ntptrace [ -vdn ] [ -r retries ] [ -t timeout ] [ server ] . ntptrace determines where a given Network Time Protocol (NTP) server gets its time from, and follows the chain of NTP servers back to their master time source. ... Note that the stratum is the server hop count to the primary source, while the synchronization distance is the estimated error relative to the primary source. ... Prints verbose information about the NTP servers. ...

... American Astronomical Society . AstroWeb: Astronomy/Astrophysics on the Internet . ... NASA Astrophysics Data System: Abstract Service . ... Astronomy Astrophysics: Preprints Abstracts . ... Local archive of IAU Circulars. ... Germany, list of all Astronomical Institutes . ... Poland, Warsaw University Astronomical Observatory . Russia, Sternberg Astronomical Institute . ... Russia, Institute of Astronomy, Russian Academy of Sciences . ... USA, Astronomy and Space Science Group at GMU . ...

Journals This page contains links to servers for professional astronomy and astronomy-related journals. ApJ - The Astrophysical Journal . ApJ Online - The Astrophysical Journal Online . ApJS - The Astrophysical Journal Supplement . AJ - The Astronomical Journal . ... 1995-1999 Irish Astronomical Journal, Downshay, 12 Heather Lea Avenue, Dore, Sheffield S17 3DJ, S. Yorkshire, United Kingdom . WWW Contact: Alastair G Gunn Back to IAJ Home Page ...

Databases (NSDC) of the Natural Planetary Satellites. Sources and references of the data . NSDC: Database of astrometric observations of Natural Planetary Satellites . ... The observational data are taken from various sources: . ... The catalogue of observations of the Martian satellites published by Morley T.A. A catalogue of ground-based astrometric observations of the Martian satellites, 1877-1982, Astronomy and Astrophysics Supplement Series. 1989. vol. 77. n. 2. p. 209-226. ...

. Comment on J0226+3421 . A Compact Steep Spectrum (CSS) source observed with the European VLBI Network (EVN) (Dallacasa et al. (1995) and references therein). Recent redshift measurement by Willott et al. (1998). VLBApls home page . Last modified: 16 Oct 2000

... Galaxies 99 Cosmic background with model of cloudy interstellar medium Yu. ... Figure 1: Averaged spectrum of the cosmic background I f in frequency range 0.25 200 MHz for the Galactic poles. ... First interpretation of the cosmic noise background spectrum at broad band frequency range 0.25 200 MHz with a model of the cloudy interstellar medium ISM is presented here. ... Synthesized background spectra I f for regions of the Galactic poles at the frequency range 0.25 200 MHz is presented in Fig. ...

... Articles | ... Forums . ... 230 deg . 49 deg . ... 130 deg . ... More Info . ... 210 deg . ... 168 deg . ... 249 deg . ... 195 deg . ... 271 deg . ... 110 deg . ... 338 deg . ... July 15 . 247 deg . ... 224 deg . ... 340 deg . ... July Phoenicids (PHE) . ... August 10 . 341 deg . ... 339 deg . ... 307 deg . ... 334 deg . ... 335 deg . ... 286 deg . ... 327 deg . ... 262 deg . ... 102 deg . ... 153 deg . ... 117 deg . ... December 2 . ... 123 deg . ... 100 deg . ... www.astronomy.net . ...

... Under certain conditions, like those in the nucleus of a QSO, all atoms can be made to emit light at particular wavelengths. ... If that source is approaching the observer, the wave is squashed up onto itself making the wavelength shorter. ... This is redshift. ... You can see how the section of the QSO spectrum which we observe changes with redshift. ... We then see how far we had to slide the observed spectrum along the scale to make it match and that is the objects redshift. ... The 2QZ team . ...

... The Advanced X-ray Astrophysics Facility's (AXAF) High and Low energy transmission gratings (HETG, LETG) data require new tools and data structures to support x-ray dispersive spectroscopy. ... The sky coordinates, which are referenced to the telescope mirror node and therefore independent of the grating reference node, are only useful for the imaging of zero order and the filtering of grating arm photons. ... For more details on the AXAF grating flight processing software, see: . ...

... 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 . ...

... RC0133+0459 . ... RC0154+0459 . ... Radio source parameters . R.A.(J2000) Dec.( J2000) R.A.(B1950) Dec.( B1950) Freq. Comp. ... MHz] size["] flux[mJy] ["] index 01:54:47.65 +04:59:23.9 01:52:11.19 +04:44:42.1 1425.0 .6 84 - 1.01 . Parameters of optical candidates for identification . ... B1950) Magn. 01:54:47.65 +04:59:23.7 01:52:11.18 +04:44:42.0 22.6 . Cross marks radio source ps . Last updated 20 Dec 2000 ...

... Exposure Time Calculator (ETC) . ... ESO - Public Surveys . ... the recommended values to use for DIT, . ... Detector on-chip integration (DIT): seconds. to your chosen value - a separate page gives recommended values to use for DIT - for modes 1 and 2 below you may wish to start with the maximum recommended values as these will minimize the effect of read noise (a total object exposure of Y secs with DIT=X secs will produce Y/X lots of read noise) and give you a lower limit on the time needed. ...

. Parent Directory .description . os2arrow.zip . pibtst.zip . pmtermsr.lzh . proc.zip . rmfiles.zip

. Name . Last modified . Size . Description . Parent Directory . - . EmbedHTML.zip . 24-Jan-2006 13:24 . 72K . Telescope_C++.zip . 24-Jan-2006 13:25 . 44K . ValidatorSetup_0_9_6.exe . 24-Jan-2006 13:32 . 807K . ascomC++Sample.zip . 24-Jan-2006 13:25 . 124K . dotnetTelescopeNSerial.zip . 24-Jan-2006 13:24 . 6.3K . Apache/2.2.14 (Ubuntu) Server at vega.inp.nsk.su Port 80

For around forty years, astrophysicists have observed the annihilation of positrons in the Galaxy at a prodigious rate. ... The fact the Galactic bulge far outshines the disk in annihilating positrons which are injected into the ISM at low energies makes the source of the positrons difficult to identify, as the main source of such positrons are prima facie located in the Galactic disk. ...

... Анк а дня . ... Статьи . ... Новый научный журнал о Марсе . 18-12-2005 20:10 Элементы.ру . Начал выходить новый научный журнал The Mars Journal, полностью посвященный исследованиям Марса. Журнал издается по модели Open Source ? все публикуемые статьи свободно доступны в интернете.. Все ключевые слова . Картинка дня . ...

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 . ...

... S.P. KOROLEV ROCKET AND SPACE CORPORATION ENERGIA . ... OAO RSC "Energia" . ... Company's History . ... History . ... Determine possibilities to obtain on-line documented information during crew visual-instrument observations by using hand optical devices in a long-duration space flight from the Russian Segment of the International Space Station to assess ecological effects of the industrial activities on the territory of the RF and foreign countries. ... 2015 JSC "S.P. Korolev RSC "Energia" . ...

... Clubs . ... PUBLIC Telescopic observing is conducted at the Wheaton College Observatory every clear Friday (call for times) when college is in session. ... The College has a 12.5 " Newtonian/cassegrain telescope. ... For more information see the North Shore Amateur Astronomy Club page. ... For more information see the North Shore Amateur Astronomy Club page and the college's page . ... Aldrich Astronomical Society Paxton, MA . ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...

... One striking feature is a small source of almost pure H 2 line emission, which is located near one of the compact sources in Orion reported by O'Dell and collaborators (HST-18 = 203-504). ... H-H objects, Proplyds, Orion Bar, H 2 . ... We obtained a series of images across the bright rim of the Orion Bar near the peaks of mm-wave molecular line emission with NICMOS cameras 1-3 (NIC1, NIC2, NIC3) in several filters on 1998 February 18. ... The suggestion of an H-H object does not seem compelling. ...