Next: A box, to include Up: To produce a region Previous: To produce a region . select cursor and circle . When in the image window, the mouse now has a box shape with an arrow at the upper left corner. The mouse buttons act as follows: . LEFT - to move the center of the circle at the position of the arrow point. ... RIGHT - idle. center the circle at the point source by positioning the arrow point and clicking on the LEFT mouse button. A circle will appear at the arrow position. ...

home education > resources . ... Resources . ... Astronomy Education Bibliography . ... Black Holes: An Introductory Resource List . ... Castelvecchi, D. "A New Breed of Black Hole" in Sky Telescope , Apr. 2006, p. 36. ... Charles, P. Wagner, R. "Black Holes in Binary Stars: Weighing the Evidence" in Sky Telescope , May 1996, p. 38. ... Nadis, S. "The Secret Lives of Black Holes" in Astronomy , Nov. 2007, p. 28. ... Nadis, S. "Black Holes: Seeing the Unseeable" in Astronomy , Apr. 2007, p. 26. ...

The Astronomy Net . ... Visited 4818 times - Selected 51 months ago . ... Visited 7900 times - Selected 52 months ago . ... Visited 6629 times - Selected 51 months ago . ... Visited 15297 times - Selected 51 months ago . ... Visited 8442 times - Selected 51 months ago . ... Visited 3806 times - Selected 51 months ago . ... The Greensboro Astronomy Club provides Greensboro and surrounding communities a source of astronomy related activities and information. http://www.greensboroastronomyclub.org/ . ...

... About ATNF overview . ... Governance overview . Australia Telescope Steering Committee . ... Parkes radio telescope . ... Visiting Parkes radio telescope . ... Parkes radio telescope webcam . ... Finding the Bivariate Brightness Distribution of galaxies from an H I selected sample . ... A method is presented that will enable the bivariate luminosity/surface brightness distribution of galaxies to be determined from a relatively small H I selected sample. ... PICASSO - an automated galaxy finder . ...

Next: Sample Properties Up: Sample Identification Previous: Comments on Individual Sources . Previously known serendipitous sources were selected by cross-correlating WGACAT with a variety of optical and radio catalogs, including the Ver?n-Cetty & Ver?n (1996) and Hewitt & Burbidge (1993) quasar catalogs, the 1 Jy (Stickel et al. 1994) and S4 (Stickel & K?hr 1994) radio catalogs, and the BL Lac catalog of Padovani & Giommi (1995b). ... Details of these 97 objects are given in Table 6. ...

USING THE CORRELATION BETWEEN ISGRI SURVEY RESULTS AND OTHER CATALOGUES TO AID SOURCE IDENTIFICATION John B. Stephen, A. Malizia and L. Bassani IASF-INAF, Via P. Gobetti 101, 40129 Bologna, ITALY, E-mail: stephen@iasfbo.inaf.it ABSTRACT In order to help in the identification of INTEGRAL/ISGRI sources, we have developed a software package which allows a rapid and detailed cross-correlation to be performed between various source catalogues. ... We show below some preliminary results from this analysis. ...

... Canadian Astronomy Data Center, DAO/NRC . SkyCat is a tool that combines image visualization with access to astronomical catalogs and data archives. SkyCat uses a standardized URL syntax to access a large number of data sources on the net. ... More information on SkyCat can be found at the SkyCat Web site. The ESO SkyCat Tool includes the following features: . ... PostScript color printing of the display (image + graphics), . ... overlay catalog sources on an image, . ...

... The 7 and 15 um observations of selected fields in the Galactic Plane obtained with ISOCAM during the ISOGAL program offer an unique possibility to search for previously unknown YSOs, undetected by IRAS because of lower sensitivity or confusion problems. ... The main indications of the previous analysis are confirmed, but the criteria for selecting YSO candidates had to be revised to select only bright objects, in order to limit the contamination of the sample by Post-MS stars. ...

... We selected 11 PC's at the Institute and try to provide them with the access to resources earlier reachable only from Mercury , Ursa . ... Some access to A and A as well as other Springer and IOP journals is now available via the Sci.Dig.Lib. of the RFBR. ... During 2001 we lost access to recent issues of Astron. ... An information about our access to electronic journals is now available in Russian as a ( TeX file ). ... Access to more issues of the journals of Kluwer , Elsevier , etc appeared. ...

... The ROSAT Bright Survey: II. Catalogue of all high-galactic latitude RASS sources with PSPC countrate CR > 0.2 s -1 . ... 1S We present a summary of an identification program of the more than 2000 X-ray sources detected during the ROSAT All-Sky Survey (Voges et al. 1999) at high galactic latitude, |b| > 30degr , with countrate above 0.2 s -1 . This program, termed the ROSAT Bright Survey RBS, is to more than 99.5% complete. ...

... Tonight's Sky . ... The Magazine . ... Observing . ... Gravitational wave search provides insights into galaxy evolution and mergers . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Astronomy for Kids . ... January 2006 resources . FROM THE January 2006 ISSUE . ... Get instant access to subscriber content on Astronomy.com! ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ... Astronomy Magazine . ...

This module provides for loading of executable code and modules into the server at start-up or restart time. ... On Windows, mod_dll was used in beta release 1.3b1 through 1.3b5. mod_so combines these two modules into a single module for all operating systems. ... Because Apache for Windows does not have the Configure program of Apache for Unix, the module's source file must be added to the ApacheCore project file, and its symbols must be added to the os\win32\modules.c file. ... Module: mod_so . ...

... Telescope concept . ... The Submillimetron Project is dedicated to astronomical studies at the submillimeter and far infrared wavelengths using a cryogenic telescope located on the Russian segment of the International Space Station (ISS). The Astro Space Center of the Lebedev Institute of the Russian Academy of Sciences is responsible for developing the Submillimetron Project. ... Currently, the Astro Space Center is carrying out a pre-Project study under contract with the Russian Space Agency. ...

Measurement of Sky Brightness at the Iranian National Observatory Davoud Afshari1 and Sadollah Nasiri1,2 1Physics Department, Zanjan University, Zanjan 45195-313, Iran; Institute for Advanced studies in Basic Science (IASBS), Zanjan 45195-1159, Iran; Measurement of light pollution 2 Introduction Among 34 candidate sites at the central part of the country, 5 sites namely Garkesh (in Kashan ), Kolahbarfi(in Kashan ), Deynava (in ... One of these is light pollution. ...

Stellarium 0.12.3 . ... FileљStructure . ... core . StelObjectMgr.hpp . ... 58 љ bool findAndSelect ( const StelCore * core, const Vec3d & pos, StelModule::StelModuleSelectAction action= StelModule::ReplaceSelection ); . ... 66 љ bool findAndSelect ( const StelCore * core, int x, int y, StelModule::StelModuleSelectAction action= StelModule::ReplaceSelection ); . ... 72 љ bool findAndSelectI18n ( const QString &nameI18n, StelModule::StelModuleSelectAction action= StelModule::ReplaceSelection ); . ...

... Guider functions . ... Guide Sensor Performance . ... Guide Sensor Sky Coverage/ Star Availability . Guide Star Selection Criteria . ... Guide fiber organization and reach at plug plate . ... Plug plate holes for guide stars are identical to those for science FO . ... FOV for each of 9 guide stars is 7.4 arcsec dia. (0.45 mm FO, Sumitomo IGN-05/10) . ... Selected guide stars must have no neighbor stars within TBD (5 arcsec) radius that have a brightness within TBD (5 mag.) of guide stars . ...

... APOD is 20 Years Old Today . 16.06.2015 . ... A Colorful Lunar Corona . ... The effect is created by the quantum mechanical diffraction of light around individual, similarly-sized water droplets in an intervening but mostly-transparent cloud. M101: The Pinwheel Galaxy . ... Shortly before Mars' June 2015 conjunction, the Curiosity Rover celebrated 1000 sols on the red planet. ... The Medusa Nebula . ... Fly Over Dwarf Planet Ceres . ... Galaxy NGC 7714 After Collision . ... 2015 2016 . ...

ACE Real Time Solar Wind (RTSW) data, Kp index, solar and geophysical forecasts are contributed by the U.S. Department of Commerce, NOAA, Space Environment Center and are available to broad community at http://www.sec.noaa.gov/index.html . ... The Kp planetary index is prepared by the U.S. Dept. of Commerce, NOAA, Space Environment Laboratory. from preliminary data provided by the contributing stations and the U.S. Geological Survey. ... Instrument Web site is at URL: http://swepam.lanl.gov ...

For calculating model spectra of early-type helium stars in LTE, we maintain a database of atomic data for, mostly, blue-visual absorption lines of light elements. The data is sorted with one file for each ion. ... III = ++ . ... It will work on both complete linelists (including the atomic data at the start and references at the end) or raw ion files (such as Ni2.d). ... A Fortran utility to convert linelists downloaded from the Vienna Atomic Line Database into the new QUB format. synspec_qub . ...

... Ultraluminous X-ray sources (ULXs) are located in external galaxies, their X-ray luminosities (10 39 - 10 41 erg/s) are thousand times greater than those of brightest black holes in the Galaxy. ULXs may be supercritical accretion disks around black holes of stellar masses (~10 Solar masses) like that in SS433, or they may be a hypothetical intermediate-mass black holes (hundreds - thousands Solar masses) with standard accretion disks. ... 2) The ULX progenitors were ejected from the star clusters. ...