Next: Discussion Up: Old neutron star distribution Previous: Galactic potential . It proves to be teachful to have a look at the calculated distribution (Fig. ... The galactic z -distribution of stars and peculiar velocities slightly smear out this narrow boundary. ... The final picture (Fig. ) of the old neutron star density distribution is obviously the sum of filled equipotential lobes with different weighted with the probability shown in the Fig. ...

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• Galactic potential
• X-ray Galactic Sources and Binary Radiopulsars as Probes of the Initial Mass
• Galactic Gravitational Wave Background

... The file names' construction . The flight (m) stage's file set . ... the orbital data used for the flight operation monthly (m) long-term planning, . ... The orbital calculations are based on the initial orbital data determined by KIAM RAN using the orbital radio measurements treatment.The determined initial orbital data are presented as a state vector (satellite position and velocity) in the J2000 reference. ... Accept the file with extension '.bgr', where the Moscow time (MT=UT+3h) is used. ...

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• Tail Probe | Matrix of Transformation Tail Probe | Matrix of Transformation
• mcfile
• The plot of the magnetic conjugation's time distribution

User has possibility to impose some restriction(s) on the Results of calculation. ... Possible set of restrictions depends on coordinates that were specified for planned run. ... The set of the quantities on which may be imposed restrictions in the next run are highlighted on marking Set restrictions . ... Dist. d(R.A.)/dt . ... Phase . ... To impose restriction on any quantity mark check box at the left of corresponding line and then click on the field where you want to introduce limitative value. ...

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• AY2006 (preface)
• AY (preface)
• AY2008 (preface)

... StarCalc Home Page - Downloads . ... File . StarCalc (English version) . ... With minimal configuration, version 5.72 of StarCalc includes the next interfaces: "Horizon", "Horizontal coordinategrid", "Equatorial coordinate grid", "Constellation boundaries", "Constellation lines", "Constellation names", "Star proper names", "Bright Star Catalog", "Deep-sky objects", "Sun", "Moon" and "Planets and satellites" . Plugins for StarCalc . ... Interface to NGC 2000 (plugin + catalog file) . ...

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... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... When we designed the exhibit, we wanted the zodiacal constellations to be indicated. However, whereas the Orrery is laid out in the ecliptic plane, constellations are defined in B1875 equatorial coordinates. Therefore for each adjacent pair of zodiacal constellations, we calculated the point at which the J2000 ecliptic intersects the boundary between the two constellations. ... numbers . plot . image . ...

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... 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. ...

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• POLIMODEL (V1.00) --- April99 --- POLIMODEL (V1.00)

... Values have been scaled arbitrarily. High ratios are shown in blue, corresponding to blue colors, and low ratios are shown in red, corresponding to red colors. ... Noise combined with background subtraction difficulties in the lower left quadrant of the WISP1 data (see Fig. \ref{Fig:wisp_snr_mskd}) make colors in this area very unreliable. ... The values shown here are typically a factor of ~3 less than those calculated for the Schmidt data, shown in Figure \ref{Fig:bj_alpha}. ...

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• Making Maps: Example + Animation

... This task operates on event data in an event list. ... In the first two cases, the celestial coordinates of the reference point are taken respectively as the values of the RA_NOM , DEC_NOM or RA_OBJ , DEC_OBJ values in the input event file header. ... Although the OM attitude information may be more accurate, it will not be present throughout part of the observation, and as such, the default source for the attitude data should be "ahf". ...

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• Algorithm

... For given geographical longitude and time zone show the current data and time, Universal data and time, current local star time. ... Accept 10 different data formats (data&time, data with decimal day of month, data with decimal day of year, decimal year, some Julian dates), calculate from any formate to others, show day of week. Current data and time direct insertion function is exists. ... Calculate angular distance between two points at the sky by its equatorial coordinates. ...

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... In addition to time, frequency, and scale, there are two other coordinate axes within this transform space: shear-in-time (obtained through convolution with a q-chirp) and shear-in-frequency (obtained through multiplication by a q-chirp). Signals in this multidimensional space can be obtained by a new transform which we call the ``q-chirplet transform'', or simply the ``chirplet transform''. ... CHIRPLET TRANSFORM SUBSPACES . ... Relationship Between Auto Chirplet FF Plane and Radon Transform . ...

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• Relationship Between Auto Chirplet FF Plane and Radon Transform
• Notation
• Warbling Chirplet: Analysis of Signals of Oscillating Frequency

... User Guide ] Task: cotra Purpose: coordinate transformations Categories: utility COTRA is a MIRIAD task to transform between astronomical coordinate systems. ... There is no default. ... Possible values are "b1950" (the default), "j2000", "galactic", "ecliptic" and "super-galactic". b1950 and j2000 are equatorial coordinates in the B1950 and J2000 frames. ... Key: epoch Epoch (in standard Miriad time format) of the coordinate. ... Key: uvw Standard Solar motion in right handed UVW coordinate system....

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• Angular separation of two sources
• hermes
• selfcal

... Abstract Return a 3x3 matrix that transforms positions in inertial coordinates to positions in body-equator-and-prime-meridian coordinates. ... J2000 B1950 Earth mean equator, dynamical equinox of B1950 FK4 Fundamental Catalog (4) DE-118 JPL Developmental Ephemeris (118) DE-96 JPL Developmental Ephemeris ( 96) DE-102 JPL Developmental Ephemeris (102) DE-108 JPL Developmental Ephemeris (108) DE-111 JPL Developmental Ephemeris (111) DE-114 ...

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• ACS Data Handbook
• Introduction
• TICTOC User's Guide

Next: *upspecrdf, downspecrdf* - Transform Up: Spectral Analysis Previous: *grid_plot* - Plot Results . The conversion of count rate to flux depends on the intrinsic spectrum of the source, so xflux must be used in conjunction with fit . Fit generates a table of the best fit intrinsic spectrum ( _int.tab extension). xflux uses this table to calculate either the integrated flux between two energy limits or the flux density at a specific energy. ... This produces ``..._obs.tab'' file. ...

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• The Chandra Multiwavelength Project (ChaMP) - Spectra
• Spatial Region Coordinates
• *srcinten* - Calculate Source Intensity

Download Izmccd (~2.7 MB). ... a) a choice of the best mode of measurements of stars and objects ("Properties/Measurement"), . b) a choice of reference stars. ... 1) necessity of presence on an image of a plenty of stars (we recommend to apply this mode, if on the frame of reference stars is more 100) . ... Sx and Sy depend from residuals at all reference stars (reference stars are marked by blue color). ... These residuals are the image of the star a minus function of a profile for each pixel. ...

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... Saturn from Above . ... This image of Saturn could not have been taken from Earth. ... Since Earth is much closer to the Sun than Saturn, only the day side of the ringed planet is visible from the Earth. Three Galaxies and a Comet . ... Sh2 155: The Cave Nebula . ... Venus, Zodiacal Light, and the Galactic Center . ... The Great Carina Nebula . ... Hale Bopp: The Great Comet of 1997 . ... Sixteen years ago, Comet Hale-Bopp rounded the Sun and offered a dazzling spectacle in planet Earth's night. ...

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• Astronet > Sky Map, professional edition

function [l,b, mul , mub ]=equ2gal(ra,de, mura , mude ); %% % % Calculating galactic coordinates and % proper motion components: % Transformation: Equatorial ---- Galactic % Epoch and equinix J2000 % % Function call: [l,b, mul , mub ]=equ2gal(ra,de, mura , mude ) % % % Input: ra, de - eequatorial coordinates (in degrees) % mura , mude - proper motion components % in the equatorial ...

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• IDL programs
• Division of the Galaxy and Variable Stars
• Data bases of Natural Satellites. Documentation. Structure

Galactic coordinate system based on multi-wavelength catalogues Ping-Jie Ding, Jia-Cheng Liu, and Zi Zhu School of Astronomy and Space Science, Nanjing University, China Outline Introduction: why we need to establish a new Galactic Coordinate System ( GalCS ) Data and methods used to find a proper GalCS Results and conclusion Discussion 2 Introduction: why we need to establish a new GalCS The Galactic coordinate ... 3 The GalCS is defined by three parameters p , p and . ...

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• http://www.gao.spb.ru/english/personal/malkin/publ/zm14e.pdf
• http://www.gao.spb.ru/english/as/j2014/presentations/vavilov.pdf
• http://www.gao.spb.ru/english/as/j2014/presentations/suvorkin.pdf

. N OTE: . Only clusters with R<60 kpc were used to compute the spatial parameters and metallicity gradients for all subsystems except the corona. The numbers in parantheses give the number of clusters for which the corresponding parameter is known. The X O scale length of the old halo is strongly distorted by the observed asymmetry of the distribution of the corresponding clusters projected onto the XY plane ( Fig. 4А ) . discussion in the text | previous table .

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• Population of Galactic globular clusters, figures
• Subsystems of the Galactic halo, figures
• F-stars in galactic disk, figures

... Tonight's Sky . ... The Magazine . News . Observing . ... Community . ... Magazine . ... Gravitational wave search provides insights into galaxy evolution and mergers . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Open cluster NGC 2818, spiral galaxy NGC 2964, and spiral galaxy NGC 2976 . ... Astronomy for Kids . ... constellation observing . ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...

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• constellations | Astronomy.com
• The Iris Nebula in the constellation Cepheus | Astronomy.com
• The California Nebula in the constellation Perseus | Astronomy.com

... Next: The PROS Big Up: Software Systems Previous: Data Reduction Software . ... The srcinten task provides PROS users with a tool to compute count rates for point sources in the ROSAT High Resolution Imager (HRI). ... Corrected upper limits are cited at locations where the count rate falls below the source detection threshold. ... Srcinten is a new PROS task that computes and applies the above correction factors to the net counts in a user-specified aperture. ...

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• Calculating the Position and Velocity Components of HST
• Interpolation of Irregularly Sampled Data Series---A Survey
• World Coordinate Systems as Objects