Next: Using a Java Web-based Graphical User Interface to access the SOHO Data Archive . ... A major problem with designing archives in astronomy is defining the data resolution. ... Expert users can create User Defined Functions (UDFs) that extract virtual attributes from files external to the database engine. ... Therefore, for the ISO Post Mission Archive, the concept of virtual data resolution with user defined functions has been designed and implemented as a novel database paradigm. ...

Next: Acknowledgements Up: Old neutron star distribution Previous: Discussion . Using ergodicity hypothesis, we show that the old neutron star population in the Galaxy under reasonable suggestions about initial space and velocity distributions of young pulsars can fill a thorus-like region extended up to several tens kiloparsecs above the galactic plane. ... The obtained distribution is undergone by the isotropy and homogeneity tests appropriate to gamma-bursts problem. ...

Field centres for 6dF/FLAIR observations of the 6QZ survey. # 6dF fields have radius 2.844 deg. and were defined in the # J2000 system. FLAIR fields are square and are 5x5 deg # centred on UKST survey positions and defined in the B1950 # system. # 6dF : coordinates ( B1950 ) coordinates ( J2000 ) # Field hh mm ss.ss dd mm ss.s hh mm ss.ss dd mm ss.s sgp001 21 51 31.25 -30 11 45.4 21 54 25.40 -29 57 33.0 sgp002 22 10 08.35 -29 50 17.3 22 12 59.50 -29 35 25.0 sgp003 22 30 24.34 ...

Lord Carrington determined the solar rotation rate by watching low-latitude sunspots back in the 1850s. He defined a fixed solar coordinate system that rotates in a sidereal frame every 25.38 days. ... Carrington coordinates are heliographic and measured in latitude and longitude in that rotating frame. Carrington Time is the rotation and longitude of the point on the Sun that is at the sub-terrestrial point. ... Bartels defined his calendar based on observations of daily geomagnetic activity. ...

... Coordinate system . It is necessary to specify the coordinate system for the drilling of plug-plates so that the drilling file (currently named plPlugMap), plate drilling, cartridge, rotator wrap and the rotator itself are compatible. ... The TCC rotator angle (object system) is defined to be 0 degrees for this orientation. ... Thus, the rotator angle gives the conventional astronomical position angle on the sky of the y axis (although Russell won't acknowledge this necessarily). ...

Q: Are the magnitudes in the ETCs AB or Vega magnitudes? ... Q: How is the signal to noise defined? A: In optical and infrared imaging, the applications display a signal to noise over the PSF area, which is computed in a circle of radius seeing/plate_scale. ... In optical imaging only, a second signal to noise is computed which is the signal to noise at the central pixel. ... A: The template spectra stored in the database are measured or simulated spectra covering different wavelength range. ...

SIMPLE = T / file does conform to FITS standard BITPIX = 8 / number of bits per data pixel NAXIS = 0 / number of data axes EXTEND = T / FITS dataset may contain extensions COMMENT FITS (Flexible Image Transport System) format is defined in 'AstronomyCOMMENT and Astrophysics', volume 376, page 359; bibcode: 2001A .. ... IMAGEW = 4256 / image width IMAGEH = 2832 / image height ANRUN = T / Solve this field! ...

. The International Astronomy Olympiad .

O. Yakimova Mathematisches Institut, UniversitЁ zu KЁ at oln KЁ Germany oln, yakimova@mpim-bonn.mpg.de On symmetric invariants of Z2 -degenerations The author is supported by the RFFR Grant 05-01-00988. ... Set g = Lie G and let r denote the rank of this Lie algebra. ... x) qx for all x V } q over the field K(V ), which is a Lie algebra of rational sections for the bundle = {y , qy } V в q. We need a more precise description (and the existence proof ) of this Lie algebra. ... ns Lemma 1. ...

... sin f = y / r . cos f = x / r . ... They are now viewed as new definitions of the sine and cosine, for the polar angle f given by x and y ( a slightly different way of formulating this definition is described further below ). ... sin 2 f + cos 2 f = 1 . ... Angle . ... Many trigonometry texts define the sine and cosine slightly differently, using the so-called unit circle . ... Then the distance AB ("the sine line") equals sin a , and the distance OA ("the cosine line") equals cos a . ...

On optical characteristics of non-spherical scatterers . ... Usually one assumes that the radiation from a very distant source is incident on a scatterer and then this radiation can be represented by a plane wave . ... Amplitude matrix . ... The elements of the amplitude matrix on the directions of propagation of the incident and scattered radiations, the size, morphology and chemical composition of the scatterer as well as its orientation in the laboratory system. ... Scattering matrix . ...

... Астрономия для всех (Модераторы: Deimos , AAV ) ? Нулевой меридиан . ... Сообщений: 164 . ... Скажите пожалуйста, как определяется нулевой меридиан для Луны, планет (в особенности, Марса) и их спутников? ... Записан . ... Они выбрали маленький круг (кратер) как точка справки когда они произвесли первую систематическую карту черт Марса в 1830-32 г. Нулевой меридиан Луны находится прямо в середине стороне Луны видна с Земли. ... Вот, нашел немножко на http://en.wikipedia.org/wiki/Prime_meridian . ...

. Добро пожаловать на страницу . АСТРОНОМИЧЕСКОГО ОТДЕЛЕНИЯ . ФИЗИЧЕСКОГО ФАКУЛЬТЕТА . МГУ им.М.В.Ломоносова! . Новости . Расписание . Спецкурсы . Информация . Кафедры . Студенты и аспиранты . История . Контакты . Формирование системы инновационного образования в МГУ им. М.В. Ломоносова . Fatal error : Call to undefined function: nminnovation() in /resurs/www/ao/depart/ind.php on line 50 .

... Bad Astronomy . ... I think I will break from my usual format of Bad Astronomy/ Good Astronomy by saying that the way we define seasons currently is not strictly bad, but I feel (in my opinion!) that it could be better. The definition of when the seasons begin is at the moment of solstice or equinox; that is, winter (in the north) starts on December 22 nd and summer starts on June 22 nd . ... Now imagine breaking up the Sun's 46 degree up-and-down yearly swing into 1 day intervals. ...

... The VSOP Survey Continuum Source List . The radio sample for the VSOP continuum survey was defined to include all extragalactic radio sources with: . a total flux density at 5 GHz, S>=1.0 Jy . ... The sample also included all sources in the sky with a 5 GHz flux density S>5 Jy, regardless of spectral index and galactic latitude. ... The source would then be included in the VSOP sample (three of the sources were found with a flux density above 1 Jy and added to the sample). ...

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... S.P. KOROLEV ROCKET AND SPACE CORPORATION ENERGIA . ... OAO RSC "Energia" . ... Brief History of Rocket and Space Technology . ... Experiments and Researches from 2013 . Experiments and Researches (2000-2013) . Rocket Space Complexes . ... Images . ... Automatic Space Systems . Universal Space Platform . ... Crew 43/44 . ... Experiments Program . ISS-43 Images . ... Sixteenth Russian Visiting Crew . ... Support of the Station functionality; . ... 2015 JSC "S.P. Korolev RSC "Energia" . ...

Hourly values of parameter foF2 (F2 layer critical frequency) The description of letters in the tables of parameter foF2 A blanketing. ... C non-ionospheric (equipment). D above upper frequency range of equipment. E below lower frequency range of equipment. F frequency spread. ... K particle E layer. L no sufficiently defined cusp between F layers. ... N superimposed layers. O measurement refers to o component. ... Q range spread. R attenuation near critical frequency. ...

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... Polarizer efficiency is defined as , where and are the respective measured signals for a polarizer oriented parallel and perpendicular to the axis of a fully polarized beam... angle 12.2 . Polarizer position angle as measured from the NICMOS Aperture Offset Angle of , about the aperture center toward the +U3 axis.. IDL 14.1 . IDL (Interactive Data Language) is an interactive analysis and visualization program written by Research Systems, Inc.... resolution. ...