FOS FLATS FROM SUPER SPECTRA D. Lindler, R. Bohlin, G. Hartig, and C. Keyes FOS Instrument Science Report CAL/FOS-088 March 29, 1993 ABSTRACT: A new algorithm for computing the FOS detector non-uniformities (flat field response) uses spectra of stars taken in 9 different positions in the 4.3 arcsec aperture. ... Future flat field data should be collected with a newly recommended set of locations of the star in the FOS 4.3 arcsec aperture. ...

... Alexander V. Stepanov, . Dr. Sci. stepanov@gao.spb.ru . Vice-Directors on Science . Yury N. Gnedin, . Dr. Sci. gnedin@gao.spb.ru . ... Cand. Sci. kanaev@gao.spb.ru . ... Dr. Sci. eroshkin@gao.spb.ru . Advisor of the Russian Academy of Sciences . Victor K. Abalakin, . ... Science Secretary . Yury A. Nagovitsyn, . ... Sci. nag@gao.spb.ru . ... Sci. km@gao.spb.ru . Press Secretary . ... Sci. smi@gao.spb.ru . ...

On 31 May 2003 the initial Australian SKA-siting proposal and the two updated Australian SKA-concept proposal whitepapers were submitted to the International SKA Steering Committee (ISSC). ... The updated SKA-concept proposal whitepapers respond to both scientific and technical questions posed by the ISSC on the Luneberg Lens and Cylindrical Reflector Australian SKA concepts. ... Exciting results have been obtained with new dielectric material being produced for the prototype Luneberg Lens. ...

... Galaxies with polar rings (PRGs) are a unique class of extragalactic objects, consisting of a ring or disk of gas, stars and dust orbiting in a plane nearly perpendicular to the disk of a central galaxy. ... At present, there are only about two dozen kinematically confirmed galaxies in this PRG class, mostly from the Whitmore et al. (1990) catalogue, based on photographic images. ... Examples of object from our catalogue SPRC (=SDSS-based Polar Ring Catalogue). ...

... subroutine attid1 (ts,u1,u2, dir ) common /z/ z(2) common /c/ x(12) dimension s(3),e(3),p2(3), dir (3), dra (3),pa(3,3) ux= atan (1.)/45.*u1 uy= atan (1.)/45.*u2 dra (1)= cos (ux) dra (2)= sin (ux)* cos (uy) dra (3)= sin (ux)* sin (uy) alf=x(1)+x(2)* sin (x(11)*ts)+x(3)* cos (x(11)*ts)+x(4)* sin (x(12)*ts)+ *x(5)* cos (x(12)*ts) bet=x(6)+x(7)* sin (x(11)*ts)+x(8)* cos (x(11)*ts)+x(9)* ...

... This function can also be used for particular types of subtypes or kinds: KIND (0) integer KIND (0.0) floating point number KIND (.FALSE.) logical variable KIND ("A") string of characters There is an intrinsic function SELECTED_REAL_KIND , which returns the kind of the type REAL that has a representation with (at least) the precision and the exponential range requested. ... With the choice SELECTED_INT_KIND (5) all integers between (but not including the limits) -100 000 and +100 000 are permitted. ...

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... First three columns show base-difference images of the evolution of the wave in 3 EUV channels (211 , 193 , 171 ) of AIA in which the wave is clearly visible. ... From our study we have quantitatively confirmed previous results that during wave passage the plasma visible in the Atmospheric Imaging Assembly (AIA) 171 channel is getting heated to higher temperatures corresponding to AIA 193 and 211 channels. ...

... This task takes an OM OSW source list, with source positions in pixels, and converts to sky coordinates. These sky coordinates are then used to produce a sky coordinate image. The task requires the user to enter the name of an OSW source list and its corresponding OSW image. ... The tangent plane coordinates are then converted to sky coordinates. ... The algorithm sets up a grid of offsets in the x and y directions to be used to match up stars in the source list to those in the catalogue. ...

. After collecting data for 3 years, the WMAP team has produced a new, more detailed picture of the infant universe. The white bars show the new data: the polarization direction of light in the cosmic microwave background. The colors indicate minute temperature differences in the CMB; red corresponds to warmer temperatures, and blue corresponds to cooler temperatures. NASA/WMAP Science Team

... The uniform flux density in each pattern is 100 units per pixel. ... In order to illustrate the case of a point spread function which in one dimension is extremely undersampled, a delta function is also included (the lower left hand pattern in BARS). ... The coordinates of the left hand pixel of the delta function are again (42,52), and the other patterns have lower left hand pixels distant by 10, 20 and 34 pixel units. ... Uniform flux density of 100 units/pixel is used. ...

TUI supports the following offsets: . Object Arc offset by a given amount on the sky (i.e. along the arc of a great circle). ... Arc offsets are useful for moving a different portion of your object or a different nearby object onto the boresight . ... Object Arc XY this is identical to an Object offset except that it has been rotated to align along the instrument x-y axes. ... This is just like the Calibration XY offset, except that it is typically cleared when you slew to a new object. ...

... Matrix of Transformation | ... Every set of attitude coefficients (corresponding to a line in attitude data file) is valid for its own time interval and gives the possibility to get a matrix N of tranformation from the GSE coordinate system to the S/C coordinate system as well as a matrix M of tranformation from the S/C coordinate system to the GSE coordinate system. ... and the matrix M of transformation from the S/C to the GSE systems (the direction cosines matrix) is: . ... V GSE = M * V S/C . ...

... Matrices and their invariants, such as order, rank, determinant, play an outstanding role in mathematics. ... To be a little more precise, nonzero square matrices of order $r+1$ (modulo multiplication by a nonzero constant) are represnted by points of the projective space $\Bbb P^{(r+1)^2-1}$. Geometrically, we consider the subvariety of matrices of rank one which is just the Segre variety $S=\Bbb P^r\times\Bbb P^r\subset\Bbb P^{(r+1)^2-1}$. ...

Next: Identification and Analysis of Binary Star Systems using Probability Theory . ... We present a computing code for modelling energy flux distributions, photometric indices and spectral line profiles of (non-)radially pulsating Main-Sequence stars. ... In the case of slowly rotating stars one can use the zero-rotation approximation to describe stellar pulsations. Such a model was used already by Cugier, Dziembowski & Pamyatnykh (1994) to study nonadiabatic observables of Cephei stars. ...

Among the fundamental characteristics of a material/medium such as chemical composition, density, conductivity, viscosity, one should probably give the first place to the optical constants - the refractive index and the extinction coefficient . ... The parameter i in Eq.(1) describes the optical properties of the medium where radiation propagates. ... The optical constants and allow one to estimate not only transmittance and absorption of radiation, but also its reflection at the border of two media. ...

Package . Class . ... This API (Application Programming Interface) document has pages corresponding to the items in the navigation bar, described as follows. Each package has a page that contains a list of its classes and interfaces, with a summary for each. ... Each of these pages has three sections consisting of a class/interface description, summary tables, and detailed member descriptions: . ... These links take you to the next or previous class, interface, package, or related page. ...

... This API (Application Programming Interface) document has pages corresponding to the items in the navigation bar, described as follows. The Overview page is the front page of this API document and provides a list of all packages with a summary for each. ... Each package has a page that contains a list of its classes and interfaces, with a summary for each. ... Each of these pages has three sections consisting of a class/interface description, summary tables, and detailed member descriptions: . ...

There are two azimuth encoders. ... The first plots show the encoder difference versus azimuth (.ps) ( .pdf) : . Top plot: The encoder difference (in encoder units) versus azimuth angle. ... Bottom plot: the same plot with the vertical scale in degrees rather than encoder counts (there are about 6935 encoder counts in a degree). There is a positive going bump in the encoder difference at az=160 degrees and a corresponding negative going bump 180 degrees away. ...

... Russian Academy of Sciences, . Sibirian Department, Yakutsk Scientific Center . Directors: Germogen F. Krymsky, Director, corresponding member of Russian Academy of Sciences . Evgeny G. Berezhko, Deputy Director . ... The main scientific directions are physics and astrophysics of cosmic rays, physics of solar-terrestrial interactions, investigations of interplanetary and near-the-Earth space, physical processes in magnetosphere and ionosfhere of the Earth. ...

Colorful Moon Mosaic . ... Credit Copyright: Noel Carboni Explanation: No single exposure can easily capture faint stars along with the subtle colors of the Moon. ... The fascinating color differences along the lunar surface are real, though highly exaggerated, corresponding to regions with different chemical compositions . And while these color differences are not visible to the eye even with a telescope, moon watchers can still see a dramatic lunar presentation tonight. ...