It is possible to track a source by moving the secondary mirror along the arc-shaped railway tracks or to perform azimuthal 2D map synthesis . ... 1) It is possible to simultaneously carry out independent observing programs using individual sectors at various discrete azimuths and secondary mirrors on corresponding railway tracks. ...

... The thesis was titled "Numerical modeling of chemical evolution of galaxies". ... Kurbatov E.P., Kinematic effects of velocity fluctuations for the dark-halo population in a LmabdaCDM model , 2014 Astronomy Reports, Vol. ... ADS Preprint . ... Kurbatov E.P., The influence of OB associations decay upon evolution of dwarf galaxies , 2010 Astronomy Reports, Vol. ... Kurbatov E.P., Tutukov A.V., Shustov B.M., Evolution of galaxies and the Tully-Fisher relation , 2005 Astronomy Reports, Vol. ...