... Previous: Implementation Design of the ASC Data Model . ... We describe a coordinate library for AXAF data analysis. The library handles transformations between celestial coordinates and instrumental (mirror, focal plane, detector pixel) coordinate systems. ... Pixlib library is intended to perform AXAF Science Center (ASC) coordinate system data analysis. ... At the present, the library affords more than 50 transformations among ~20 ASC coordinate systems. ... is zero matrix and I unit matrix. ...

... DataљStructures . ... WCSLIB data structures . The WCSLIB routines are based on data structures specific to them: wcsprm for the wcs.h ,c routines, celprm for cel.h ,c, and likewise spcprm, linprm, prjprm and tabprm, with struct definitions contained in the corresponding header files: wcs.h , cel.h , etc. ... In particular, wcsset() analyses the FITS WCS keyvalues provided, fills the required values in the lower-level structs contained in wcsprm, and invokes the setup routine for each of them. ...

... A structure definition is provided: . type, public :: EllipseT real(single) ::& xAmp,& yAmp,& phase,& ! ... eg 'pixels', 'detxy', 'tanxy' logical(bool) :: isCircle end type EllipseT . ... interface initializeEllipseT subroutine initializeEllipseTScalar(ellipse) type(EllipseT), intent(out) :: ellipse end subroutine initializeEllipseTScalar subroutine initializeEllipseTVector(ellipse) type(EllipseT), intent(out) :: ellipse(:) end subroutine initializeEllipseTVector end interface . ...

V. A. Ginzburg University of Chicago Chicago, United States ginzburg@math.uchicago.edu Noncommutative del Pezzo surfaces The hypersurface in a 3-dimensional vector space with an isolated quasi-homogeneous elliptic singularity of type Er , r = 6, 7, 8, has a natural Poisson structure. ... We also construct a deformation-quantization of the coordinate ring of such a del Pezzo surface. ...

... Much of the improvement in S/N came from the inclusion of data that was rejected from version 1 due to either scattered light or small rotations of the field. ... 1996 (AJ 112, 1335) describes how radio positions (obtained with the Merlin and VLA interferometers) have been used to update the celestial coordinate system for the Hubble Deep Field. ... Here, we provide an IRAF script, hdf_wcs_fix.cl, which can be used to correct the header WCS information for the drizzled HDF version 2 images. ...

This home page belongs to small group of scientists working at . Sternberg Astronomical Institute which is a part of Moscow State University . ... Электронная библиотека научно-технической и художественной литературы (доступна только из ГАИШ) . ... Local staff . Dr. Edward Kononovich (konon -at- sai.msu.ru), Associate Professor . ... Dr. Sergey Ayukov (asv -at- sai.msu.ru), Research Fellow, Webmaster of the group . ... Joint seminar of Solar Studies Structure Group and Solar Photometry Group . ...

... The European HST Archive has been moved to ESA's European Space Astronomy Centre ( ESAC ), Spain, where most of ESA's Space Science Archives are located and operated from. ... The Space Telescope European Coordinating Facility (ST-ECF), jointly operated by ESA and the European Southern Observatory ( ESO ) was, until the end of 2010, the European HST science facility, supporting the European astronomy community in exploiting the research opportunities provided by the Hubble Space Telescope. ...

Stellarium 0.12.3 . ... StelCircleArcRenderer Class Reference . Provides functions to draw circle arcs using StelRenderer . ... drawGreatCircleArc (const Vec3d &start, const Vec3d &stop, const SphericalCap *clippingCap=NULL, void(*viewportEdgeIntersectCallback)(const Vec3d &screenPos, const Vec3d &direction, void *userData)=NULL, void *userData=NULL) . ... Create a circle arc renderer to draw multiple circle arcs . ... void(*)(const Vec3d &screenPos, const Vec3d &direction, void *userData)љ . ...

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 . ...

AstroNet is the name of network of Sternberg Astronomical Institute , Moscow University . Currently, we have full Internet connectivity at 115 Kbps via leased line to our Internet Provider The Radio-MSU Network since 1993. ... phone: +7 (095) 939-1683, +7 (095) 939-2383 . fax: +7 (095) 939-2383 . Evgeny Rodichev - system administrator of AstroNet, Internet group , er@sai.msu.su , . phone: +7 (095) 939-2383 . ... 13, Sternberg Astronomical Institute - Moscow University, Moscow, Russia. ...

Geometric Algebra 2 Quantum Theory Chris Doran Astrophysics Group Cavendish Laboratory Cambridge, UK Spin · Stern-Gerlach tells us that electron wavefunction contains two terms · Describe state in terms of a spinor S N · A 2-state system or qubit MIT2 2003 2 Pauli Matrices · Operators acting on a spinor must obey angular momentum relations · Get spin operators · These form a Clifford algebra · A matrix representation of the geometric algebra of 3D space ...

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? ...

... Integrate qualified and interested new participants/associates ­ Identify difficulties and barriers for cooperation Develop : ­ A census of the present European forces ­ A European Science Vision for Astronomy Inputs from the communities: present status, perspective ­ An Infrastructure roadmap + means for implementation Inputs from the communities ­ Propositions for common procedures ­ Test of Implementation of a coordinated ...

... S.P. KOROLEV ROCKET AND SPACE CORPORATION ENERGIA . ... OAO RSC "Energia" . ... Company's History . ... Flights Chronology . ... ISS Russian Segment . ... November 26, 2001 at 21:24:12 Moscow time the Progress M1-7 transport cargo vehicle with Colibri microsatellite (MS) accommodated in the payload compartment was launched from the Baikonur cosmodrome to the near-earth orbit in compliance with the International Space Station (ISS) flight program. ... 2015 JSC "S.P. Korolev RSC "Energia" . ...

... Here I will briefly describe some of the key surveys taking place, the distinction between cosmology and galaxy evolution studies and an update of where we are in terms of mapping the Universe (and whether weтАЩre likely to run out of Universe anytime soon). IтАЩll then focus on science from the GAMA project, very briefly summarising some of the key results from the first 100 papers, before focussing on where we are with the mass and energy census in the Universe. ...

... Tonight's Sky . ... The Magazine . ... Observing . ... Magazine . ... Star Atlas . ... Astronomy for Kids . ... Is there evidence of Oort-Cloud-like structures around other stars? ... We showed that if the solar system is typical, then Oort-Cloud-like structures should commonly exist around other stars. ... Get instant access to subscriber content on Astronomy.com! ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ... Astronomy Magazine . ...

Calculation attitude parameters: . ... Axes position of the GSE system relative to the s/c coordinate system is determinated by 3 angles Alpha , Betha and Gamma . Alpha and Betha determinate coordinates of a new XGSE axis, while Gamma determinates YGSE or ZGSE. ... String in the attitude file look like this: . ... 980307 09 16 21 604 -665.00 233.00 264.00 . ... 980307 09 16 30 604 -669.00 336.00 113.00 . ... 980307 09 16 42 604 -672.00 359.00 -114.00 . ... Angles Alpha Beta Gamma (rad) . ...

... The axial support is provided by 78 air pistons. ... The transverse support is provided by 38 air pistons, supported by cantilevers from the mirror cell, that act on the mirror local center of gravity surface. ... The locations where the transverse mirror support forces should be applied to the mirror are listed in Table 1 and illustrated in Figure 1. ... Figure 1: CAD drawing showing the 2.5-m primary mirror and the locations of the transverse support posts (black) and axial pneumatic pistons (blue...

. First page Back Continue Last page Overview Graphics . Deep large area surveys will provide better understanding of the large scale environment . Provide a complement to optical searches to remove bias towards stellar- dominated galaxies .

... R P is the perigalactic radius and R a , the apogalactic radius. Z max is the maximum deviation of the star from the Galactic plane. THe dotted curve shows the position of the Galactic plane. The hatched horizontal band shows schematically the band in Z , where the probability of that location of the star was calculated. The vertical band shows the width of the column in which we reconstruct the star distribution in Z . ... next figure | previous figure . ...