Next: Catalog Construction Up: Observations and Analysis Previous: Source Detections . ... It was assumed that the highest signal gives the most likely position of the source. ... Comparing the summed map with the maps from the individual energy ranges, the one which produced the smallest error box was chosen to represent the source position, as long as was greater than 4, a level chosen to reflect a reasonable degree of confidence in the detection. ...

This page holds the archived system performance data (the current data is on the system performance page) . ... Gain,Tsys,Sefd.. Coma,sidelobes, beam efficiency . Pointing errors. Az,za coverage . Hour of day when sources measured. 01sep01 thru 30jul02 (cooled receiver to - room temp amps installed) . ... Hour of day when sources measured (.ps) (.pdf) . ... Hour of day when sources measured. 21aug02 thru 01feb03 (horn focus change to reshimming of elevation rails, pointing model). ...

... This chapter discusses some of the error sources associated with WFPC2 data. Most of the chapter focuses on specific calibration errors, complementing and partially overlapping the discussion given in "Improving the Pipeline Calibration in section 3.5 . ... Note that many of the error sources affecting calibrated WFPC2 data can be reduced by either recalibration with newer reference files or post-pipeline improvements, such as correction flatfields (see section 3.5.2 ). ...

... Meta Index / Home Page This section documents warnings and errors generated by this task (if any). ... error . ... The instrument recorded in the source list header keyword INSTRUME is not the same as that derived from the value of the instexpid parameter. corrective action: The task uses the value from the source list header. expIdStrClash . ... If clobberonlabel =no, this condition causes the task to fail with an error. corrective action: New source is not appended to the source list. outsideFOV ....

... A comparison of the computed and experimental relations F max ( H), as well as comparison of drift scans of point sources across different horizontal cross-sections of the BP with the corresponding computed cross-sections were made. ... The drift scans of the point source 3С84 (H=87 o ) at the wavelength 7.6 cm across the horizontal cross-sections of the BP (black lines) and the computed horizontal cross-sections of the BP corresponding to them (red lines). ...

... Optical photometric data were taken of fields encompassing all these sources during a total of seven telescope runs. ... The initial goal of the photometric observations is to follow up the X--ray sources, assign them colors in a standard system, so that the observed objects can be placed on a color--magnitude diagram. This can be used to verify that the X--ray sources are indeed PMS stars. ... Aperture photometry was performed using the APPHOT package in IRAF. ...

Since the 1980s VLBI observations at two frequencies, 8.4 (X-band) and 2.3 GHz (S-band) have been used to locate the positions of compact radio sources with unprecedented accuracy. ... Observations of selected strong compact extragalactic radio sources, using this now mature technique, have been used to define and maintain a radio reference frame with sub-milli-arcsecond (mas) precision. ... Additionally, it will provide more reference sources for phase referencing VLBI observations. ... References . ...

The Texas survey of radio sources covering -35.5{deg} < {delta} < 71.5{deg} at 365MHz . ... We present the Texas Survey of discrete radio sources between -35.5deg and 71.5deg declination (B1950), which was carried out at 365MHz with the Texas Interferometer during 1974-1983. ... The Texas Survey . ... The sources in the simpler model. ... Right Ascension 1950 . ... field separator . ... Some sources came from Version 6 of the Texas Survey ('TS6' in strp field) or Version 7 ('TS7' in strp field) . ...

Next: Status of the BIMA Image Pipeline . ... We describe all the steps of the standard reduction including per pixel error propagation: Bias correction, treatment of bad pixels, flatfielding, and filtering of cosmic ray events. ... We build difference images via image convolution with a technique called OIS (optimal image subtraction, Alard & Lupton 1998), proceed with PSF-fitting, relative photometry on all pixels and finally apply an automatic detection of variable sources. ...

Russian Academy of Sciences Pulkovo Observatory On systematic and stochastic errors of radio source position catalogues Zinovy Malkin Pulkovo Observatory and St. Petersburg State University malkin@gao.spb.ru JournИes 2013, Paris, France, September 2013 Topics to discuss The following topics related to the radio source position catalogues are considered: 1. ... A new approach to assess the external stochastic errors of radio source position catalogues has been presented. ...

... Bojan Nikolic web pages (r. 329) . ... SCons user manual http://www.scons.org/doc/1.2.0/HTML/scons-user/book1.html . SCons man page (on web at http://www.scons.org/doc/HTML/scons-man.html , or man scons ) . ... SCons is a tool to build compile source code into (closer-to) executable format. ... Curiously, the shared-library SCons builder will accept multiple identical sources and pass them all to the linker, which will normally lead to ?multiple definition? errors. ... Introduction to SCons . ...

lsst.tcc љ 1.2.2-3-g89ecb63 . ... Files . ... src . telMod.cc . ... 2 љ * Pointing model block . ... 11 љ const float RadPerArcsec = coordConv::RadPerDeg / coordConv::ArcsecPerDeg; . ... 27 љ void TelMod::loadPath (std::string const &filePath) { . ... 29 љ int retVal = tcsIntpm(filePath.c_str(), & _model ); . ... 47 љ std::string const &termName, . ... 75 љ std::vector<std::string> TelMod::getTermNames () const { . ... 125 љ std::ostream & operator<< (std::ostream &os, TelMod const &telMod) { . ...

... The actual cross-correlations were done as follows: north of WGACAT was correlated with the GB6 catalog with a correlation radius of one arc minute. ... We therefore cross-correlated WGACAT with the GB6 and PMN radio catalogs with a 1.5 arcmin radius. ... As a result of this experiment, we then added to the WGACAT/PMN candidate list the 29 unclassified sources obtained from the 1.5 arcmin correlation and having PSPC offsets arcmin, ratio between X-ray/radio offset and positional error , and . ...

Stellarium 0.12.3 . ... Renderer . FileљStructure . ... core . ... StelTextureBackend.hpp . ... 26 љ #include <QString> . ... 56 љ inline QString textureStatusName( const TextureStatus status) . ... 118 љ const QString& getName () const . ... 132 љ invariant(); . ... 143 љ const QString& getErrorMessage () const . ... 151 љ const QString path ; . ... 157 љ StelTextureBackend ( const QString& path ) . ... 200 љ void errorOccured ( const QString& error) . ... 232 љ void invariant() const . ...

... The VSOP Survey Continuum Source List . The radio sample for the VSOP continuum survey was defined to include all extragalactic radio sources with: . a total flux density at 5 GHz, S>=1.0 Jy . ... The sample also included all sources in the sky with a 5 GHz flux density S>5 Jy, regardless of spectral index and galactic latitude. ... The source would then be included in the VSOP sample (three of the sources were found with a flux density above 1 Jy and added to the sample). ...

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... The K2 optical (top panel) and MAXI X-ray (lower panel) light curves of Sco X-1. ... The error on the optical photometry is negligible and the error on the X-ray points are typically 1 percent. ... We also find evidence that this behaviour has a typical systemic timescale of 4.8 days, which we interpret as a possible disc precession period in the system. Finally, we confirm the complex optical vs. ...

Subject, Object and Problems of Astrophysics. Practical and Theoretical Astrophysics. ... Visual Telescope; Problems Which Are Solved with the Its Help. ... Resolution of Telescopes. ... Effectiveness of Telescope in Respect of Resolution. ... Optical Power of Telescopes for Star-like and Extensive Objects. Boundary Magnitude. Reasons of Light Dissipation in Telescopes. ... Spectral Instruments in Astrophysics. ... Basic Photometrical Ideas, Magnitudes and Their Measurement. ...

... Page not found . ... Задачей КА Mars Express, является выполнение научных исследований, которые не состоялись из-за аварии российского КА Марс 96. ... Mars Express будет запущен в начале июня 2003 года с Байконура ракетой-носителем "Союз-Фрегат". Выход на орбиту Марса планируется на 26 декабря 2003 года. ... КА Mars Express также будет выступать в качестве ретранслятора для посадочных ступеней других международных миссий по исследованию Марса. ...

... During the analysis of the surveys carried out on RATAN-600, it was found that almost one fifth of the detected sources shows significant radio flux variations. ... We used the data from "Cold" radio surveys carried out with RATAN-600 in 1980-1994 to search for radio sources with significant flux variability. ... On possibility of detection of variable sources using the data of Cold surveys carried out on RATAN-600. ... Detection of Variable Sources Using the Data of "Cold" Surveys. ...

Peremennye Zvezdy", . ... Star Name: . 1RXS J190331.9+104353, EQ J190331.9+104353.1 . ... This variable star was discovered by Barsukova (2004) in the vicinity of the hard X-ray source and microquasar candidate 1RXS J190333.1+104355 (Paredes et al., ... Our variable star is located outside the error circles of these sources but very close to the western border of the ROSAT X-ray error circle. ... The light curve shape is typical of Mira Ceti type stars. ... Light Curve . ... Data Source . ...