... BigStarCatalogExtension::StarWrapper< Star > Class Template Reference . StarWrapper (const SpecialZoneArray < Star > *a, const SpecialZoneData < Star > *z, const Star *s) . ... getJ2000EquatorialPos (const StelCore *core) const . ... getVMagnitude (const StelCore *core, bool withExtinction=false) const . ... getSelectPriority (const StelCore *core) const . ... getInfoString (const StelCore *core, const InfoStringGroup &flags) const . ... getEquinoxEquatorialPos (const StelCore *core) const . ...

... 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. ...

lsst.coordConv љ unknown . ... Classes . ... coordConv::OtherCoordSys Class Reference . ... OtherCoordSys (std::string const &name, double date=0, DateTypeEnum dateType= DateType_None , bool isMean =false) . ... virtual Coord љ . ... CoordSys (std::string const &name, double date, DateTypeEnum dateType, bool isMean , bool canConvert ) . ... convertFrom ( CoordSys const &fromCoordSys, Coord const &fromCoord, Site const &site, double tai=0) const . ... virtual Coord coordConv::OtherCoordSys::removePM . ...

... Class List . ... Class Members . This is the complete list of members for casa::Coordinate , including all inherited members. checkFormat (Coordinate::formatType &format, const Bool absolute) const . ... pure virtual] . convertFrom (Vector< Double > &) const . ... doNearPixel (const Coordinate &other, const Vector< Bool > &thisAxes, const Vector< Bool > &otherAxes, Double tol=1.0e-6) const . ... near (const Coordinate &other, const Vector< Int > &excludeAxes, Double tol=1.0e-6) const =0 . ...

... Searching for Far Out and Wandering Worlds . An artificial comet holds secrets to Earths life . ... Supernova showered Earth with radioactive debris . ... How do scientists predict the orbit and apparent т??peakт?? magnitude of an incoming comet such as Comet ISON (C/2012 S1) when it is far from Earth? ... COMET ISON . ... Comets are like small planets that follow orbits of all shapes and sizes around the Sun. ... Get instant access to subscriber content on Astronomy.com! ... Trains.com . ...

HST Call for Proposals and HST Primer for Cycle 24 . ... Hubble Space Telescope Call for Proposals for Cycle 24 > Chapter 8: Filling Out the APT Proposal Form > 8.15 Targets . ... Your proposal can include observations of fixed targets (i.e., all targets outside the solar system whose positions can be defined by specific celestial coordinates), generic targets (i.e., targets defined by certain general properties, rather than by specific coordinates), and solar-system targets (i.e., moving targets). ...

The VLTI Calibrator Selector Tool is a tool intended to assist in the selection of suitable interferometric calibrators for VLTI observations with MIDI and AMBER. It uses a model of the VLTI and its instruments to assess the fringe visibility, given the observed bandpass, the geometry, spectrum, and coordinates of the target and the time at which the observations are to be made. ... The tool offers an HTML/Java based interface and consists of two pages. ... The quality flag depends on LDD_chi2. ...

... Archives . ... Differential Emission Measure [Eqn] . ... Astro 301, class 1, and it took all of 20 minutes of talk about stellar magnitudes to put that notion to permanent rest. ... Now, it turns out that the human eye perceives brightness on a log scale, so magnitudes are numerically similar to log (brightness). ... frac{5}{2}\log_{10}\left(\frac{f_{object}}{f_{standard}}\right) \,,$$ . ... frac{5}{2}\log_{10}\left(\frac{L_{object}}{4 \pi d^2}\frac{1}{f_{standard}}\right) \,.$ ... Chandra Blog . ...

... Class . ... java.lang.Object ij.gui.Roi ij.gui.PolygonRoi ij.gui.PointRoi . ... public class PointRoi . ... This class represents a collection of points. ... PointRoi (int[] ox, int[] oy, int points) . ... Constructor Detail public PointRoi (int[] ox, int[] oy, int points) . ... Creates a new PointRoi using the specified offscreen coordinates. public PointRoi (int sx, int sy, ImagePlus imp) . ... Returns a copy of this PointRoi with a point at (x,y) added. public PointRoi subtractPoints ( Roi roi) ....

BTA Apparent Place to/from FK5 coordinates transformation. (based on procedure published at IAA A.Y. and on IAU SOFA library) . Coordinates( J2000 ): . ... 100 m a : . sec/century) . ... arcsec/century) . for FK5 epoch) . ... arcsec) . ... AP (current moment) .. J2000 (FK5) Get AP(current coordinates) from BTA TCS . ... Mean Sidereal Time: 18:26:1.181 (Apparent=18:26:0.946) . ... J2000) 00:00:00.000 +00:00:00.00 ...

... Explanations. Each row contains at 0h of Time Dynamical Terrestrial: month, day, apparent right ascension (hours, minutes, seconds), apparent declination (degrees, minutes, seconds), hour difference of declination (seconds), apparent radius (minutes, seconds), equation of time (hours, minutes, seconds), hour difference of equation of time (seconds), time of upper culmination of Sun (hours, minutes, seconds), change in moment of upper culmination when longitude changes on 1 hour to west (seconds). ...

... Field size . Object name . ... Map size . ... Field size: the approximate size of the map in the Y direction. ... Galaxies: . ... Galaxies, which size exceeds some value depending on the field and map sizes, are displayed with their real positional angles and sizes by 25m isophote. ... In the "tools" fields there are links to the several famous AVO (Astrophysical Virtual Observatory) resources: NED and Simbad databases and DSS2 (Palomar Digitized Sky Survey) images of the corresponding sky area. ...

Pulkovo NEO Page . ... EPOS Software Package . ... EPOS ( E phemeris P rogram for O bjects of the S olar system) is the Windows PC application for study and ephemeris support of observations of the Solar system objects. ... It controls the part of common data and transfers the control to one of the programs that solve the restricted set of tasks. ... So with the EPOS software package one can calculate the accurate ephemerides for many objects and get the quick illustration of their motion as well. ...

The aim of this section of the course is to familiarise you with celestial Coordinates. ... I found some good notes explaining the celestial coordinate system on the web: . ... 1st Dec: 04hr, 00min In addition to the equatorial coordinates described in the notes above, astronomers also use (at least) two other coordinate systes: galactic coordinates and ecliptic coordinates. ... Ecliptic coordinates use the ecliptic (the Earth's path around the sun) as the equator, and are used for solar system work. ...

... The Second International Astronomy Olympiad . ... Problems to solve, 8-10 Form Text of these problems is available in Russian too. ... Two stars have the same absolute magnitude. ... The orbital period of Mars is 687 days. ... See problem 2. for 8-10 Form. ... Problem to solve, 9-12 Form Text of the problem is available in Russian too. ... Problem is about Doppler-effect, to find velosities of two stars using their spectra and spectrum of our Sun, to estimate speed of the Earth moving around the Sun...

Download Izmccd (~2.7 MB). Designation of objects on image. Circles of different colour mark objects on an image. ... The star or something another is marked for the following measurement. If set mode "i", at click on the star, a coordinates in pixels, equatorial coordinates, proper motions and star magnitudes in two photometric systems are printed in a window "Information". Equatorial coordinates; proper motions and magnitudes are printed, if this star is identified in a catalogue). ...

The Equatorial Inertial (GEI) coordinate system: . The X GEI axis is directed to the point of the spring equinox, . The Z GEI axis is coincide with the Earth's rotation axis, . The Y GEI supplements the right three. The Geographic (GEO) coordinate system: . ... The Solar Magnetic (SM) coordinate system: . ... About space physics coordinate transformation see Russel [1971] and Hapgood [1992] . ... M.A. Hapgood , Space physics coordinate transformations: A user guide // Planet Space Sci. ...

User should choose the type of coordinates and type of positions by marking corresponding radio button, first in the column headed Type and then in the column headed Positions . Rectangular coordinates are compatible only with choice Geometric . ... Remember that photographic or CCD observations are comparable with astrometric positions, whereas meridian observations are comparable with apparent ones. Observations made in horizontal coordinate system also are linked to apparent positions. ...

... The AST library provides a comprehensive range of facilities for creating and using world coordinate systems that describe astronomical data. This paper gives a brief over-view of these facilities and a description of the integration of these facilities with the Starlink ``Extensible N-Dimensional Data Format'' (NDF), which stores bulk data in the form of N-dimensional arrays of numbers. ... WCS - A new component which provides facilities for storing an AST FrameSet . ... Display of WCS grids . ...

spaceweb@oulu.fi - last update: 21 December 1998, 1400 UT (RR) . ... This is not as trivial a question as one might think, since it is not enough to know the location with respect to the Earth and/or the Sun in some arbitrary coordinate system. One may have to consider things like differences between the solar equatorial plane and the Earth's orbital plane, the changing direction of Earth's spin axis during the year, and the magnetic dipole orientation. ... Geocentric solar ecliptic . ...