True Color Image Gallery: Galactic SNR | ... Position of Central Source (J2000) : ( 05 40 11.1, -69 19 55.2 ) . ... Radio Images Page . ... Exposure uf . ... Trailed Image of the central source is significant. ... 0.3 - 10.0 . ... central source . ... nH was derived by fitting the trail of central source which is believed not to be piled-up. see fit detail page for more about the fit. see chandra spectrum page for region used. ... 2001 , ApJ, 560, 742 : Chandra ACIS imaging and spectroscopy . ...

Еще в разделе: (Показать все результаты (>5118) - hea-www.harvard.edu/ )

• Chandra Images for G076.9+01.0
• Chandra Images for G109.1-01.0C
• Chandra Images for G023.2-00.2

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. ...

Еще в разделе: (Показать все результаты (>3833) - www.sao.ru/ )

• Primary Catalog
• VLA 404 compact sources
• The ROSAT All-Sky Survey Faint Source Catalogue

... 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. ...

Еще в разделе: (Показать все результаты (>13407) - xmm.vilspa.esa.es/ )

• Source selection

... 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 . ...

Еще в разделе: (Показать все результаты (>20143) - www.stsci.edu/ )

• Appendix B: Point Source SNR Plots
• Plots for Estimating Point Source SNR

... 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. ...

Еще в разделе: (Показать все результаты (>1737) - www.adass.org/ )

• An Extragalactic Point Source Simulator for SIRTF Pipeline Testing
• QPSIM: An IRAF/PROS Tool for Source Simulation
• ADASS 2002 Conference Proceedings

... comparison of the system performance for alfa and lbw at OH (.ps) ( .pdf ) (no amps in) . comparison of the system performance for alfa and lbw at OH (.ps) ( .pdf ) (with amps in) . ... On 01apr05 the system performance was measured using the continuum source CTA21 (B0316+162. ... The plots show the comparison of the system performance for alfa and lbw at OH (.ps) ( .pdf ) (no amps installed). ... Black is polA, red is polB. ... G/T alfa)/(G/T lbw) . ... The polB/polA performance ratios are: . ...

Еще в разделе: (Показать все результаты (>4617) - www.naic.edu/ )

• http://www.naic.edu/~phil/mbeam/calibration/01apr05_oh_performance.html
• a2584
• Calibration Scans on Continuum Sources

... 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...

Еще в разделе: (Показать все результаты (>4290) - www.mrao.cam.ac.uk/ )

• NVSS Source Search ($Revision: 1.6 $ - running v2.17)
• G189.1+3.0
• The 7C(G) survey

... 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....

Еще в разделе: (Показать все результаты (>27683) - www.atnf.csiro.au/ )

• casacore: casa/Logging/LogSinkInterface.h Source File
• A Post-Correlation equivalent to an Adaptive Filter
• Adaptive Filter (schematic)

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" . ...

Еще в разделе: (Показать все результаты (>538) - www.astronomy.net/ )

• The Sun Energy Source Is Not Nuclear Fusion But Magnetic Fields. - an Astronomy
• Black Holes As A Source Of Dark Matter/energy? - an Astronomy Net Blackholes2

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 . ...

Еще в разделе: (Показать все результаты (>618) - www.aaa.org/ )

• Julian Parks Gallery ? Amateur Astronomers Association of New York
• Poe Park, The Bronx ? Solar Observing ? Amateur Astronomers Association of New
• Observing Resources for Amateur Astronomers ? Part 3: Advanced Observers ?

lsst.tcc љ 1.2.2-3-g89ecb63 . ... Files . FileљList . ... python . ... mov . checkSegment.py . ... 11 љ @param[in] pA position of starting point at time t = 0 . ... 13 љ @param[in] pB position of ending point at time t = dt . ... 16 љ @param[in] doPos log test position? . ... 20 љ @param[in] axisLim axis limits (a tcc.base.AxisLim) . ... 36 љ Even if you request that position limits be checked, some paths . ... 63 љ # check position limits; expand the limit to include the starting position . ...

Еще в разделе: (Показать все результаты (>1129) - www.apo.nmsu.edu/ )

• lsst.tcc: python/tcc/parse/getPVTPxPMRadVel.py Source File
• lsst.tcc: python/tcc/cmd/showInstrument.py Source File
• lsst.tcc: python/tcc/axis/coordConvWithFP.py Source File

... 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. ...

Еще в разделе: (Показать все результаты (>1246) - jet.sao.ru/ )

• di_eks
• The peculiar post-AGB supergiant IRAS04296+3429: optical spectroscopy and its
• SCORPIO: IFP Gallery

... General information . ... Staff . Research staff . Technical, administrative & librarian staff . ... Staff in alphabetic order . Research . ... Solar physics . ... Information . Resources and catalogs . ... Historical highlights . Historical research . Historical archive . ... Online resources . Friends of Arcetri . ... NSSDC - National Space Science Data Center . ... a rXiv e-Prints archive . ... High Energy Astrophysics Science Archive Research Center . ...

Еще в разделе: (Показать все результаты (>10835) - www.arcetri.astro.it/ )

• Resources and catalogs
• Online resources
• Arcetri designs innovative superconductor microwave filters for the Sardinia

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 . ...

Еще в разделе: (Показать все результаты (>617) - zebu.uoregon.edu/ )

• Physics 162 Winter 1996
• Physics 161: Winter 1999 Physics 161: Energy and The Environment Fall 1999
• Physics 162: Alternative Energy; Spring 1998

... Exposure Time Calculator (ETC) . Survey processing . ... VISTA is a 4-m class wide field survey telescope for the southern hemisphere, equipped with a near infrared camera (1.65 degree diameter field of view at VISTA's nominal pixel size) containing 67 million pixels of mean size 0.34 arcsec and available broad band filters at Z,Y,J,H,K s and a narrow band filter at 1.18 micron. A wide field visible camera, if constructed, could also be used on VISTA. ... Tile . ... ESO VISTA Public Surveys . ...

Еще в разделе: (Показать все результаты (>28) - www.vista.ac.uk/ )

• VISTA ETC - Exposure Time Calculator

... 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. ...

Еще в разделе: (Показать все результаты (>660) - xray.sai.msu.ru/ )

• Radiopulsars as Sources of Cosmic Rays
• Population Synthesis of X-ray Sources at the Galactic Center
• X-ray Galactic Sources and Binary Radiopulsars as Probes of the Initial Mass

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) . ...

Еще в разделе: (Показать все результаты (>2498) - astro.uni-altai.ru/ )

• Stellarium: core/modules/Meteor.hpp Source File
• Stellarium: core/renderer/StelTextureParams.hpp Source File
• Stellarium: core/modules/Atmosphere.hpp Source File

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) . ...

Еще в разделе: (Показать все результаты (>826) - www.iki.rssi.ru/ )

• The Sun
• "Exploration" as a Classroom Resource
• Plasma source [Oulu]

... The results of long-term monitoring of Gigahertz-Peaked Spectrum sources were found the statistically significant differences (0.05 significance level) in the high-frequency spectral index distribution between subgroups of galaxies and quasars. ... This can mean that the electron energy distribution for GPS galaxies is steeper than for GPS quasars. ... The first area corresponds to GPS-quasars that have statistically larger value of redfhift, second area corresponds to GPS-galaxies. ...

Еще в разделе: (Показать все результаты (>300) - mavr.sao.ru/ )

• Detection of polarized radiation sources with unusual spectral characteristics
• Detection of unique bright radio flare of X-ray binary
• RCJ0311+0507

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. ...

Еще в разделе: (Показать все результаты (>2827) - crydee.sai.msu.ru/ )

• Dynamic HTML in Communicator
• Index of /ftproot/pub/comp/os/os2/sai/programming/source
• Index of /ftproot/pub/comp/os/os2/leo/drivers/source