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 (>5688) - hea-www.harvard.edu/ )

• Chandra Images for G016.7+00.1
• Chandra Images for G014.7+09.1
• Chandra Images for G016.0+00.0

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: . ... The second column contains B-V. See Target Count Rates . ... If one knows the spectral index (which is zero for a source with a flat continuum), V + AB can also be calculated as the monochromatic Oke system magnitude at the corrected mean wavelength of the filter: . ...

Еще в разделе: (Показать все результаты (>17777) - www.stsci.edu/ )

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

... 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. ...

Еще в разделе: (Показать все результаты (>12439) - xmm.vilspa.esa.es/ )

• General source table layout
• Parameters
• FILTER_CORR_RATE

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 (>3506) - www.sao.ru/ )

• Primary Catalog
• The Parkes 6 cm Galactic Survey
• The Second EGRET Catalog of High-Energy Gamma-Ray Sources

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 (>813) - www.iki.rssi.ru/ )

• Venus Picture List
• Earth Picture List
• The Sun

... 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 . ...

Еще в разделе: (Показать все результаты (>1425) - www.astrosociety.org/ )

• ASP: The Astronomy of Many Cultures: A Resource Guide
• ASP: Good Astronomy Activities on the WWW
• ASP: Black Holes: An Introductory Resource List

... 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 (>1681) - www.adass.org/ )

• An Extragalactic Point Source Simulator for SIRTF Pipeline Testing
• Access to Data Sources and the ESO SkyCat Tool
• Recreating Einstein Level One Processing Exposure Masks and Background Maps in

... ATNF Home . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Murchison Radio-astronomy Observatory . ... Parkes radio telescope . ... Mopra radio telescope . ... Online Resources . ... Visiting Parkes radio telescope . ... Parkes radio telescope webcam . ... H Emission From Point Sources In The Magellanic Clouds . ... Large numbers of the many types of emission-line object that are found in the Magellanic Clouds were first identified through H surveys of one kind or another...

Еще в разделе: (Показать все результаты (>27017) - www.atnf.csiro.au/ )

• casacore: casa/Logging/LogSinkInterface.h Source File
• casacore: tables/LogTables/LogFilterTaql.h Source File
• casacore: casa/Logging/LogFilter.h Source File

Venus in visible light (violet filter) 17k jpg . Venus in visible light 73k gif . image from Pioneer Venus 15k jpg ; 28k jpg ( caption ) . ... UV image from HST WFPC2 (false color) 23k jpg ; 99k gif . ... New Magellan mosaics (5 hemispheres) 13500k tiff ; ( caption ) . ... 7 pancake volcanoes, alpha region 227k gif ; . Lada Regio, 47 deg S, 25 Long, showing mountains and craters 121k gif ; . ... False color IR image of Venus' lower clouds as seen by Galileo 37k jpg 112k gif ( caption ) . ...

Еще в разделе: (Показать все результаты (>5759) - www.sai.msu.su/ )

• Earth Picture List
• Hands On; Lighting Effects1
• Jupiter Picture List

... 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 (>1222) - jet.sao.ru/ )

• PUBLICATIONS IN 1998
• Spectra of RC-catalog sources

The A/D rms values versus mixer gain were measured on the sky with alfa to see how much range we had around the optimal operating level (an A/D rms of 30 counts). ... Gain vs attenuation in the mixer chassis: . ... gain variable=0 : bbmchassis gain: 14db - 31 db Attn = -17db of gain . ... The plots show the A/D rms counts vs bbm gain . ... 7.5 -12.5 U5 Attn . ... The measured output level from the mixer chassis (beam5a low band) was -4dbm so there is 4db more gain in the mixer chassis than expected. ...

Еще в разделе: (Показать все результаты (>4608) - www.naic.edu/ )

• Technical Data for the Arecibo Airglow and Optical Instrumentation
• Index of /~phil/hardware/vertex/sharemegsvertex/lcu/pcr/c600/source/PWB
• Calibration Scans on Continuum Sources

... Flux Sign Expo . ... Flux, mCrab . ... The map above is movable . The image is shown in significance with a squared root color map ranging from 0 to 25. ... Original shows mosaics with all data available. Flux map Error map Significance Exposure . Flux and error maps are in mCrab units. ... Exposure maps are in ksec. INTEGRAL/IBIS 9-year Galactic Hard X-Ray Survey* , A , Volume 545, id.A27 { NASA ADS | ... 7-year Galactic Bulge map , 2009 . 9-year Galactic survey , 2012 . ...

Еще в разделе: (Показать все результаты (>1239) - hea.iki.rssi.ru/ )

... Energy . ... Solar Wind . ... Field . ... The Sun is our nearest star and the source of energy for life on Earth. ... For centuries astronomers wondered whether they were clouds floating in the Sun's atmosphere, but we now know that they really are huge regions of magnetic field, about as intense as the field at the poles of an iron magnet. For some reason the field slows down the flow of heat from the Sun's interior and keeps sunspots slightly cooler than their surroundings. ... Solar Eclipses . ...

Еще в разделе: (Показать все результаты (>6423) - www.cosmos.ru/ )

• "Exploration" as a Classroom Resource
• CYlindrical GAmma-ray Monitor CYGAM -
• Combining Colors

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 (>600) - 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

... General information . ... Staff . Research staff . Technical, administrative & librarian staff . ... Staff in alphabetic order . Research . ... Technical reports . Projects . ... General interest seminars . ... IT Services . ... Information . ... Historical highlights . Historical research . Historical archive . ... Projects and events . Online resources . ... Information Services . Catalog and Resources: . ...

Еще в разделе: (Показать все результаты (>10821) - www.arcetri.astro.it/ )

• On line Resources
• Online resources
• Arcetri designs innovative superconductor microwave filters for the Sardinia

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 (>469) - 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
• Re: Re: Thanks For Making And And Of An Excellent Open Source Progra - an

... Armagh Observatory 2001 July */ #declare Shining_Dwarf_Core = sphere{ 0,0,0 , 0.99 hollow on interior{ media{ absorption rgb 0.0 , 0.0 , 0.0 scattering { 5 rgb 1.0 , 1.0 , 1.0 eccentricity + 0.1 } density { spherical color_map{ [0.00 rgb 0,0,0 ] [ 0.05 rgb 0.1 , 0.1 , 0.5 ] [ 0.2 rgb 0.2 , 0.2 , 0.6 ] [ 0.5 rgb ...

Еще в разделе: (Показать все результаты (>2225) - star.arm.ac.uk/ )

• Resources | OASES Over us All is the SElfsame Sky | OASES 2010
• Armagh Observatory: Chris Winter [ lte-codes ]
• Mysterious music source revealed | International Year of Astronomy in Ireland |

... Amazingly detailed, this false-color x-ray image is centered on the galaxy Cygnus A. Recorded by the orbiting Chandra Observatory, Cygnus A is seen here as a spectacular high energy x-ray source. ... The big beautiful spiral galaxy is located just 10 million light-years away, behind a veil of foreground stars in the high and far-off constellation of Cepheus. ... The graceful spiral structure seen in this computer visualization does not portray winding spiral arms in a distant galaxy of stars. ...

Еще в разделе: (Показать все результаты (>119521) - www.astronet.ru/ )

... 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 (>661) - xray.sai.msu.ru/ )

• Be/X-ray binaries and candidates
• The catalogue
• Radiopulsars as Sources of Cosmic Rays

Stellarium 0.12.3 . ... FileљStructure . FileљList . ... core . modules . Meteor.hpp . ... 46 љ Meteor ( const StelCore *, double v); . ... 64 љ Vec3f position; . 65 љ Vec4f color; . ... 67 љ : position( Vec3f (pos[0], pos[1], pos[2])), color(color) {} . 68 љ VERTEX_ATTRIBUTES( Vec3f Position , Vec4f Color); . ... 75 љ Vec3d obs; // observer position in meteor coord. system . ... 88 љ double xydistance; // distance in XY plane (orthogonal to meteor path) from observer to meteor . ...

Еще в разделе: (Показать все результаты (>2492) - astro.uni-altai.ru/ )

• Stellarium: core/renderer/StelVertexAttribute.hpp Source File
• Stellarium: core/renderer/GenericVertexTypes.hpp Source File
• Stellarium: core/renderer/StelTextureParams.hpp Source File