True Color Image Gallery: Galactic SNR | Magellanic Cloud SNR . ... Position of Central Source (J2000) : ( 15 52 12.7, -56 18 58.5 ) . ... Radio Images Page . ... Exposure uf . ... 1965 . ... Exposure uf Exposure time of unfiltered event file . Exposure f Exposure time of filtered event file . images and spectra only for central region . ... Event 2 FITS File . ... AUX file . ... 12.7 MB . ... see fit detail page for more about the fit. see chandra spectrum page for region used. ...

... We now consider estimation of count rates for objects with stellar, power law, and emission line spectra. To estimate the number of electrons collected from a point source of apparent visual magnitude V, one can use the equation: . ... If one knows the spectral index a (which is zero for a source with a flat continuum), V + AB_nu can also be calculated as the monochromatic Oke system magnitude at the corrected mean wavelength of the filter: . ... 6.3.3 - Count Rates for Emission Line Sources . ...

... When the source-detection algorithms has run omdetect will compute raw count-rates for each detected source. For point-sources (ie those sources having widths consistent with those of the point-spread function) the count-rates are obtained by aperture photometry. For binned and unbinned images the aperture is 6 and 12 pixels, respectively. ... Extrapolate (if necessary) the source count-rate to the 12 unbinned pixel aperture, using the point-spread function for the filter. ...

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. ...

... Files . ... File List . ... casa . Logging . ... Sink from its common usage ("source/sink") as a thing 00055 // which can accept some substance or energy. ... 00105 LogSinkInterface ( const LogFilterInterface filter ); 00106 00107 // Copy semantics - copy the filter from src other / src to src this / src 00108 // group 00109 LogSinkInterface ( const LogSinkInterface other); 00110 LogSinkInterface operator= ( const LogSinkInterface ); 00111 // /group 00112 00113 ...

... 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 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" . ...

Lectures . ... Home Lectures Lecture Series 2010-2011 Lecture Series 2010-2011 ? Greening the Earth Using Space Resources? by Greg Matloff . ... Lecture Series 2010-2011 . ... Beyond New York City . ... Observing Resources for Amateur Astronomers - Part 1: Beginning Observers . ... A History of the First Forty Years of the Amateur Astronomers Association . ... Amateur Astronomers Medal . ... 2016 Amateur Astronomers Association of New York Designed by Press Customizr Powered by . ...

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 . ...

... list of all files with drifts 15apr03 to 27may03 baseband mixer chassis was tested on the bench and the tubular lowpass filters (k&E) (100 mhz) after the mixer were causing the problem. ... 10apr03 shows drift of sbc1B with the outputs of the IF2 switched sbc1B, sbc2b. The drift remains in sbc1B so the problem is after this switch (in the correlator). 14apr03 The cables leaving the attenuator box in the correlator were switched (sbc1b and sbc2b). ... At sample 4600 i retightened the switched cables....

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These pages collect together references to many pictures of the solar system that can be found on the Net. ... Since I originally compiled this list the number of relevant images has grown tremendously. ... http://www.jpl.nasa.gov/pictures/ . ... ftp://dftnic.gsfc.nasa.gov/images/gifs/ . ... http://www.jpl.nasa.gov/galileo/images.html . http://www.jpl.nasa.gov/magellan/images.html . ... http://nssdc.gsfc.nasa.gov/image/planetary/ . ... NASA Image Access Homepage (Planetary Photojournal) . ...

... 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. ...

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 . ...

... 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). ...

. Previous . Next . Create a gist index for the tsvector data type column, ts_vec. Index Scan using ts_readme_ts_vec_in on ts_readme (cost=0.00..2.38 rows=1 width=89) (actual time=0.079..0.247 rows=11 loops=1) Index Cond: (ts_vec @@ '\'databas\' | \'queri\''::tsquery) Filter: (ts_vec @@ '\'databas\' | \'queri\''::tsquery) Total runtime: 0.412 ms (7 rows)

... Luminosity (L) · · · · A source's luminosity is the power that it emits in radiation. ... NB Astronomers often say `flux' when they mean `flux density' · SI units are Wm-2Hz -1 -26 filter · Also used are Jy 10 Wm-2Hz -1 E= РРРF d dA dt Specific Intensity, Surface Brightness (I) · Specific intensity (or surface brightness) is the power received (or emitted) per unit area per unit frequency per unit solid angle. ч F at surface of a spherical source = I · · Specific intensity is independent of distance...

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); . ...

... 13-Aug-2014 12:13 106K lk_20140815_0905.tar.. 15-Aug-2014 09:06 106K lk_20140901_0823.tar.. 01-Sep-2014 08:23 103K lk_20141016_1324.tar.. 16-Oct-2014 13:25 103K lk_20141211_1708.tar.. 11-Dec-2014 17:08 103K lk_20150430_0315.tar.. 30-Apr-2015 03:15 103K lk_20150430_0420.tar.. 30-Apr-2015 04:20 103K lk_20150818_1511.tar.. 18-Aug-2015 15:11 104K lk_20151113_1903.tar.. 13-Nov-2015 19:04 105K lk_20160314_0610.tar.. 14-Mar-2016 06:11 105K . ...