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. ...

XMM-Newton Science Analysis System Page: 1 omregion July 2, 2008 Abstract Calculates evselect region les for an OM source 1 Instruments/Modes Instrument Mode OM FAST 2 Use pipeline processing yes interactive analysis yes 3 Description This task takes an OM OSW source list and a source number and produces evselect region les for the source and its associated background. ... Intermediate source region le for use by evselect 2. ...

Next: Photometry Up: Regions and Source Parameters Previous: *imcnts* - Find counts . This task (developed for use with optical images, but also useful with x-ray data) will quickly compute location, size, ellipticity, and position angle of sources. ... User can generate contour plots of any portion of the image and count rates in slices through the image. The program is advertised as ``quick [optical] photometry''. input file: rp110590_im1.imh . output file: logfile . ... Photometry . ...

... 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....

... 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. ...

On 1 February 2002 this Mirror was upgraded from NVSSlist v2.10 to NVSSlist v2.17 . ... This form searches the source catalog produced by the NRAO/VLA Sky Survey (NVSS). ... Object name [optional] : . ... Search radius and verification halfwidth in arcseconds [Optional] : . ... Enter a list of positions to search: . ... The contents of the NVSS source catalog and the techniques used by NVSSlist to derive error estimates and other parameters are described here. ...

... WFPC2 ETC for Point Sources + Background - v4.0 . Home . ... Data . ... WFPC2 Home . ... Instrument Home . WFPC2 History . ... Calibration Home . ... LRF Data . ... Data Analysis . Data Analysis Home . Data Analysis Library . ... Line: Ly 1216 C IV 1550 He II 1640 C III 1907 Mg II 2800 0 II 3727 Ne III 3869 H 4340 0 III 4363 He II 4686 H 4861 0 III 4959 0 III 5007 N II 5755 He I 5876 0 I 6300 N II 6548 H 6563 N II 6583 S II 6716 S II 6731 S III 9531 Specify Z Vel. : (units) . ...

This is possible if you do it in the following way, that is if you use the new continuation sign "&" at the end of the old line, but in position 73 so that it doesn't conflict with Fortran 77, and also choose the "&" sign as the almost arbitrary character in column 6, in order to get continuation according to Fortran 77. ... Comments are an incompatibility problem between Fortran 77 and Fortran 90, but of course not between fixed and free forms of Fortran 90 since the "!" is permitted in both. ...

Next: CORRELATOR BOARDS Up: OBSERVING PROCEDURES Previous: Frequency Switching . ... Continuum sources in the list used for flux density calibration were selected in an ad-hoc fashion from a variety of places, but primarily from Kuehr et al (A&AS, 45, 367, 1981), the compendium of linearly polarized sources by Tabara & Inoue (A&AS, 39, 379, 1980), and an unpublished list of unconfused calibrator sources prepared from the NVSS survey by Jim Condon and Qi Feng Yin. ... Board 0 . ...

home education > resources . SEARCH ASP SITE: Match ALL words Match ANY word . ... Astronomical Pseudo-Science . ... Black Holes: An Introductory Resource List . ... On the web at: http://www.stephenjaygould.org/ctrl/gould_velikovsky.html ) . ... Debunks von Daniken and Velikovsky's ideas, as well as the Sirius myth. ... Science or Charlatanism: Robert Sheaffer's short article challenges a number of Von Daniken's claims. http://www.debunker.com/texts/vondanik.html . ... Skeptic's Dictionary: . ...

... It has some information on basic operating system theory, some that is specifically related to Linux, and occasional parts that aren't really related to Linux at all (such as a discussion of the Georgia Tech shell). ... Inline Assembly with DJGPP really applies to any version of GCC on a 386, and some of it is generic GCC inline assembly. ... Copyright (C) 1996 Michael K. Johnson, johnsonm@redhat.com. ... Book Review? by Josh Du"Bois . ... To add more sources of information: by Michael K. Johnson . ...

Stellarium 0.12.3 . ... Renderer . FileљStructure . ... core . ... 29 љ Vec2f position; . ... 32 љ VertexP2 ( const Vec2f position) : position(position) {} . ... 43 љ Vec2f texCoord; . ... 46 љ VertexP3T2 ( const Vec3f & position, const Vec2f texCoord) . ... 50 љ VertexP3T2 ( const Vec2f pos, const Vec2f texCoord) . ... 64 љ VertexP3T2C4 ( const Vec3f & position, const Vec2f texCoord, const Vec4f & color) . ... 68 љ VertexP3T2C4 ( const Vec2f pos, const Vec2f texCoord, const Vec4f & color) . ...

... Impact of Covariance Information on the Orientation Parameters Between Radio Source Position Catalogs, IVS 2012 General Meeting Proceedings, p.339­341 http://ivscc.gsfc.nasa.gov/publications/gm2012/sokolova.pdf Impact of Covariance Information on the Orientation Parameters Between Radio Source ... IVS Analysis Centers provide these catalogs in a standard IERS format, where together with radio source positions and other relevant information, RA/DE correlations are reported. ...

... 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. ...

. Comment on J0455-3006 . No detection: the source may be resolved out or the position could be in error by more 30". The position comes from Griffith & Wright (1993). VLBApls home page . Last modified: 16 Oct 2000

lsst.tcc љ 1.2.2-3-g89ecb63 . ... Files . ... include . tcc . tcsShim.h . ... 51 љ double const FL = 1.0; . ... 97 љ std::ostream & operator<< (std::ostream &os, ASTROM const &astrom); . ... 99 љ std::ostream & operator<< (std::ostream &os, FLDOR const &fldor); . ... 101 љ std::ostream & operator<< (std::ostream &os, PORIG const &porig); . ... 103 љ std::ostream & operator<< (std::ostream &os, SITE const &site); . ... 105 љ std::ostream & operator<< (std::ostream &os, TARG const &targ); . ...

... astro-ph . ... Statistical Characterization of the Chandra Source Catalog . ... The first release of the Chandra Source Catalog (CSC) contains ~95,000 X-ray sources in a total area of ~0.75% of the entire sky, using data from ~3,900 separate ACIS observations of a multitude of different types of X-ray sources. ... In addition to these traditional catalog elements, for each X-ray source the CSC includes an extensive set of file-based data products that can be manipulated interactively. ...

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" . ...

Next: Sample Properties Up: Sample Identification Previous: Comments on Individual Sources . Previously known serendipitous sources were selected by cross-correlating WGACAT with a variety of optical and radio catalogs, including the Ver?n-Cetty & Ver?n (1996) and Hewitt & Burbidge (1993) quasar catalogs, the 1 Jy (Stickel et al. 1994) and S4 (Stickel & K?hr 1994) radio catalogs, and the BL Lac catalog of Padovani & Giommi (1995b). ... Details of these 97 objects are given in Table 6. ...

. Previous . Next . A GiST index is a template indexing structure that allows domain experts to adhere to an interface and index custom data types. Must implement the following methods- consistent, union, compress, decompress, penalty, picksplit, same. Writes to GiST indexes lock the whole index. Writes to btree indexes only lock the affected index page. Knowledge of C is required to write custom GiST indexes.