Next: *tabplot* - Displaying a Up: Radial Profiles and Projections Previous: Radial Profiles and Projections . Obtain a radial distribution of counts for the source centered at x = 503, y = 513, in the data image xdata$snr.qp . The background is taken locally from an annulus outside the source region. ... Region descriptors can also be given on the command line, but they must be enclosed by quotes. xs> imcnts xdata$snr ``a 503 513 0 50 n=5'' . ...

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• Fit a source with a small number of net counts
• Source Selection
• The AstroStat Slog PDF

... Columns RA_CORR and DEC_CORR are only passed to the output summary source lists, when srcmatch is used on only one source list. ... Additionally, the number of entries per row for a given column can also be retrieved from the FITS keyword TDIMi (i being the column index). srcmatch will pass on the columns RA_CORR and DEC_CORR (generated by eposcorr ) from the input X-ray source list to the summary output list, only if the number of input source lists is 1 . ...

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• Future developments
• Maximum number of sources.
• Description

Next: Summary Up: The Second EGRET Catalog Previous: Upper Limits for . In regions of the sky where two or more sources have overlapping point spread functions, it is often difficult to resolve the number of sources and their locations. ... As an example, Nolan et al.(1995) list a source 0445+62 at l = 146.89 , b = 10.65 , with a = 4.0 and a source 0500+59 at l = 150.52 , b = 10.25 , with a = 4.2. ... Both of these sources lie close to the threshold adopted for this catalog. ... 1995). ...

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• First Catalog Sources Not in the Second Catalog
• DRAO surveys
• A 10-GHz Radio Continuum Survey

... C N Maximum number of axes in a GDS set INTEGER MAXAXES PARAMETER ( MAXAXES = 10) N Maximum number of subsets INTEGER MAXSUBS PARAMETER (MAXSUBS = 2048) N Size of internal data buffer INTEGER MAXDATA PARAMETER (MAXDATA = 4096) N Names of input and output set CHARACTER*80 SET1 , SET2 N Dimension of subsets INTEGER SUBDIM N Number of subsets INTEGER NSUBS N Array containing axis permutation INTEGER AXPERM1( ... 0) CFOR CALL FINIS STOP END . ...

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• Copying, Reordering and Regridding Images
• Image Statistics and Histograms
• Source Fitting and Positions

Next: Program use Up: Description of program searchdup Previous: Description of program searchdup . Parameter input is done with a graphic user interface. ... Input file: Name of the input catalog file. It has to be formatted, one record per source/observation, according to the format used in the Arcetri observations and source archives. ... Minimum number of observations per source Source with less than this number of independent observations are not included in the output file . ...

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• research field
• mod_logio - Apache HTTP Server
• The ALMA project

... Data Reduction FAQ > A number of OmegaCAM filters show vignetting in their central regions. What are the causes for this and what are the dimensions of these features? ... Observing with ESO Telescopes . ... ESO-MIDAS . ... ESO Data . ... ESO HST Image Galleries . ... ESO Data Access Policy . ... ESO Science Newsletter . ... A number of OmegaCAM filters are not monolithic, but consist of four segments (each covering 8 detectors) that have a central cross-shaped support structure. ... Filter . ...

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• The Cross-correlations
• The Catalogs
• ESO - vo2002

Next: The Model Up: No Title Previous: Radiopulsars as Sources of . In this section, we study the evolution of stellar populations on a time-scale of 10 Myr for a starburst љ occurring under conditions similar to those in the Galactic Center (see Lipunov et al. (1995d)[ 126 ]). We estimate the expected number of X-ray transient љ sources (NS + MS star), super accreting BH, and BH + supergiant binaries, all as functions of time elapsed after the burst. ...

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• Number of accreting X-ray binaries of selected types
• Discussion and conclusions
• Parameters of the starburst

... Each box has 5 digital output cards and each card holds 16 bits (80 bits in total). ... They go to things that are not duplicated in the two polarization chassis (e.g. cal source ). Schem : The reference number on the schematic (see schematic pdf file). ... ref numbers 9-12 : page 3 of 3 260 to 30 mhz converter (.pdf) . ... in). if Input . ... selects the input path thru the iflo . mix1inp . ... Selects the source input to the mixer . ... see mix1inp . ... syn1 dest . ... same as syn1 dest . ...

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• http://www.naic.edu/~phil/usrproj/a1552/a1552.html
• pdev_birdies_25jun07
• AO Fax numbers

... The highly obscured cases in our sample are generally the bright, central regions of galaxies with high overall attenuation but are not otherwise remarkable. ... The small fraction of highly obscured regions seen in this sample of normal, star-forming galaxies suggests that on 500 pc scales the timescale for significant dispersal or breakup of nearby, optically thick dust clouds is short relative to the lifetime of a typical star-forming region. ... ADS Citation Query . citations = 66 . ...

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• NStars1A: Photometric searches - 2MASS and optical colours
• Resources for mapping HST papers to proposals
• The Hubble Deep Field: Number Counts, Color-Magnitude and Color-Color Diagrams

... Up: Science Data Pipelines . ... We designed and developed a package which simulates extragalactic point source data within a given field of view and SIRTF band. ... The simulator is modular and extensible to enable multi-wavelength simulations, has been optimized by utilizing parallel processing capabilities, and will be used to test pipeline software. ... The extragalactic simulator is capable of generating large numbers of galaxies within a given patch of sky for SIRTF pipeline testing. ...

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• Access to Data Sources and the ESO SkyCat Tool
• QPSIM: An IRAF/PROS Tool for Source Simulation
• A New PROS Task for Calculating HRI Source Intensities or Upper Limits

The NICFPS:Dither:Point Source Random script allows you to take a sequence of exposures in a square pattern plus a point in the middle. This pattern is typically used for point sources. ... Any dither point may be omitted by unchecking its checkbox before running the script. ... Dither pattern without randomization . ... Randomization 1. ... Dither pattern with randomization Thanks to Corey Wood for the first implementation of randomization and for the images used in the documentation. ...

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• lsst.tcc: python/tcc/axis/kwDict/axis.py Source File
• lsst.coordConv: python/coordConv/testUtils.py Source File
• lsst.tcc: python/tcc/parse/getPVTList.py Source File

SIMPLE = T / file does conform to FITS standard BITPIX = 8 / number of bits per data pixel NAXIS = 0 / number of data axes EXTEND = T / FITS dataset may contain extensions COMMENT FITS (Flexible Image Transport System) format is defined in 'AstronomyCOMMENT and Astrophysics', volume 376, page 359; bibcode: 2001A .. ... IMAGEW = 4256 / image width IMAGEH = 2832 / image height ANRUN = T / Solve this field! ...

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• http://www.astro.louisville.edu/software/sbig/xmccd-5.1/CCDCOMMANDLIST

... For a tsvector column in a table, returns the distinct words along with their frequency. This includes the number of documents (table rows) containing a word and the number of entries for a word which includes multiple occurrences within a row. stat(txt TEXT) RETURNS SETOF STATINFO . txt' is a select statement that selects a tsvector column from a table. SELECT * FROM stat('SELECT ts_vec FROM ts_readme') ORDER BY ndoc desc, word LIMIT 5; word | ndoc | ...

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• APOD: 2006 July 29 - The Swarm
• APOD: 2005 January 28 - The Swarm
• Zen: SkyPixelization

... The molecular content of the DMTau and GGTau disks . ... 317, P L55-L58 (1997). ... Article in PDF format . ... 317, P L59-L62 (1997). ... 317, P L63-L66 (1997). ... 317, P L67-L70 (1997). ... 317, P L71-L74 (1997). ... 317, P L75-L78 (1997). ... 317, P L79-L81 (1997). ... 317, P 303-317 (1997). ... 317, P 318-327 (1997). ... 317, P 328-349 (1997). ... 317, P 350-357 (1997). ... 317, P 358-384 (1997). ... 317, P 385-392 (1997). ... 317, P 393-396 (1997). ... helpdesk@link.springer.de . ...

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• Springer LINK:A&A-EE: Table of Contents Volume 318 Number 3 (1997)
• Springer LINK:A&A-EE: Table of Contents Volume 323 Number 3 (1997)
• Springer LINK:A&A-EE: Table of Contents Volume 322 Number 3 (1997)

This WWW form allows the user to list selected portions of the NRAO/VLA Sky Survey (NVSS) radio source catalog. ... Until the completion of the survey the source catalog will NOT cover the entire region of the survey and care must be exercised in interpreting the results of a catalog search. ... The second parameter in the "Search radius" box or one of the optional items in a position list can be used to specify a region in which to look for other sources. ... An example of a position list entry is: . ...

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• Astrophysics Group Variability studies
• Astrophysics Group 10C
• The quasar fraction in a sample of giant radio sources

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 . ...

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• IAJ: Contents - Volume 24 Number 1
• IAJ: Contents - Volume 25 Number 1
• IAJ: Contents - Volume 22 Number 2

... CXC , NASA Explanation: What do you call a group of black holes ... a flock, a brace, a swarm? Monitoring a region around the center of our Galaxy , astronomers have indeed found evidence for a surprisingly large number of variable x-ray sources - likely black holes or neutron stars in binary star systems - swarming around the Milky Way's own central supermassive black hole. ... Publications with keywords: galaxy center - black hole - x-ray binary - Sgr A . ... Jumbled Galaxy Centaurus A . ...

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• Journal "Peremennye Zvezdy"
• Астронет > The Swarm
• Sunspot Region 30

.

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Family ASTRO Event Leaders can follow the links below to find a number of resources and more background reading to help them with their Astronomy Events and expand their knowledge on the topics covered in our series of Leader Kits for educators. ... Print and Web Resources on the Night Sky . ... If you have questions about Family ASTRO, see our Frequently Asked Questions for Educators and Astronomers page , or our Frequently Asked Questions for Families and Friends page. ...

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• ASP: Astronomical Pseudo-Science: A Skeptic's Resource List
• ASP: Good Astronomy Activities on the WWW
• ASP: The Astronomy of Many Cultures: A Resource Guide

markback -- mark regions in the background for performing statistics on markback association . association . calnicb style association input file with list of images to be processed and co-added. number . labels boxes with numbers on image display . ... Only the first 2 boxes will be used by asncombine. nmem . image in association to use for marking the boxes. markback displays one image of an association (the nmem'th image), and allows the to mark nbox regions on the image display. ...

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• ST-ECF IRAF package
• Unusual Emission near a Compact Source in Orion
• The STScI NICMOS Calibration Pipeline