... arfgen (arfgen-1.75.6) [?? Meta Index / Home Page / Usage and Examples Here is a typical example of running arfgen based on a spectrum of a point source: . arfgen spectrumset=spectrum.ds detmaptype=psf . ... The effective area, filter transmission and quantum efficiency curve are included in the ARF. ... Corrections are applied for any CCD gaps or source region area falling outside the field-of-view or observing window but not for bad pixels or bad columns. ...

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. ...

... Next: The PROS Big Up: Software Systems Previous: Data Reduction Software . ... The srcinten task provides PROS users with a tool to compute count rates for point sources in the ROSAT High Resolution Imager (HRI). ... Corrected upper limits are cited at locations where the count rate falls below the source detection threshold. ... Srcinten is a new PROS task that computes and applies the above correction factors to the net counts in a user-specified aperture. ...

... We have developed a suite of analysis tools and an on-line database for both the primary ChaMPlane X-ray data (source catalogs) as well as the optical counterpart data. ... The ChaMPlane VO provides access to our deep Mosaic optical (V,R,I,Halpha) images, catalogs of their optical photometry, Chandra images with exposure-map correction, X-ray source data and details of X-ray sources with identified optical counterparts. ... Chandra sources are displayed (right) in a smoothed Chandra X-ray . ...

... Miriad has a couple of tasks available for finding positions of sources (see also cgcurs in Chapter 17 ). ... It fits a 2-D parabola to the image intensities in a 3 by 3 pixel box centred on the brightest pixel in a specified region and reports the fitted location and intensity. ... Input image . ... The quality of your fit can improve significantly by selecting a snug region, and/or using the clip keyword to keep pixel values with little signal (e.g. sidelobes and noise) out of the fitting process....

In this section we present plots which may be used to rapidly estimate signal-to-noise ratio (SNR) for point sources with stellar spectra observed through popular WFPC2 filters. ... One uses these plots as follows: . ... Dotted lines across the top of each plot indicate the onset of saturation. ... We look at Figure A2.10 and find this value on the horizontal axis. ... This exposure is well below the saturation lines in the plot, so saturation is not a concern. ... Figure A2.1: Point Source SNR vs. ...

... 172 ] Briefly, the count rate at the detector from a source at a redshift z is . ... Figure 55 shows the ``Green functions'' for the double compact binary merging rate   evolution assuming no collapse anisotropy. ... Another way that diverse peculiarities in the - distribution induced by the sources evolution could arise is connected with a possible non-monotonic character of the star formation rate in galaxies. ... 22 ] Figure  56 shows two-dimensional cuts through the parameter space. ...

... 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. ...

... The data was taken over many days with the same source in more than one file. ... You want to convert the data to kelvins (this is galactic work) and then average all the scans for each source. ... input each onscan, average, and then scale to kelvins . place all of the averaged scans in an array, when done with the file, store this array in an idl save file for this day. ... Average together scans of the same source and then baseline them. input all of the daily save files into a single array . ...

... In this example, we will add synonyms for 'postgresql', 'postgres', and 'pgsql'. ... Create a synonym file with 2 columns - the original word and its synonym. cat /usr/local/pgsql/share/contrib/english.syn postgresql pg postgres pg pgsql pg . ... Add an english synonym dictionary to the pg_ts_dict table. ... INSERT INTO pg_ts_dict ( SELECT 'en_syn', dict_init, '/usr/local/pgsql/share/contrib/english.syn', dict_lexize, 'English Synonyms' FROM pg_ts_dict WHERE dict_name='synonym'); . ...

Links and Resources for Energy and the Environment . The world is finally becoming globally aware that exponential resource usage in combination with finite reserves is a recipe that ensures our great grandchildren won't be born. ... National Environmental Information Service . ... Electronic Energy Journal . ... Sustainable Development Dimensions , including sections on Environmental information , Environmental policy, planning and management and Energy for development . ... Acid Rain Resource . ...

... 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. ...

... 00001 /* Example code for FITS-based optical interferometry exchange format 00002 00003 $Id: exchange.h ,v 1.6 2003/04/07 10:20:28 jsy1001 Exp $ 00004 Definitions of data structures, function prototypes 00005 00006 00007 Release 5 7 ... structures */ 00017 /* NB must allow for final null when dimensioning character arrays */ 00018 00020 typedef struct _element { 00021 char tel_name [17]; 00022 char sta_name [17]; 00023 int sta_index ; 00024 float diameter ; 00025 ...

... General information . ... Staff . Research staff . Technical, administrative & librarian staff . ... Staff in alphabetic order . Research . ... Technical reports . Projects . ... General interest seminars . ... IT Services . ... Information . ... Historical highlights . Historical research . Historical archive . ... Projects and events . Online resources . ... Information Services . Catalog and Resources: . ...

home education > resources . SEARCH ASP SITE: Match ALL words Match ANY word . ... Resources . ... Astronomy Education Bibliography . ... Astronomical Pseudo-Science . ... Black Holes: An Introductory Resource List . ... Astronomy . ... Space Science Education Resource Directory . ... http://www.aas.org/education/ancientuniverse.html . National Center for Science Education: Best web site for keeping up with issues in this area, with many articles, resources, and links. http://www.ncseweb.org . ...

Observatories This page contains a incomplete list of links to various observatories throughout the world. Observatories are listed according to the types of telescopes they mostly operate, for example, optical or radio telescopes. ... Arcetri - Arcetri Astrophysical Observatory . ... Bologna - Bologna Astronomical Observatory . ... Grove Creek - Grove Creek Observatory . ... Radio Observatories . ... DRAO - Dominion Radio Astrophysical Observatory . ... Hat Creek - Hat Creek Radio Observatory . ...

The Astronomy Net . Articles | AstroGuide | ... Forums . ... H ere you can find resouces to help understand perhaps the grandest of all sciences. ... Upcoming Sky Events . ... This site includes lists of manufacturers, vendors, software, etc. organized in the AstroGuide to help when you are looking to purchase your tools. ... Astronomy Articles . ... Are you interested in writing an article for the Astronomy Net? ... www.astronomy.net . ... dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

USING THE CORRELATION BETWEEN ISGRI SURVEY RESULTS AND OTHER CATALOGUES TO AID SOURCE IDENTIFICATION John B. Stephen, A. Malizia and L. Bassani IASF-INAF, Via P. Gobetti 101, 40129 Bologna, ITALY, E-mail: stephen@iasfbo.inaf.it ABSTRACT In order to help in the identification of INTEGRAL/ISGRI sources, we have developed a software package which allows a rapid and detailed cross-correlation to be performed between various source catalogues. ... We show below some preliminary results from this analysis. ...

lsst.coordConv љ unknown . ... Files . ... src . mathUtils.cc . ... 8 љ double hypot ( double x, double y) { . ... 14 љ bool polarFromXY ( double &r, double &theta, double x, double y) { . ... 28 љ void xyFromPolar ( double &x, double &y, double r, double theta) { . ... 33 љ void computeRotationMatrix (Eigen::Matrix3d &rotMat, Eigen::Vector3d const &axis, double rotAngle) { . ... 35 љ double const c = cosd (rotAngle); . 36 љ double const mc = 1.0 - c; . ... Definition: mathUtils.cc:28 . ...

Central Astronomical Observatory at Pulkovo of Russian Academy of Sciences PUL Analysis Center Pulkovo IVS Analysis Center (PUL) 2009 Annual Rep ort Zinovy Malkin, Natalia Miller, Elena Popova Abstract This report briefly presents the PUL IVS Analysis Center activities during 2009 and plans for the coming year. The main topics of the investigations of PUL staff in that period were ICRF related studies, computation and analysis of EOP series, and VLBI2010 related issues. ...