True Color Image Gallery: Galactic SNR | Magellanic Cloud SNR . ... Description: large, diffuse, X-ray and radio brighter in northern half . Radio . ... Radio Images Page . ... Exposure uf . ... Exposure uf Exposure time of unfiltered event file . Exposure f Exposure time of filtered event file . ... Event 2 FITS File . ... AUX file . ... 0.3 - 10.0 . ... see fit detail page for more about the fit. see chandra spectrum page for region used. ... True Color Image . ... Radio Images . ...

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. ...

On 1 February 2002 this Mirror was upgraded from NVSSlist v2.10 to NVSSlist v2.17 . ... This form searches the source catalog produced by the NRAO/VLA Sky Survey (NVSS). ... Object name [optional] : . ... Search radius and verification halfwidth in arcseconds [Optional] : . ... Enter a list of positions to search: . ... The contents of the NVSS source catalog and the techniques used by NVSSlist to derive error estimates and other parameters are described here. ...

... ESO is building what will be the World's largest optical telescope array, The Very Large Telescope (VLT). The VLT Project organisation is responsible for the design and construction of the Unit Telescopes, including enclosures, optics, adapter-rotators and coating unit. ... Unit Telescopes Overview - This page is outdated, an update is in process. ... Secondary mirror (M2 Unit) - This page is outdated, an update is in process. ... Coating Unit - This page is outdated, an update is in process. ...

WFC3 Instrument Handbook for Cycle 24 . ... Wide Field Camera 3 Instrument Handbook for Cycle 24 > Appendix A: WFC3 Filter Throughputs > A.2 Throughputs and S/N Ratio Data . ... Note that the plots show the S/N as a function of source magnitude for exposure times as short as 0.1 s, although the minimum exposure time for the UVIS channel is actually 0.5 s. Wide Field Camera 3 Instrument Handbook for Cycle 24 > Appendix A: WFC3 Filter Throughputs > A.2 Throughputs and S/N Ratio Data . ...

... ATNF Home . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Murchison Radio-astronomy Observatory . ... Parkes radio telescope . ... Mopra radio telescope . ... Online Resources . ... A Comparison of Discrete Sources in Radio and H surveys of the Magellanic Clouds - and the Potential for the New H Survey . ... Previous Section: Discrete Sources towards the . ... The comparison of the radio and H surveys resulted in the discovery of 180 sources common to both surveys. ...

... 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. ...

... 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....

... 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. ...

. Previous . Next . Because an index has not been defined, the previous query is searching using a sequential scan over each row. This will be slow for large tables. Seq Scan on ts_readme (cost=0.00..7.63 rows=1 width=89) (actual time=0.117..0.391 rows=11 loops=1) Filter: (ts_vec @@ '\'databas\' | \'queri\''::tsquery) Total runtime: 0.516 ms

... The derived position here agrees with the position from recent ATCA observations, RA=15h 01m 34.74s, Dec=39 18 39.2" (Tasker, private communication) which found the source unresolved. Because of the relatively large position offset, the reality of the fainter component 0.12" to the west is somewhat in doubt. However, the ATCA centroid position is offset by 0.3" to the south-east of the VLBA position, suggesting that the faint component may be part of more extended structure. ...

... 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 . ...

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) . ...

home education > resources . ... Astronomy Education Bibliography . ... Black Holes: An Introductory Resource List . ... Space Science Education Resource Directory . ... Many general books and articles on astronomy include brief coverage of black holes these days. The list below is a selection of non-technical resources that you may find useful if you want to begin exploring the world of black holes in more detail. ... Some Science Fiction Stories with Good Science about Black Holes . ...

... 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 world's largest optical telescopes, the VLT (Very Large Telescope Array) are located in Chile, country that was recently hit by the 7th most powerful ever recorded earthquake, which, very sadly, is now counting many fatalities. ... You would wonder, did the mirrors survive such a strong earthquake? ... Tom Barclay , PhD student at Armagh Observatory, is about to go observing there in two weeks. ... All ESO buildings are earthquake-proof" , answered Tom. ... 28 Feb 2010 23:01 . б© 2010 OASES . ...

This course will deal with the issues of alternative energy sources and sustainable energy sources. ... We will therefore make heavy use of network resources (e.g. the Internet) for providing documentation and guides to various forms of sustainable energy technology. ... All assignments will be posted there as well. ... The course will start out covering solar energy but will then move to other alternative energy sources such as, Wind, Tides, Hydroelectric, Ocean Currents, and Geothermal. ...

... Natalya V. Raguzova and Sergei B. Popov . ... We present a compilative catalogue of Be/X-ray binaries and candidates in the Galaxy and in the Large and Small Magellanic Clouds. This catalogue contains 160 sources and provides information on names and spectral types of optical components, distances, on spin characteristics of neutron stars, and on orbital and X-ray properties of binary systems. ... Be/X-Ray Binaries and candidates in the Galaxy . Galactic sources: comments to the Table 1 . ...

Astronomy Picture of the Day . The Large and Small of M87 . ... 16.02.1999 . ... Recent images from the Very Large Array (VLA) of radio telescopes indicate that huge bubbles of hot gas not only exist but are still being created. ... The source creating and feeding the bubbles has been traced to jets pointing back to M87's center , where a supermassive black hole is thought to live. ... Publications with keywords: M87 - radio - jet - M8 . Publications with words: M87 - radio - jet - M8 . ...

... 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. ...