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Top] [Prev] [Next] [Bottom] . The WF/PC-1 Investigation Definition Team (IDT) ( OV/SV Report , 1992) analyzed several different cases, based on specific pixel threshold levels; two of these are summarized in the short table below. Cosmic Ray Events by Threshold Level . ... 4.7 pixels/sec/CCD . 2.7 pixels . ... The event rate is estimated at about 1.7 events per second per CCD. As expected, long observations are most affected by cosmic ray events. ...

... Credit Copyright: Rick Scott Explanation: On August 13, 2002, while counting Perseid meteors under dark , early morning Arizona skies, Rick Scott set out to photograph their fleeting but fiery trails. ... Tracking the sky, his ten minute long exposure shows a field of many stars in our own Milky Way galaxy , most too faint to be seen by the unaided eye. ... Just above and left of center, well beyond the stars of the Milky Way, lies the island universe known as M31 or the Andromeda galaxy. ...

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2002 August 23 . Island Universe, Cosmic Sand . ... Flashing from lower left to upper right, the bright meteor would have been an easy eyeful though, as friction with Earth's atmosphere vaporized the hurtling grain of cosmic sand , a piece of dust from Comet Swift-Tuttle . ... About APOD | ...

... The high energy particles (mainly protons and alpha particles) found in the interplanetary space constitute what is called cosmic rays. ... galactic cosmic rays (GCR) originating far outside our solar system . ... anomalous cosmic rays" (ACR) originating from the interstellar space beyond the heliopause . ... The anomalous cosmic rays are most likely produced by neutral atoms in the interstellar space, which . ... The anomalous cosmic rays differ from others by their composition. ...

... Report on Cosmic Call 1999 . ... Cosmic Call Sessions . ... This Report outlines methodology, hard- and software, which were developed to transmit first public Interstellar messages from Evpatoria Deep Space Center (EDSC), and describes four Cosmic Call Sessions, which were fulfilled in EDSC on May 24 and June 30 - July 1, 1999. ... Each Cosmic Call consists of two parts. ... Dutil Message, . ... The software for gathering all messages and creating the Cosmic Call stream, was written on C language. ...

Neutron Monitors ] [ Solar Neutrons ] [ Muon Telescopes ] [ Base Potchefstroom University ] [ Magnetometers ] [ GPS systems ] [ Ionosphere ] [ Related Data ] [ Space Weather ] . ... All Cosmic Ray Stations + InterPlanetary Data: WorldNet . Alma-AtaB (Mt.Tien Shan) DataBase of Kazakhstan Spectrograph Alma-AtaB (Mt.Tien Shan) new . ... Nagoya Muon Telescope and DATA or mail . ... Belgrade Muon Telescopes and DATA or ">mail . ... Real-Time database for Cosmic Ray Anisotropy (DB10) . ...

... It is notoriously difficult to identify weak cosmic ray events in long exposure observations. ... The method is to compare the probability distribution function (PDF) of cosmic ray events between an observation and a dark frame matched in exposure time. We illustrate the basic idea using dark exposures from a Tek 1024 1024 CCD with varying exposure lengths and read-out times. ... Figure: Histogram of cosmic ray events in a two hour dark frame. ... Original PostScript figure (78 kB) . ...

Добро пожаловать, Гость . ... Вселенная, жизнь, разум (Модераторы: ivanij , AlexAV , Nucleosome ) ? Отправлено межзвездное радиопослание "Cosmic Call 2003" . ... Гость . ... 6 июля года из Евпаторийского центра дальней космической связи (ЕЦДКС) было отправлено очередное, уже четвертое по счету, межзвездное радиопослание 'Cosmic Call 2003' к пяти окрестным (расстояние от 33 до 46 световых лет) звездам солнечного типа из созвездий Андромеда, Большая Медведица, Кассиопея, Орион и Рак. ...

... Space in a Modern Society: Saturday 14 March 2009 . ... Entitled "Mars, the Cosmic Stepping Stone", it will be based on his excellent new book of that title, just recently published. Kevin is the representative of The Planetary Society in Ireland, and lectures in astronomy and Physics at ITT in Dublin. ... Tuesday, 3 March 2009 02:19 . International Year of Astronomy, Ireland National Node . ...

... ESO, the European Southern Observatory . ... ESO's Governing Bodies . ... Travel and Contacts . Travel to ESO Headquarters . ... Green ESO . ... Survey Telescopes . ... Star Clusters . ... Stars@ESO . ... View shopping cart . ... ESO 3.6-metre telescope . ... MPG/ESO 2.2-metre telescope . ... ESO 1-metre Schmidt telescope . ... VST . ... The glowing jumble of gas clouds visible in new image make up a huge stellar nursery nicknamed the Prawn Nebula. ... Milky Way : Nebula : Type : Star Formation . ...

... The aim of this workshop is to get together theorists, who develop models leading to such cosmic polarization rotation (CPR), and experimentalists, who search for CPR using a variety of complementary methods, in order to discuss current results and future directions. The workshop will take place at the Villa Il Gioiello on the Arcetri hill near Florence, where Galileo, the first scientists to test the equivalence principle, spent the last 10 years of his life. ... Home . ... cpr@arcetri.astro.it . ...

Astronotes Armagh Planetarium's Stellar Blog! ... Armagh Planetarium . ... Image credit: Armagh Planetarium) . ... Working in conjunction with Armagh Planetarium and the Irish Astronomical Association this celestial extravaganza will be an event not to be missed by stargazers and anyone interested in learning more about the Cosmos. ... Cosmic Cuilcagh will help us all to appreciate our significance in the wider Universe and how the world around us has been affected by cosmic activityтАЭ. ...

NEUTRON MONITOR DATA FOR JUNGFRAUJOCH AND BERN DURING THE GROUND-LEVEL SOLAR COSMIC-RAY EVENT ON 28 October 2003 R. Buetikofer and E.O. Flueckiger Physikalisches Institut, Universitaet Bern Sidlerstrasse 5, CH-3012 Bern , Switzerland This report includes information on the processing and use of the data for the ground-level solar cosmic ray event on 28 October 2003 obtained by the following three ... Section 3 of the IGY neutron monitor at Jungfraujoch is the central section. ...

... If two or more spectra have been taken under the same conditions, a very efficient way of removing particle hits from the raw data is to replace pixel values with large deviations from other observations with a local estimator, as done in the command COMBINE/LONG . If multiple images are not available, cosmic ray hits have to be filtered out by a different method. ... where subframe defines the region to filter. ... This step is done twice to remove the hits on the sky on each side of the object. ...

Next: Extinction properties (transmitted radiation) . ... The notes in their current form concern only 2 but main for astronimy aspects of the optical properties of cosmic dust - the ability to extinct and polarize transmitted radiation. The corresponding obervational effects the extinction and polarization (not due to scattering) plaied and plays till now the primary role in astrophysical effects of cosmic dust considered in the literature. ... Extinction properties (transmitted radiation) . ...

home education > family astro . ... The Cosmic Decoders Leader Kit is the fourth release in our series of family events and activities on topics in astronomy for Family ASTRO Event Leaders . ... Follow one or more of the links below for more information on the type of ?cosmic decoding? you?re looking to do ( note that Frequently Asked Questions about Cosmic Decoders can also be found by clicking on these links ): . ... Click here to be taken directly to the AstroShop's Family ASTRO page . ...

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Next: Supernova Explosions Up: No Title Previous: X-ray Luminosity Evolution . The origin of cosmic rays (CR) (especially of very high energies, >  eV) until now has been one of the unsolved problems in modern astrophysics. It is unclear as yet whether one universal mechanism of relativistic particle formation in our Galaxy operates or not, and if there are several different mechanisms, what is their relative contribution to CR formation. ... compact X-ray stars in binary systems. ...

... Astrophysics Group . ... Exploring the Cosmic Dawn . ... Cosmic reionization corresponds to the epoch in which the first stars€а and black holes reionize the neutral intergalactic medium (IGM) that€аpervades the Universe following recombination, within a few hundred€аmillion years of the Big Bang. The epoch of reionization, and the€аpreceding ?dark ages? prior to the formation of the first stars,€аrepresent the last unexplored phases of cosmic evolution to be tested€аand explored. ...