Section I: Introduction to ALFA and GALFA . Section II: System Description . ... ALFA receives 7 beams, 2 polarizations per beam, each covering 1225-1525 MHz. The 14 IF signals cover nominally the 100 to 400 MHz band. ... A high-resolution, low-bandwidth spectrometer (8K channels covering a 7 MHz bandwidth) . ... Each spectrometer board handles two polarizations from one telescope beam.The baseband signals are to be digitized by four 8-bit ADCs at 100 Msamples/sec. ... Bandwidth: . ...

In this gallery are many images of Low Surface Brightness Galaxies which have recently been discovered and analyzed. ... The central surface brightness of this galaxy is 24.28 . Malin 2 This galaxy is another huge disk galaxy with a scale length of 15 kpc and a redshift of 15000 km/a. The high surface brightness knot in one of its spiral arms actually has the same color, luminosity and H-alpha equivalent width as the entire Large Magellanic Cloud . ... Truly it is a Low Surface Brightness Galaxy. ...

... Chapter 14. ... Data consist of numbers, of course. ... In the following sections, you will repeatedly encounter the following paradigm: § apply some formula to the data to compute a statistic § compute where the value of that statistic falls in a probability distribution that is computed on the basis of some null hypothesis § if it falls in a very unlikely spot, way out on a tail of the distribution , conclude that the null hypothesis is false for your ... 603 604 Chapter 14. ...

makeprfcorr -- Compute the pixel response function for an image created with asncombine makeprfcorr association . association . ... Interactive program to compute relative shifts of images in an association file. ... After computing the relative shifts of the direct images, alignasn searches for corresponding grism images for each of the direct images. ... The grism association is then updated with the same relative shift measurements as determined from the direct images. ...

... The Network Time Protocol (NTP) is used to synchronize the time of a computer client or server to another server or reference time source, such as a radio or satellite receiver or modem. ... Information on the NTP architecture, protocol and algorithms can be found in the Further Information and Bibliography page. The Building and Installing the Distribution page presents an overview of the procedures for compiling the distribution and installing it on a typical client or server. ...

... In this case the F5-F9 dwarfs turn out to be more metal-rich (by 0.1 in [Fe/H] ) thab G and K dwarfs, and the metallicity of the Hyades cluster turns out to be larger than the solar one [Fe/H] Hyades =+0.1 . ... При этом карлики F5-F9 оказываются богаче металлами, чем более поздние звезды, примерно на 0.1 по [Fe/H] , и металличность звезд Гиад относительно Солнца равна [Fe/H] Hyades =+0.1 . ...

The most recent kpyymm.tab (yymm stands for year and month, each expressed with two digits) files are distributed per e-mail half-monthly by Dr. H.-J. Linthe, mailto:kp_index@gfz-potsdam.de Both recent and past tables are supplied as an archive on the FTP servers . ... Since many observatories are interested mainly in the international quietest and most disturbed days, beginning August 1996 three extra lines have been added to the end of the table containing these values in an easy to read form. ...

... Главная страница / Кометы и астероиды / "Нас не догонишь". Комета 217P/LINEAR, M42, M43, Бегущий Человек и пролетающие спутники. ... M42 , M43 , БегущийЧеловек , 217P/LINEAR . ... Комета C/2009 R1 (McNaught) . ... Все права на размещенные в галерее фотографии принадлежат их авторам. ... Киевский клуб любителей астрономии "Астрополис" . Движок галереи: 4images 1.7 ...

. This section gives a detailed description of how the command works. For some commands this section consists of a few lines; for others it can be several pages long.

... spectrum . ... The photons we detect originate in the outermost layers, or atmosphere, of the star. In order to interpret stellar spectra, it is necessary to construct models which accurately represent the structure of a stellar atmosphere and the transfer of radiation from the stellar interior into interstellar space. For the study of helium stars and other stellar remnants, we in Armagh use several computer programs, of which sterne and spectrum are the most important. sterne . ...

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ACCURACY ASSESSMENT OF THE ERP PREDICTION METHOD BASED ON ANALYSIS OF 100-YEAR ERP SERIES Z.M. MALKIN1 , V.M. TISSEN2 1 Pulkovo Observatory, St. Petersburg, Russia e-mail: malkin@gao.spb.ru 2 Siberian Scientific Research Institute of Metrology (SNIIM), Novosibirsk, Russia e-mail: tissen@mail.ksn.ru ABSTRACT. ... CONCLUSIONS The method of ERP prediction developed at SNIIM has been tested by comparison with the USNO results using 671 UT1 predictions for 2006­2011 and 423 PM predictions for 2009­2011. ...

Multi-Frequency Synthesis in K-band . The Multi-Frequency Synthesis (MFS) permits to realize a good quality imaging of the continuum radio sources in short time. ... The RadioAstron mission will operate one K-band circular polarized channel at fixed frequency 22,232 GHz. ... In general one K-band RadioAstron channel with fixed frequency will be unchanging and compatible with all the ground radio telescopes. ... Progress of the RadioAstron Project in Pictures . ...

NAME htpasswd - Create and update user authentication files SYNOPSIS htpasswd [ - c ] [ - m | ... p ] passwdfile username password htpasswd - n [ - m | ... p ] username password DESCRIPTION htpasswd is used to create and update the flat-files used to store usernames and password for basic authentication of HTTP users. ... Resources available from the httpd Apache web server can be restricted to just the users listed in the files created by htpasswd. ... The user is prompted for the password. ...

MATHEMATICAL MODELING: . ... This model is developed on the base of the probabilistic description of the collisional aeronomical processes and is realized on a computer as the numerical system (stochastic model). ... Shematovich, V.I., Bisikalo , D.V.             Nonequilibrium processes in the planetary and cometary atmospheres. ... In Russian) . ... Piarnpuu , A. A.; and Shematovich, V. I.       Construction of structural stochastic models of collision processes in rarefied gas media (abstract) . ...

Astronomy Discussion Forums . Forums: . Atm ћ Astrophotography ћ Blackholes ћ Blackholes2 ћ CCD ћ Celestron ћ Domes ћ Education . ... Discussion Forums . ... Your Description Is To Vague. Forum List | ... Post Message | ... www.astronomy.net . ... Unless otherwise specified, web site content Copyright 1994-2016 John Huggins All Rights Reserved . Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

About us . ... Telescopes . ... Apart from the 6-meter telescope BTA two small telescopes are operative at SAO: the 1-m and 0.6-m telescopes, both manufactured by Carl Zeiss, Jena, are located near the BTA. ... These telescopes are used for adjusting the equipment and techniques of observations used at the BTA. ... The observational time allocation and also a brief description of the equipment of the 1-m telescope, which is used either permanently or mainly on this telescope, are presented below. ...

Chair of solid state physics . ... The Physics of Phonons . ... In the first part of the course “The Physics of Phonons” the dynamics of atoms in one- and three- dimensional crystalline lattices is considered in detail. The quasiparticle conception in solids, taking phonons as an example, is discussed; creation and annihilation operators of phonons, main properties of acoustic and optical phonons dispersion laws, density of phonon states. ... Crystalline state. ... Acoustic and optical phonons. ...

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. ...

Альтернативный форум . Scientific.ru Все форумы . ... Chernov V.M. Non-Archimedian Normalized Fields and Аlgorithms for Two-Dimensional Discrete Fourier Transform. Pattern Reсogn. and Image Analysis.- ... Чернов В. М. О точности вычисления дискретной круговой свертки в нормированных полях. ... Чернов В.М. О дискретном "метапреобразовании" в кольце аделей глобального поля. ... Chernov V.M.,Shabashev A.V. Non-Archimedian normalized fields in texture analysis tasks. ... V.M.Chernov. ...