Point Source SNR Plots . 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. ... There are separate lines for PC1 (light lines) and the WFC (heavy lines), as well as for ATD-GAIN=7 (default, solid lines), and ATD-GAIN=15 (dashed lines). Dotted lines across the top of each plot indicate the onset of saturation. ... We now give a sample SNR calculation using these plots. ...

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• Appendix B: Point Source SNR Plots
• WFC3 Instrument Handbook
• FrameMaker Resources

The red noise source was used to take spectra with and without the new mixture chassis. ... All spectra were 30 seconds of integration, 170 Mhz sampling and 8192 channels. The red noise source was used. The spectra through the mixer were centered at 325 Mhz in the noise spectra. The non mixer spectra used a 60 Mhz low pass filter between the noise src and the digitizer. ... The two measurements used different portions of the noise source spectrum (325 Mhz and baseband). ...

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• check lbw filter bank

... This is followed by astrometric columns - ie columns for the Right Ascension, declination, position error, galactic longitude and galactic latitude. There then follows columns for the computed significance (signal-to-noise) of each source for each of the filters present. Columns for the instrumental magnitudes and colours for each filter, follow. ... Columns for the standard magnitudes and errors, for each filter, follow. ... Standard colours and errors then follow. ...

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• Parameters
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HI source finding: 2 novel approaches ATNF, December 2010 Outline · Background · What is source finding? ... Motivation for developing new HI source finding methods · Novel source finding methods · · · · General idea Iterative 3-D median smoothing Characterised noise method Wavelet method · Summary Background What is source finding? ... 3-D median smoothing: Purpose · Goal: Reduce noise while preserving shape · Particularly edges · Median works because it's non-linear · Consider this, Iter. ...

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• http://www.atnf.csiro.au/management/atuc/2011oct/science_meeting/docs/trott_FT_v3.pdf
• Pre- and Post-Correlation filters
• The ATNF Electronics Group : LBA_DAS

This document discusses the conventions for combining region and table filters, especially with regards to the comma operator. Filter specifications consist of a series of boolean expressions, separated by commas. ... Region and table filters can be combined: foo.fits[circle(10,10,3),pi=1:5] or even: foo.fits[pha==1 (10,10,3),pi==2 (20,20,8,5)] In these cases, it is not obvious whether the command should utilize an or or and operator. ...

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• *imcnts* - Azimuthal profile of an extended source
• SAO RSDC Home Page - RRA - PSPC
• The AstroStat Slog Kalman filter

... 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. ...

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• Study of radio spectra and variability of GPS sources
• Detection of polarized radiation sources with unusual spectral characteristics
• Metagalaxy sector, archive 2015

... The filter "Lighting Effects" is a freebie that came with this program, and in my opinion is practically worth the whole purchase price all by itself. ... You can select different light sources, and combine them with texture channels to warp your image. ... Depending on how you use it, pure white is the highest point on the image, and black the lowest. ... You can adjust the brightness and spread here, or choose other types of lighting. ... Use these if your image is turning out too dark or light. ...

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• Open Source Convention
• APOD: December 31, 1995 - The X-ray Sources of M31
• Marc Bless - The GIMP

RTT150 . ... This search system is designed for generating the necessary information on series of pointings (observations of each source consist of sets of exposures with different filters and sometimes with different exposure times) for observed sources. Search results appear at the separate page as a table with the following data: . DATE - real (not evening!) observations date (in YYYY-MM-DD format); . ... Bin - minimal CCD binning mode (may vary during the observations); . ...

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... 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. ...

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• #tex2html_wrap_inline12480#-#tex2html_wrap_inline12482# Dependence for the
• X-ray Galactic Sources and Binary Radiopulsars as Probes of the Initial Mass
• Radiopulsars as Sources of Cosmic Rays

... 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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• AstroWeb -- Internet Resources for Astronomers
• A New PROS Task for Calculating HRI Source Intensities or Upper Limits
• ADASS 2002 Conference Proceedings

... 435Snellen+ 15 GHz, and peak flux densities ranging from ~ 40 to ~ 900 mJy. Counts of GPS sources in our sample as a function of flux density have been compared with counts of large scale sources from WENSS scaled to 2 GHz, the typical peak frequency of our GPS sources. ... However, we note that the redshift distributions of GPS and large scale radio sources are different and that this hampers a direct and straightforward interpretation of the source counts. ...

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• A Sample of 669 Ultra Steep Spectrum Radio Sources
• Spectra of complete sample of sources from the PMN survey
• Source Positions

... In one situation, we can use light from quasars to probe the material between us and them because that light may pass through one or more galaxies or gas clouds on its way to us. The gas inside the galaxies or the intergalactic clouds acts then as a filter, absorbing selected wavelengths from the quasar light. ... Light from a quasar must pass through clouds of gas and even faint galaxies -- each leaving its imprint on the light -- before we receive it here on Earth. ... Gravitational lensing . ...

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• ASP: Exploring the Solar System: Further Guides and Resources
• ASP: Black Holes: An Introductory Resource List
• ASP: The Moon: A Resource Guide

... 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. ...

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• Work Scan Program + Data Viewer (IDL widget)
• Writing programs that use comedi and comedilib
• More IPC Resources

... This book uses many authentic sources such as factual texts, newspaper articles, features and TV schedules, instruction manuals, everyday signs, stories, quizzes, emails and diary entries. ... Чернила для принтера HP HP Photosmart 425. цвета: Cyan, Magenta, Yellow, Black, емкость баночек - по 100 мл. ...

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... Galaxy Evolution home . ... The origin and evolution of radio sources . Radio sources and their environments . ... We are investigating how this interaction effects galaxy evolution in general as well as the feedback effect of the radio source on its host galaxy and AGN. ... One direct observational manifestation of this interaction is the existence of extended regions of emission-line gas which show a clear spatial relationship to the radio source itself. ...

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• Introduction to SCons Bojan Nikolic web pages (r. 329)
• Astrophysics Group Variability studies
• Galaxy Evolution: The origin and evoltuion of radio sources

... Apache HTTP Server Version 2.4 . ... Filter Input (request) and Output (response) content using sed syntax . ... sed_module . ... mod_sed is an in-process content filter. ... However, unlike sed , mod_sed doesn't take data from standard input. Instead, the filter acts on the entity data sent between client and server. mod_sed can be used as an input or output filter. mod_sed is a content filter, which means that it cannot be used to modify client or server http headers. ... mod_sed . ...

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• How filters work in Apache 2.0 - Apache HTTP Server
• Arcetri designs innovative superconductor microwave filters for the Sardinia
• Developer Documentation for the Apache HTTP Server 2.4 - Apache HTTP Server

... 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). ...

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• source comment

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" . ...

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• Re: Re: Thanks For Making And And Of An Excellent Open Source Progra - an
• Re: Thanks For Making And And Of An Excellent Open Source Progra - an Astronomy

lsst.tcc љ 1.2.2-3-g89ecb63 . ... Files . ... python . ... cmd . showInstrument.py . ... 35 љ kwStrs.append( "Inst=%s; InstPos=%s; GCView=%s" % ( . ... 48 љ kwStrs.append( "IImScale=%0.4f, %0.4f; IImCtr=%0.2f, %0.2f; IImLim=%0.2f, %0.2f, %0.2f, %0.2f" % ( . ... 61 љ kwStrs.append( "GImScale=%0.4f, %0.4f; GImCtr=%0.2f, %0.2f; GImLim=%0.2f, %0.2f, %0.2f, %0.2f" % ( . ... 69 љ kwStrs.append( "GImScale=NaN, NaN; GImCtr=NaN, NaN; GImLim=NaN, NaN, NaN, NaN" ) . ... tcc.cmd.showFocus.showFocus . ...

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• lsst.tcc: include/tcc/tcsShim.h Source File
• TUI:Scripts:Built In Scripts:NICFPS:Dither:Point Source
• lsst.tcc: python/tcc/cmd/setBlock.py Source File

Radio Interferometry Principles . Radio Interferometry Signal Processing . ... A radio interferometer consists of a pair of directional antennas that are tuned to receive radio emissions from a source in a desired RF band. ... The antennas are pointed at the radio source of interest and are set up to receive the signal and process it into a form suitable for transmission to the correlator. ... In connected element interferometry, the digital signal goes directly to the correlator. ...

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• RADIOSUN Workshop 2014