... M13: A Great Globular Cluster of Stars . ... M13 is a colossal home to over 100,000 stars, spans over 150 light years across, lies over 20,000 light years distant, and is over 12 billion years old. ... Publications with keywords: M13 - globular cluster . Publications with words: M13 - globular cluster . ... The Center of Globular Cluster Omega Centauri . Omega Centauri: The Largest Globular Cluster Known . Globular Cluster NGC 2419 . ... 47 Tuc: A Great Globular Cluster of Stars . ...

The Astronomical Society of Australia has been asked by STANDARDS AUSTRALIA to compile a list of "designated" optical observatories that are valuable resources for (i) research, (ii) education and (iii) community use. The ASA is the final arbiter of whether any particular observatory is so designated. ... Upon receipt of your application form, your observatory will be entered on a list of "Pending Designated Observatories" on the ASA Home Page. ... It will be emailed for you. ... Email . ...

... 2000 March 1 . M13: The Great Globular Cluster in Hercules . ... Explanation: M13 is one of the most prominent and best known globular clusters . ... M13 is a colossal home to over 100,000 stars, spans over 150 light years across, lies over 20,000 light years distant, and is over 12 billion years old. At the 1974 dedication of Arecibo Observatory , a radio message about Earth was sent in the direction of M13 . ... About APOD | ...

... 13th European VLBI Network Symposium . and Users Meeting . on September 20-23, 2016. ... 13th European VLBI Network Symposium and Users Meeting on September 20-23, 2016. ... Year book "Ephemerides of Minor Planets for 2016" on-line . ...

... Tonight's Sky . ... Sky this Month . ... space physics . ... The Sky This Week: April 1 - 10 . ... Sky this Week . ... Sky Events . Get to Know the Night Sky . Tour the Deep Sky . Sky Guide . ... Observing springtime deep-sky objects with a large telescope . ... Johns Hopkins University Applied Physics Lab, Laurel, Maryland . ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...

... 2000 January 4 . Galaxies Cluster Toward the Great Attractor . ... The galaxies pictured above are part of a cluster of galaxies called ACO 3627 near the center of the Great Attractor . ... The Great Attractor is a diffuse mass concentration fully 250 million light-years away, but so large it pulls our own Milky Way Galaxy and millions of others galaxies towards it. Many of the galaxies in ACO 3627 are slowly heading towards collisions with each other. ... About APOD > . ...

... Australia Telescope Compact Array . ... Compact Stellar Systems in the Fornax Cluster: Super-massive Star Clusters or Extremely Compact Dwarf Galaxies? ... We suggest that these objects are either super-massive star clusters (intra-cluster globular clusters or tidally stripped nuclei of dwarf galaxies) or a new type of low-luminosity compact elliptical dwarf (``M32-type'') galaxy. ... Keywords: galaxies: star clusters -- galaxies: dwarf -- galaxies: formation . ... Properties of the compact objects ...

... Институт прикладной математики им. М.В.Келдыша . БАЛЛИСТИЧЕСКИЙ ЦЕНТР . О Центре . ... Баллистический Центр Института прикладной математики им. М.В.Келдыша РАН . Баллистический центр (БЦ) ИПМ им. М.В. Келдыша создан по предложению С.П. Королева и М.В. Келдыша в 1965 году. На него были возложены работы по баллистико-навигационному обеспечению (БНО) управления полетом пилотируемых кораблей и автоматических космических аппаратов научного и народно-хозяйственного назначения. ...

... Decelerating and Dustfree: Efficient Dark Energy Studies with Supernovae and Clusters . Abstract . ... The Onset of Star Formation in the Universe: Constraints from Nearby Isolated Dwarf Galaxies . ... An ACS SNAPshot Survey . ... A Snapshot Survey of Brightest Cluster Galaxies and Strong Lensing to z = 0.9 . ... ACS survey observations of eight clusters are scheduled for the coming week, together with follow-up NICMOS observations of a supernova detected in previous ACS images. ... Past weeks: . ...

... Reconstruction of peculiar velocities of galaxies from large-scale redshift catalogues provides an exemplary application of optimal transport. ... U Frisch, S. Matarrese, R. Mohayaee, A. Sobolevsky, A reconstruction of the initial conditions of the Universe by optimal mass transportation , Nature, 417 (2002) 260-262 ( arXiv:astro-ph/0109483 ) . ... R. Mohayaee, A. Sobolevskii, The Monge Amp re Kantorovich approach to reconstruction in cosmology , Physica D (2008) accepted ( arXiv:0712.2561 ) . ...

Please enter the lightcurve file name and period search parameters: . Lightcurve file: . ... Apply the Heliocentric correction and convert all dates to Terrestrial Time (TT)? ... Also, the Heliocentric correction cannot be applied to such lightcurves. ... This period search service is also available at the mirror sites: Mirror 1 , Mirror 2 , Mirror 3 , Mirror 4 . You may download the latest source code distribution and install the period search service at your own web server. ...

... Back-illuminated CCDs with resolution greater than 4096 x 4096 elements, frame rates in excess of 10,000 frames per second, and noise lower than 3 electrons rms. have been independently demonstrated. Additionally, back-illuminated CCD cameras have been shown well suited for significant low light level imaging applications. However, the application of back-illuminated CCDs for night vision applications requires that all performance characteristics be optimized in a single manufacturable device. ...

... Posts tagged ?globular cluster? ... Posted by hlee . Someone emailed me for globular cluster data sets I used in a proceeding paper, which was about how to determine the multi-modality (multiple populations) based on well known and new information criteria without binning the luminosity functions. ... On the other hand, obtaining globular cluster data sets was easy because of available data archives such as VizieR . ... Category: arXiv , Astro , CHASC , Data Processing , Imaging , Jargon , Stars | ...

... Milky Way . ... Map of the Milky Way (based on data from NASA's Spitzer Space Telescope) showing its two major stellar arms and central bar. ... ТљIn written science fiction, one often encounters another navigational convention, where towards the Galactic Centre is described as т??Corewardт??, away from the Centre towards the rim of the Milky Way is т??Rimwardт??, objects in the direction of the Galaxyт??s rotation are т??Spinwardт??, while objects in the opposite direction are т??antispinwardт?? ...

... Telescopes . ... The time requests are accepted in an electronic version with on-line form in Russian or English. ... Unregistered request will be disregarded by the Large Telescopes Programm Committee. In exclusive cases the secreatry of the Committee is entitled to accept an observational time request given permission of the Chairman of the Committee or the director of the SAO RAS. The Program Committee considers generally one time request submitted by the principal applicant. ...

... Up: Web Services and Publications . ... This is being done natively in new Java-based applications while older applications are being wrapped to provide Web Service interfaces. ... Data access is via the network enabled NDF data access layer for the older, non-Java applications and via the new HDX layer (Giaretta et al. 2003) for the pure-Java application. ... Use of Web Services as a new messaging system will allow Starlink applications increased flexibility. ...

... Persons interested in participating the MSS-09 Conference should send applications before April 25, 2009 to IOC to one of the following e-mail addresses : . ... Preliminary title of the talk . ... Postal address . ... E-mail address for further communications . ... The detailed preparation instructions the full volume papers submitting and their publication will be sent later. The visas info and hotel accommodation one will be submitted later. ...

... Science . ... Science Users Information > Science Publications > Science Announcements > Applications ERC Starting Grants Hosted at ESO . ... Observing Facilities . ... ESO welcomes applications from qualified researchers wishing to conduct their frontier research at ESO with the support of one of the prestigious European Research Council ( ERC ) grants in the Starting Grant category. ... The ESO application serves as a preliminary step to grant the host approval that is required by the EU. ...

... Structure of Data . ... Catalog . ... In SAI OCL Catalog, we introduce our work on investigation of the Milky Way system of open star clusters. The main goal of our study is a search for new clusters using huge surveys. 168 new clusters have been already discovered by us using J,H,Ks data from 2MASS point source catalog. ... For 141 new clusters, we found their physical parameters using J,H,Ks data from 2MASS catalog and, for a number of clusters, our UBVRI CCD observational magnitudes. ...

Next: CCD Scientific Performance Up: CCD Operation Previous: CCD Operation . A visible light photon releases only one electron-hole pair, and consequently many photons must be collected in each pixel for a measurable signal to be produced. ... This use as an imaging X-ray spectrometer requires that no more than one photon is incident on each pixel in any image frame, which imposes a requirement that image collection times be limited to ~seconds for typical astronomical applications. ...