Next: Regularization of Van Up: Deconvolution Previous: Tikhonov's regularization and . If we use an iterative deconvolution algorithm, such as Van Cittert's or Lucy's one, we define , the error at iteration n : . ... The wavelet coefficients provide a mechanism to extract from the residuals at each iteration only the significant structures. ... is the standard deviation of the noise at scale j , and is a function which is defined by: . ... Regularization of Van Cittert's algorithm . ...

... V.V.Shevchenko, Sternberg State Astronomical Institute, Moscow University, Universitetsky 13, Moscow 119899, Russia, shev@sai.msu.ru . ... 1.Sternberg State Astronomical Institute, 119899, Moscow, Russia. shev@sai.msu.ru . ... V.V.Shevchenko, Sternberg State Astronomical Institute, Moscow University, Moscow 119992, Russia, shev@sai.msu.ru . ... 119992 Moscow, Russia; . ... 2Sternberg Astronomical Institute, Moscow University, Moscow, 119992, Russia, . ... Moscow, 119992, Russia shev@sai.msu.ru . ...

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. February 7, 1998 . COBE Hotspots: The Oldest Structures Known . ... After computer processing to remove contributions from nearby objects and the effects of the earth's motion , the map shows temperature variations in the early Universe as red "spots". These spots are the oldest, most distant structures known. ... About APOD > . ...

... We describe a parallel code for 3-D structure detection and morphological analysis. The method is based on a multiscale technique, the wavelet transform and on segmentation analysis. ... This paper presents a new parallel code, that allows a rapid structure detection and morphological analysis in a 3-D set of data points. ... Segmentation analysis. ... Our code is based on the programming paradigm MASTER/SLAVE . ... Finally, the morphological analysis is executed by the master. ...

... Gallery . ... Sidebar Left . Sidebar Top . No Sidebar . Sidebar Bottom . Sidebar Right . ... Title: Main telescope structure . Description: Cassegrain spectrograph is gone, counterweight bay open, catwalk gone . ... Main telescope structure Cassegrain spectrograph is gone, counterweight bay open, catwalk gone . Powered by Gallery 3.0.9 (Chartres) . ...

Next: INCHWORM file structure Up: Appendices Previous: CHAMELEON file structure Contents . The HDS file format of raw data is described here. SESSION SESSION DATE _ CHAR *10 SYSTEMID _ CHAR *4 FORMAT _ CHAR *11 GENCONFIG INSTRCOHINT _ DOUBLE BEAMCOMBINERID _ INTEGER REFSTATION _ INTEGER INPUTBEAM TABLE NUMSID _ INTEGER STATIONID [ 3] _ CHAR *16 SIDEROSTATID [ 3] _ INTEGER DELAYLINEID [ 3] _ INTEGER BCINPUTID [ 3] _ INTEGER STARTRACKERID [ 3] _ ...

... S.P. KOROLEV ROCKET AND SPACE CORPORATION ENERGIA . Corporation . OAO RSC "Energia" . ... Development of Organizational Structure . Company's History . ... Brief History of Rocket and Space Technology . ... Flights Chronology . ... ISS Russian Segment . ... Rocket Space Complexes . ... Development of organizational structure . Contribution of RSC Energia to the Russian Rocket-Space Technology . ... RSC Energia: Progress MS-02 docked with the ISS.' ... ROCKET SPACE COMPLEXES . ...

... Structure of Data . ... Catalog . ... Catalog: 206 clusters 32 clusters: known before 12 clusters: parameters from BVRI photometry @ SAO 1-m 0 clusters: parameters from UBVRI photometry @ Maidanak 1.5-m 26 clusters: parameters from 2MASS 168 clusters: new (2MASS) 142 clusters: parameters from 2MASS 26 clusters: embedded 0 clusters: parameters from BVRI photometry @ SAO 1-m 3 clusters: parameters from UBVI photometry @ ARIES 1.04-m 0 clusters: parameters from UBVRI photometry @ Maidanak 1.5-m . ...

. The UNIX file system is organised as a hierarchy of directories starting from a single directory called root which is represented by a / (slash). Imagine it as being similar to the root system of a plant or as an inverted tree structure. Immediately below the root directory are several system directories that contain information required by the operating system. The file holding the UNIX kernel is also here. UNIX system directories . Home directory . Pathnames .

Университет . ... Наука Патенты Topological types of crystal structures . ... Самарский государственный аэрокосмический университет имени академика С.П. Королева . национальный исследовательский университет)" . ... Тел.: 846) 335-18-26 Факс: (846) 335-18-36 . Содержание Интернет-портала СГАУ: . тел. +7 (846) 267-45-60, . e-mail: webmaster@ssau.ru . ... Тел.: (846) 267-44-99 . e-mail: pr@ssau.ru . ... e-mail: tech@ssau.ru . ... СГАУ 2016 http://ssau.ru | http://сгау.рф | ...

... Ciel Espace, le magazine qui vous guide toujours plus loin . ... Ciel Espace, nouvelle formule, c'est . ... des pages consacr†йes †а la publication de vos photos Mais c'est aussi une vraie communaut†й avec laquelle partager votre passion et nourrir votre curiosit†й. Accueil DтАЩ†йtranges structures rocheuses sur Mars . ... Pour en savoir plus sur les explorations men†йes par Opportunity, †йcoutez le podcast Opportunity, †зa roule sur Mars , avec Fran†зois Forget, surle site cieletespaceradio.fr . ...

. Head of the project: A.F.Kholtygin

... Files with sunspot magnetic fields data ============================================== Column Format Description ______________________________________________ 1-2 I2 Day of month 3-4 I2 Month (numerical) 5-8 I4 Year 9 A1 Blank 10-13 I4 UT in hhmm 14 A1 Blank 15-19 A5 Sc - atmospheric flutter in arc sec 20 A1 Blank 21-25 A5 S - quality of the Sun image 26-27 A2 Blank 28-31 A4 Number of sunspots (numbering from unit every day ) 32 A1 ...

. Composition | Objectives | Capabilities and samples | Request for work | Back to main page . If you have any questions, please contact us: rp@iszf.irk.ru . http://esceir.iszf.irk.ru/lchmen/ris1en.htm . Last modification: 2.06.01.

... Solar Wind . ... During a total eclipse of the Sun, when for a few minutes the Moon completely covers the Sun's face, a glow appears around the darkened Sun--the solar corona, the Sun's outermost atmosphere. ... Such high levels of ionization require the atoms to be buffeted around by extremely high temperatures, around 1,000,000 C (1,800,000 F). ... It is brightest near sunspots, whose arched field lines apparently hamper the outflow of solar wind which carries away energy and helps cool the corona...

Domes Forum Message . Forums: . Atm ћ Astrophotography ћ Blackholes ћ Blackholes2 ћ CCD ћ Celestron ћ Domes ћ Education . ... Domes and Observatories Discussion | ... Two Story Dome Structure In Progress . ... I am in the middle of planning a two story building with a metal dome on top to get better horizon to horizon viewing. ... www.astronomy.net . ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

This colorful display shows tiny differences (or "anisotropies") in the Cosmic Microwave Background (CMB) over the entire sky. The average temperature is just 2.73 kelvins (2.73 degrees Celsius above absolute zero), and the temperature differences span mere millionths of a degree. ... Until now, part of the Milky Way's motion inferred from the variation in the CMB was unexplained. Astronomers have discovered that the Milky Way and neighboring galaxies are being pushed from the Local Void. ...

... Наблюдаемые распределения звезд разного возраста и металличности по Z -координате относитеьно Солна: а - молодые ( t 3 млрд. лет) металличные ( [Fe/H] -0.13 ) звезды, б - молодые малометалличные ( [Fe/H]<-0.13 ) звезды, в - старые ( 3 млрд. лет) металличные звезды, г - старые малометалличные звезды. ...

... We publish 16 Doppler imaging temperature maps for the years 1994-2002 of the active RS CVn star II Peg. ... Through Doppler imaging we want to study the spot evolution of the star and in particular compare this with previous results showing a cyclic spot behaviour and persistent active longitudes. ... The derived temperature maps are quite similar to the ones obtained earlier with a different methods, the main differences occurring in the spot latitudes and relative strength of the spot structures....

Databases (NSDC) of the Natural Planetary Satellites. ... NSDC: Database of astrometric observations of Natural Planetary Satellites . ... They are thoroughly looking for observations in different sources, creating their owndatabases which are then mostly inaccessible to other researchers. ... In the file "content" with explications, the reference is given to the data source as well as the bibliographic reference. ... Data sources. ... Why a specific bibliographic database for Natural satellites? ...