... While the resultant gains probably track the phase during the calibrator scan, what we are really interested in are the antenna gains for the program source. If you solved for a number of time intervals during the calibrator scan, the best guess at the antenna gains for the program source is derived by interpolating between some average of the calibrator scan gains. ... The task gpaver can be used to perform averaging of antenna gains. ... Average the gain table for the program source . ...

The problem of measuring the surface accuracy of a large reflector antenna is not simple. ... Using the Fourier relationship connecting the shape (and phase) of the radiation pattern and the antenna illumination function, a measurement of the former can be used to infer the latter. ... We have performed three set of measures on the CNR-IRA 32-m radio telescope (image) . 1988: Measurements using Misell phase retrieval algorithm, and the 22 GHz Orion water vapor maser as a reference source. ...

... BTA and RATAN-600 are largest optical and radio telescopes in Russia. ... Antenna of RATAN radio telescope consist of 576-m circle of 895 elements (2 x 11.5 m), which could use as four independent sectors (225 elements) of that reflector (named: North, South, West and East). Four different feed-cabines (N1,2,3,5) with secondary mirrors could simulteniously collect radio emission from these four sectors and be used in programs of Continuum , Spectral and Solar observations. ...

... The Shuttle Launches an Inflatable Antenna . ... 25.05.1996 . ... Credit: STS-77 Crew , Space Shuttle Endeavor , NASA Explanation: High above the Earth the Space Shuttle Endeavor launches a new type of instrument - an inflatable antenna. The officially designated Inflatable Antenna Experiment was released Monday, May 20th, as part of a Spartan satellite - which contains many scientific experiments. ... Publications with keywords: space shuttle . Publications with words: space shuttle . ...

Research into activity on the Sun by astronomers from Armagh Observatory, lead by Professor Gerry Doyle , have over the last six years used data from a spacecraft called SOHO (SOlar and Heliospheric Observatory). ... In late June a problem was detected in the satellite's high-gain antenna, which is used to transmit the large amounts of data from SOHO's scientific observations to Earth. This was bad news not only for Armagh astronomers but for solar physicists world-wide. ... SOHO News . ...

... 18-1 74 40.5 0.52 Cas A . 18-1 75 38.5 0.49 Cyg A . ...

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 . ...

... 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 . ...

... BOSCAM TS351 2Km Range FPV Transmitter 5.8G 200mW Audio Video Transmitter with Antenna . ... FPV Equipments : Transmitter . ... Package Contents : 1 x Transmitter, 1 x Antenna, 1 x AV Cable, 1 x Power Supply Cable . ...

RADIOASTROPHYSICAL DEPARTMENT • INSTITUTE OF SOLAR-TERRESTRIAL PHYSICS RAS SB . Radio telescope 's beam General information Main characteristics of the Radio telescope Observing programs General view of the antenna array Main research areas Principle of generation of radio images Receiving systems Main characteristics of the base receiving-recording complex Calibrations Data archive and databases Publication SSRT - Radio telescope's beam . ...

... Program of the Course of Radio Astronomy . Moscow State University , Physics Department , Astronomy Division , 4 th year, 60 hours in total) . ... Molecular maser emission. ... The emission of the interstellar neutral hydrogen. ... Pacholczyk, A. G. Radio Astrophysics, W. H. Freeman & Co., ... Frontiers of Astrophysics, Avrett, E. H., ed., Harvard University Press, Cambridge, Mass., ... Kaplan, S. A., Pikelner, S. B. The Interstellar Medium, Harvard University Press, Cambridge, Mass., ...

... Observing . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Final antenna delivered to ALMA . ... The antenna is the 66th and final antenna to be delivered to the observatory. ... This delivery of the last antenna now completes the ALMA antenna construction phase and provides all 66 antennas for science use, marking the beginning of a new era of discoveries in astronomy. ... Only registered members of Astronomy.com are allowed to comment on this article. ...

... Satellite data ] . ... PRICE of Software products for HRPT-NOAA data acquisition and processing (PC / Microsoft Windows) . ... free . ... Raw HRPT data processing: browsing, fragmentation, geo-location, storing to TDF format. ... 380 . ... XV_HRPT data acqusition . Software package for HRPT data acquisition. ... Source code template for development of XV-compatible image/data processing programs in MS-Windows. ... XV_HRPT data processing . Software package for processing of HRPT data. ...

... Telescopes . ... Diameter of circular antenna . ... Number of antenna elements . ... Geometrical area . ... Effective area of full circle . ... Wavelength range . ... Frequency range . ... 2 arcsec . ... Flux density limit . ... Absolute brightness temperature limit . 0.050 mK . ...

... History . ... The group for study of galaxies and cosmology has been created in April, 2011 and unified researchers from the laboratory of radio astrophysics (O.V.Verkhodanov, N.N.Bursov, N.V.Verkhodanova), the laboratory of antenna measurements (E.K.Maiorova) and researches from the radio astronomical sector (Yu.N.Parijskij, T.A.Semenova, V.A.Stolyarov) inside the laboratory of radio astrophysics by the order of the director of SAO according to the decision of the SAO Scientific coincil. ...

... Kraftwerk Radioactivity Is in the air for you and me Radioactivity Discovered by Madame Curie Radioactivity Tune in to the melody Radioactivity Is in the air for you and me @ SONG : Radioland Drehen wir am Radiophon (=We are turning dials of the Radio ) Vernehmen wir den Sendeton (=We are hearing the sound of transmission) Durch Tastendruck mit Blitzesschnelle (=By pressing a button fast) Erreichen wir ...

Image analysis of the VLBI experiment INTAS99.4 . PI: I. Molotov (GAO, Russia) . Analyst: A. Pushkarev (GAO, Russia; CrAO, Ukraine) . ... Frequency: 1.66 GHz . ... Antennas and their characteristics at 1.66 GHz . ... Bear Lakes (Russia) . ... Svetloe (Russia) . ... Pushchino (Russia) . ... CALIBRATION . Amplitude Calibration . Phase Calibration . ... 0420-014 . ... Quasar . ... 0420-014.gif . ... 0420+022 . ... 0420+022.gif . ... 0552+398 . ... 1308+326 . ... 1345+125 . ... 1803+784 . ...

Domes Forum Message . Forums: . ... Post . ... GPS Rebroadcast . Forum List | ... Post Message | ... Posted by Forum Master on February 13, 2007 11:50:32 UTC . ... John . ... www.astronomy.net . About Astronomy Net | Advertise on Astronomy Net | ... Unless otherwise specified, web site content Copyright 1994-2016 John Huggins All Rights Reserved . Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

SETI@home consists of a receiving Arecibo antenna, a professional team (PT), and a two-way Internet connection between the PT and an army of S@h users, who load from the S@h server special software for digital signal processing. ... Thereby, METI@home will consist of several originators, which may load via Internet from a M@h server special software for the creation of analog and digital messages. ... Professional Group SETI@home . ... Professional Group METI@home . ... Main Internet Server . ...

Cloud cover and water vapor observed at Oma site,Tibet W ang Hong-shuai (National Astronomical Observatories of China) Kislovodsk 8.10.2010 Wang Hongshuai ­ Kislovodsk ­ Oct.2010 2 2008.11 Oma Site 40 m CT 2 tow er 4.5 m antenna Satellite communication w eather station 10m tow er SBIG seeing m onitor DIMM seeing dome MIR cloud m onitor R en ew al p o w er supply Wang Hongshuai ­ Kislovodsk ­ Oct.2010 3 PWV<0.5 5 .0 % 1 0 .1 % 8 .1 % Percent. ... 05 8.3% Percent . ...