... Flux density at 1 GHz (/Jy): 28 . ... Radio: Shell, brightest to the S. Optical: Filaments correspond well to the radio shell, brightest in SE. X-ray: Brightest to NW, with point source near centre. Point sources: Central, variable X-ray source, and nearby pulsar. ... Molonglo at 408 MHz (3') and Parkes 64-m at 5 GHz (4'). ADS . ... ASCA observations of compact X-ray source. ... X-ray variability of central source. ... ATCA at 1.4 GHz (50''), including H I absorption to central source. ...

NStars 1: photometric surveyse --- | ... There are a number of 2MASS sources which have (faint) counterparts on POSS II F (R) or N (I), but don't have an entry in the GSC 2.2. ... It is possible that some images might have no GSC counterpart due to proper motion taking the source outside the 6 arcsecond search radius between the palte-taking and the 2MASS observation. ... Figure a1.1: The (F-J)/(J-K) two-colour diagram for faint sources with GSC2.2 counterparts. ... Intermediate sample . ...

... Most data from ATNF observatories distinguishes on and off source data using the file name. This makes it easy to create two scantables with the source and reference data. As long as there was exactly one reference observation for each on source observation for following method will work. For Mopra and Parkes data: ASAP> r = scans.get_scan('*_R') ASAP> s = scans.get_scan('*_S') . For Tidbinbilla data ASAP> r = scans.get_scan('*_[ew]') ASAP> s = scans.get_scan('*_[^ew]') . ...

lsst.coordConv љ unknown . ... Files . ... include . ... physConst.h . ... 17 љ const double Pi = std::atan(1.0)*4; . 18 љ const double HoursPerDeg = 24.0 / 360.0; // hours per degree . 19 љ const double RadPerDeg = Pi / 180.0; // radians per degree . 20 љ const double KmPerAU = 149597871.0; // kilometers per astr. unit (Astr. ... 38 љ // const double JY_per_BY = 36524.2198781 / 36525.0; // Julian years per Besselian (troPical) Years (Taff) . ... Definition: physConst.h:26 . ...

... VIII/16 Molonglo Reference Catalogue of Radio Sources (Large+ 1991) ================================================================================ Molonglo Reference Catalogue of Radio Sources Large M.I., Cram L.E., and Brugess A.M. <The Observatory, 111, 72 (1991)> = 1991Obs.. ... The MRC was re-issued in 1990 with the original B1950 coordinates supplemented by J2000 values, and an additional cross-reference flag `J' added to denote (extended) sources imaged at 843-MHz by P.A. Jones. ...

For calculating model spectra of early-type helium stars in LTE, we maintain a database of atomic data for, mostly, blue-visual absorption lines of light elements. The data is sorted with one file for each ion. ... III = ++ . ... It will work on both complete linelists (including the atomic data at the start and references at the end) or raw ion files (such as Ni2.d). ... A Fortran utility to convert linelists downloaded from the Vienna Atomic Line Database into the new QUB format. synspec_qub . ...

... 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). ...

On the problem of using of the ICRF radio coordinates reference system Lipovka A.A. (1), Lipovka N.M. (1) Center of research for physics, Sonora State University e-mail: nila_lip@mail.ru Bibliography 1. ... Columns 8, 9 are corrections to right ascension and declination, which should be added to coordinates of ICRF2 radio sources, to obtain coordinates of optical objects, with which these radio sources are identified. ... Lipovka .. ... Fig 3 Fig 3 ...

... Proposing for VLBI Time at Arecibo . ... Documentation (Field System, VLBA4 terminal, Mark 5 system) . ... In 2001, the Arecibo Observatory received its hybrid VLBA-MARK IV (VLBA4) data acquisition system, and currently NAIC commits Arecibo to support VLBI observing up to a maximum of 4% of the 305-m's observing time. ... Tracking Time (h:mm) . ... The inclusion of the 305-m Arecibo radio telescope can dramatically boost the sensitivity of VLBI observations, even with its limited source tracking...

The database contains references to the papers, data files and links to the Internet resources related to measurements and calculations of the optical constants in the wavelength interval from X-rays to radio domain. ... References to some useful books and reviews on the subject (e.g. the classical handbooks edited by E.D.Palik) and links to Internet collections of optical constants and personal WWW pages with related software were also placed in the database. You have arrived at our welcome page. ...

... Despite new observation methods provided by radar and satellite instrumentation , optical measurements are still important when studying auroras . ... Because of the monochromatic nature of the auroral light, photomultiplier tubes with very narrow band filters were used in the measurements. ... The spectra of the background emissions from atmospheric impurities (clouds, ice crystals, etc.) is rather continuous, and measurements just outside the auroral emission lines are valid for the line itself. ...

... Natalya V. Raguzova and Sergei B. Popov . ... We present a compilative catalogue of Be/X-ray binaries and candidates in the Galaxy and in the Large and Small Magellanic Clouds. This catalogue contains 160 sources and provides information on names and spectral types of optical components, distances, on spin characteristics of neutron stars, and on orbital and X-ray properties of binary systems. ... Be/X-Ray Binaries and candidates in the Galaxy . Galactic sources: comments to the Table 1 . ...

Stellarium 0.12.3 . ... Classes . ... FileљStructure . FileљList . FileљMembers . core . ... StelSkyLayerMgr.hpp File Reference . Define the classes needed for managing layers of sky elements display. More... #include <QString> . include <QStringList> . include <QMap> . include "StelModule.hpp" . ... Go to the source code of this file. class љ . ... Manage the sky background images, including DSS and deep sky objects images. ... Definition in file StelSkyLayerMgr.hpp . ...

... Get a list of the number of unique ``windows'' in the input source-list files (a window has a unique set of WINDOWX0, WINDOWDX, WINDOWY0, WINDOWDY and BINBPE parameters. ... Find the source-list that has the most sources in that window. For each other source-list in the window, compute the RA/DEC offsets that are needed to be added to their RAs/Decs to align with the reference source-list coordinates. ... Subtract the mean offsets from the RA/Dec coordinates of the reference source-list. ...

The NTP Version 3 daemon currently supports several different radio, satellite and modem reference clocks plus a special pseudo-clock used for backup or when no other clock source is available. Detailed descriptions of individual device drivers and options can be found in the Reference Clock Drivers page. Additional information can be found in the pages referenced there, including the Debugging Hints for Reference Clock Drivers and How To Write a Reference Clock Driver pages. ...

The ChaMP announces a second release of processed optical and X-ray data. ChaMP X-ray Point Source Catalog , the basic parameters, photometry, and flux of 6512 ChaMP sources in 130 Chandra observations from Chandra Cycles 1 and 2 (Last Update 08/09/2006, Release Notes ) . ChaMP X-ray Products and Catalogs for Publicly released Chandra/ChaMP Fields . Full Field Images includes FITS and GIF images, source lists, and X-ray data products. ...

... LABORATORY OF RADIO ASTRONOMICAL OBSERVATIONS . Radio sources identification is one of the most important tasks of the current radio astrophysics. ... Optical idetification. ... Optical identifications of subsample of steep spectra radio sources from RC catalog using 6m SAO telescope of SAO RAS: optical observations. ... Astronomy Reports. ... Identification of radio sources with data of various radio catalogs allows one to construct continual spectrum of the object and its radio structure. ...

home education > resources . ... Resources . ... Astronomical Pseudo-Science . ... Black Holes: An Introductory Resource List . ... http://www.astrosociety.org/2012 . ... Fraknoi, A. "Dealing with Astrology, UFOs, and Faces on Other Worlds: Guide to Astronomical Pseudo-science in Classroom," Astronomy Edu cation Review, (2004): http://dx.doi.org/10.3847/AER2003022 . ... The Skeptic's Dictionary: An excellent source of brief reviews, references, and links on dozens of areas of pseudo-science. ...

... Canadian Astronomy Data Center, DAO/NRC . SkyCat is a tool that combines image visualization with access to astronomical catalogs and data archives. SkyCat uses a standardized URL syntax to access a large number of data sources on the net. ... More information on SkyCat can be found at the SkyCat Web site. The ESO SkyCat Tool includes the following features: . ... PostScript color printing of the display (image + graphics), . ... overlay catalog sources on an image, . ...

Databases (NSDC) of the Natural Planetary Satellites. ... NSDC: Database of astrometric observations of Natural Planetary Satellites . ... They are thoroughly looking for observations in different sources, creating their owndatabases which are then mostly inaccessible to other researchers. ... In the file "content" with explications, the reference is given to the data source as well as the bibliographic reference. ... Data sources. ... Why a specific bibliographic database for Natural satellites? ...