Next: Scattering properties Up: Polarization properties (transmitted radiation) Previous: Linear polarization: wavelength dependence . Traditionally, the main problem considered in connection with circular interstellar polarization is the meaning of the wavelength where changes the sign . ... This is also demonstrated by Fig. 19 (lower panel) which shows the wavelength dependence of the factors of linear and circular polarization for particles of magnetite as was done by Shapiro ([ 1975 ]). ...

Abstract -- The strengths of magnetic fields in interstellar gas clouds are obtained through observations of the circular polarization of spectral line radiation. ... To infer information about these irregularities from the observational data, we develop statistical relationships between the rms values of the irregular component of the magnetic field and spatial variations in the circular polarization of the spectral line radiation. ...

Подписка на рассылку обзоров astro-ph на Subscribe.Ru . ... Предыдущий выпуск (N335) . ... Обсудить на форуме Scientific.RU . ... Подписка на рассылку обзоров на Subscribe.Ru . Обзоры препринтов astro-ph . ... Собственно обзоры препринтов. ... Ранее обзоры также были на Астронете и на Scientific.Ru . ... АНКи доступны на Астронете , а с 2006 по 2008 г. также на сайте Элементы.Ру . ... Ранее они также размещались на сайте Астронет и в архиве моих обозрений (кодировка KOI8) на сайте Scientific.Ru . ...

... Tobia Carozzi Onsala Space Observatory Chalmers University, Sweden AAVP workshop, Cambridge, 8 Dec 2010 Tobia Carozzi SKA polarimetry Motivation Cross-polarization Eect of IXR on SKA science Summary SKA Polarimetry Brief Polarization purity a.k.a is a key parameter in SKA sp ecication cross-p olarization ratio ( ... Dep ends on calibration & science: If only raw calibration => IXR (or raw XPR) needs to be good If full calibration => IXR can be much less! ...

Instrument . ... Scanning TV-sensor with on-board data recording system for global coverage mode . ... recording, direct transmission . ... IR-radiometer for global coverage and direct data transmission modes . ... The scientific instrument package onboard the Meteor-3 spacecraft provides for regular instant acquisition of images of cloudiness and Earth surface in visible and infra-red bands, data on air temperature and humidity, sea surface temperature and clouds temperature. ...

RFI SUBTRACTION WITH A REFERENCE HORN: APPLICATION TO PULSARS AND VLBI F. H. Briggs (1) , M. J. Kesteven (2) (1) Kapteyn Astronomical Institute, Postbus 800, 9700AV Groningen, The Netherlands, fbriggs@astro.rug.nl (2) CSIRO Australia Telescope National Facility, P.O. Box 76, Epping, NSW 1710, Australia, mkesteve@atnf.csiro.au ABSTRACT Cross correlation of an RFI reference signal with the corrupted radio astronomy data ... Fig. ... PHASE A B C D 1 2 1 2 1 2 1 2 Fig. ...

A spectrometer with 16 input channels (8 dual polarization), based on the ALMA Tunable Filter Board. ... A. Russo, G. Comoretto: Spettrometri a correlazione e a FFT per il radiotelescopio SRT , Arcetri technical report 1/2005 . G. Comoretto, A. D'Ambrosi, R. Nesti, A. Russo, F. Palagi: A modular multichannel spectrometer - design study Arcetri technical report 4/2006 . ... G. Comoretto, G. Tuccari: Reference design for the Digital BBC Architecture Arcetri technical report 2/2008 ...

... Left: A POSSM plot of the uncalibrated spectrum of DA 193 at 1.66 GHz on a baseline Bear Lakes to Noto. ... The phase slope as a function of frequency is clear evidence for a small delay error in the correlator model. Right: The same data as shown on the left, but corrected for a delay error and a residual fringe rate. ... Left: A VPLOT plot of the uncalibrated amplitude (upper frame) and uncalibrated phase (lower frame) as a function of time for the source DA 193 on a baseline HartRAO to Noto. ...

Communications For Your Astronomy Event . Articles | ... The FCC agreed and in 1996 created the Family Radio Service (FRS) as one of the Citizens Band Radio Services. ... You are provided authority to operate a FRS unit in places where the FCC regulates radio communications as long as you use only an unmodified FCC certified FRS unit. ... Frequencies Used 462.5625-467.7125 MHz . FRS Channel Plan . ... 0.5 Watts . ... www.astronomy.net . ... dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

... Basic Research results 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 Radio telescope's beam Receiving systems Main characteristics of the base receiving-recording complex Calibrations Data archive and databases Publication of data Possibilities of observing the structure and dynamics of microwave activity SSRT - Research results . ...

... It has to do with tweaking the HSV channels of an image. ... HSV is a color model that defines colors based on their Hue, Saturation and value. ... Value . ... White values in this channel have the maximum brightness, black values have no brightness at all. ... Note that the Saturation is at the maximum values (giving the purest colors) and the Value is at the maximum values as well (giving the brightest colors). ... Hue, Saturation, and Value, this time with the Value set to half the maximum value....

... The top panel shows Stokes I (black solid line, in arbitrary units, and not corrected for the instrument response), P V (red solid line centred about 0), and the null profile (blue solid line, offset by -0.75 % for display purpose). ... The slope of the red interpolating lines in the bottom panels gives the mean longitudinal field from P V (left panel)and from the null profile (right panel, the latter being expected zero), both calculated using the H Balmer lines only. ...

... A procedure for calibrating fits images from Ondrejov Multichannel Flare Spectrograph. Download CALIB.PRO . Download HALPHA.TAB . ... A procedure for extracting profiles from FITS files. ... Version of the program calibration: 12.3 for windows + SSW ( SolarSoft is a set of integrated software libraries, data bases, and system utilities which provide a common programming and data analysis environment for Solar Physics.) ... Download ASTROLIB.ZIP Here you can download library for fits files. ...

Astronomy Picture of the Day . ... 9.05.1998 . ... NASA/GSFC ) and The GOES Project Explanation: What alien planet's bizarre landscape lurks below these fiery-looking clouds? It's only Planet Earth , of course ... as seen on the Water Vapor Channel. Hourly, images like this one (an infrared image shown in false color) are brought to you by the orbiting Geostationary Operational Environmental Satellites' (GOES) multi-channel imagers . ... Publications with keywords: water - infrared . ...

... Калибровка снимка - это удаление из него паразитной информации, которая включает в себя: темновой шум, горячие пиксели, шум считывания (ток смещения), а также тени от пыли на матрице и оптике. Для калибровки снимка нужно подготовить снимки с паразитной, т.е. нежелательной информацией. В первую очередь нам нужно получить мастер-кадр шума считывания (ток смещения), на западе снимок шума считывания называют Bias или Offset . ... Уровень темнового шума сильно зависит от температуры матрицы. ...

... Aladen AL 5668 - удобные демисезонные полусапожки от белорусской фабрики 'ALADEN'. ... Цвет: черный. Aladen . ... title=' Постельное белье Esspero Polar Bear (3 предмета) - EssperoPolar Bear (3 предмета)' border='0' align='left' width='120' style='margin-right: 20px;' hspace='7' vspace='5'/> Комплект сменного белья Esspero Polar Bear состоит из трех предметов постельного белья для малыша, требующих наиболее частой смены. ... Цвет плафонов и подвесок: неокрашенный . Цвет арматуры: хром . ...

ENERGETIC PARTICLE EXPERIMENT DOK-2 . ... Due to much higher energy, angular and time resolution, better separation of electrons and ions it is expected that DOK-2 experiment will allow to re-examine in more details energetic particle population and related processes in magnetosphere regions covered by the spacecraft orbit. ... Thin foil in front of detector absorbes protons with energies E<400 keV so this detector measures electron spectrum in 20 - 420 keV range. ... Energy values, keV . ...

... Package . Class . ... PREV PACKAGE NEXT PACKAGE . FRAMES NO FRAMES All Classes . Class Summary . ... Displays the ImageJ Channels window. ... Implements the Image/Color/Color Picker command. ... This plugin implements the Brightness/Contrast, Window/level and Color Balance commands, all in the Image/Adjust sub-menu. ... ImageJ plugin that does curve fitting using the modified CurveFitter class. ... Implements ImageJ's Paste Control window. ... This is ImageJ's macro recorder. ...

... A new version of a polarization analyzer ensuring parallel measurements of six polarization components of spectral lines is considered. ... A new version of the polarization analyzer, which ensures simultaneous measurements of six polarization components of a spectral line, is considered. ... One of the widespread schemes for magnetic fields measurements includes an tunable optical filter, an adjustable polarization analyzer, and a two-dimensional CCD array placed in the solar image plane [1, 2]. ...

The English Channel is one of the world's most extraordinary pieces of water. ... Sailors know it as perhaps the most dangerous sea channel in Europe. ... The Channel stretches 350 miles, from the Atlantic ocean to the North sea, separating England's south coast from France's north coast. ... It must be mentioned that the sea in the Channel is usually cold, and swimmers must cover their bodies with grease to protect their bodies. ... But swimming enthusiasts are not stopped by the difficulties. ...