... Abstract This routine computes the Jacobian of the transformation from cylindrical to rectangular coordinates. ... dx/dr dx/dlon dx/dz | ... Given a state in cylindrical coordinates ( r, lon, z, dr, dlon, dz ) the velocity in rectangular coordinates is given by the matrix equation: t | ... jacobi| |(r,lon,z) . ... Determine the Jacobian of the transformation from cylindrical to rectangular at the coordinates at the given cylindrical coordinates at time t./ drdcyl_c ( r(t), lon(t), z(t), jacobi ); /....

... connection points . ... The point P3 is the connection between the horizontal and vertical actuators and is the axis of rotation for the tail gunner motion. processing: survey/020204/reduc We can compute P3,P5 (the moveable points) in dome centerline coordinates if we have the actuator distances and we know the positions of the above connection points in dome centerline coordinates for a given position of the tertiary (say the nominal focus position).(see actuator distances to dome centerline ). ...

... Next: 7 kslice_3d: slicing data Up: Karma User Manual Previous: 5 Volume Rendering a . The <kpvslice> programme allows you to use a two-dimensional image to define a slice through a three-dimensional data cube. ... The slice is drawn on the total column density or velocity field map, and the corresponding position-velocity diagram will appear in the other window. ... To load the cube, press the Cubes button in the left window and select a cube file. ... The image is displayed in the left window. ...

... It uses the transformation parameters computed by the command ASTROMET/TRANSFORM . ... ASTROMET/COMPUTE computes the RA,Dec coordinates from X,Y coordinates directly from the transformation parameters, while it obtains X,Y from the RA,Dec ones in an iterative manner. Also note that the equinox of the computed coordinates is the same as the standard star catalogue (which is NOT necessarily the same as its epoch) and is 2000.0 in case the PPM catalogue is used. ...

lsst.coordConv љ unknown . ... Classes . ... coordConv::PVTCoord Class Reference . ... PVTCoord ( Coord const &coord, Eigen::Vector3d const &vel, double tai) . PVTCoord ( Coord const &coord0, Coord const &coord1, double tai, double deltaT) . PVTCoord ( PVT const &equatPVT, PVT const &polarPVT, PVT const &distPVT= PVT ()) . PVTCoord ( PVT const &equatPVT, PVT const &polarPVT, PVT const &distPVT, double equatPM, double polarPM, double radVel) . ... Definition at line 13 of file pvtCoord.h . ...

Computer Ephemeris for 2016 from DE200/LE200. Elements of the Partial Solar eclipse - 01 Sep 2016. 2016 Sep 1 9 h 20 m 11.70 s Min(gamma) = 0.33346 t = time - 9 h 20 m Geocentric coordinates of the Sun: Geocentric coordinates of the Sun: Right ascension = 104345.148 + t * 9.062 + t * t * -0.001 Declination = 80327.068 + t * -54.585 + t * t * -0.007 Parallax = 8.715 Radius = 1550.953 + t * 0.010 Geocentric coordinates of the Moon: Geocentric ...

The technical memorandum: Time and Time Interval Measurement with Application to Computer and Network Performance Evaluation (PostScript) describes a number of techniques for conducting experiments typical of computer network and transmission systems engineering. ... The usual data collected during a performance run of some experiment might include time offsets, time delays, frequency offsets and various error statistics. ...

... Posts tagged ?Mahalanobis distance? ... It bears the name of its inventor, Prasanta Chandra Mahalanobis. ... Therefore, under different names, I believe that the Mahalanobis distance is frequently applied in exploring and analyzing astronomical data. ... MADS] Mahalanobis distance? Tags: LDA , MADS , Mahalanobis , Mahalanobis distance , multivariate , outliers , PCA . ... 6 Comments . ... Entries RSS . ... vlk on [MADS] Parallel Coordinates . ... Entries (RSS) and Comments (RSS) . ...

... In order to produce the merged source-list from all the individual input source-list files, omsrclistcomb first produces a list of all the input sources sorted into order of decreasing source significance. To decrease the CPU time taken in the matching process, the distance (d) between two sources is computed from their equatorial-rectangulr coordinates (x, y and z), using the following formulae: . The equatorial coordinates are only computed once. ...

... The package AMPLE (Adaptable Minor Planet Ephemerides) is dedicated to solving a number of problems concerning minor planets with the aid of IBM-type personal computer. ... Obtaining selection of orbital elements and/ or photometric parameters of minor planets in conformity with imposed restrictions. ... The orbital elements of all minor planets used in AMPLE for 2015 have been determined in IAA on the ground of available observations in the catalogue of observations of the Minor Planet Center. ...

... Tonight's Sky . ... The Magazine . ... Observing . ... Gravitational wave search provides insights into galaxy evolution and mergers . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Astronomy for Kids . ... Cosmic Adventures . ... Cosmic evolution in a computer . ... V irgo Consortium astrophysicists used a 25-terabyte databank to create a computer simulation showing cosmic structure's evolution. ... Get instant access to subscriber content on Astronomy.com...

Next: ZGSC (Compressed GSC) and XSKYMAP . ... This is a preliminary report on an investigation of the quality and properties of plates digitized during creation of the Guide Star Catalog (GSC). The results will be vital for reclassifying GSC objects. ... Many objects are measured on more than one plate, and thus have multiple catalog entries. ... Among the shortcomings of the GSC are: biased magnitudes and incorrect classifications for certain objects, presence of artifact objects. ...

This document explains values, tables and other matters on solar physics computing pages. ... is040423.ete : SAHA-S tables, interpolation values: T, rho, X. Z is fixed at 0.02. See reference above. opal2005.etf : OPAL EOS, interpolation values: T, rho, X, Z. Downloaded from OPAL site , marked there as "2005", seems to be unpublished. opal2001.etf : OPAL EOS, interpolation values: T, rho, X, Z. Rogers F.J., Nayfonov A. Astrophys. ... The following values can be calculated: . ... dimensionless . ...

... Impact on source motion in Galactic coordinate system is given by Kovalevsky (2003), Malkin (2011) l cos b = -A sin l, b = -A cos l sin b, where A = R0 02 /c is the galactocentric acceleration called hereafter the GA constant. ... We just have to return to the traditional many-centuries-old astrometric practice of modelling the position of a celestial object as a linear trend with two parameters: the position at the initial (conventional) epoch and the apparent (proper) motion. ... 2011). ...

... Dr. Ravil Nazirov is the head of the workshop, and Andrew Ananjev is the secretary of the workshop. ... The workshop is used to be held in the last decade of the month, preferably on Tuesdays. ... The next session will take place October 29, 1996 . ... There is "CONPAS" mailing list which you can join to discuss issues of problem solving and to be automatically notified of important dates and decisions with respect to the coming sessions. ... Secretary of the Workshop: Andrew Ananjev . ...

... Diameters computed with the following routines exclude super giants and binaries! If you want to bypass the latter restriction, set the BFLAG field to '.' (it is set to 'B' for binaries). The routine computing the diameter from (B-V) also excludes bright giants and stars later than K. diameter_ri Compute diameter from color index and -magnitude. diameter_bv Compute diameter from color index and -magnitude. Christian Hummel 2015-04-28 ...

... 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. ...

The original files with the data were in different formats. ... Such files were named "standard data files" and linked to the database. They can be easily transformed to any desirable format by a code. Here we present two simple computer programs of this kind. ... When running the code, you can specify columns in the output file: wavelength, energy (eV) or wavenumber (cm -1 ) as the first column, and complex refractive index or dielectric function as the second and third columns. ...

... To introduce you to the Python programming language, and its Visual module (VPython), which allows 3D simulation. The computer labs are held in room BOZO 112, not in the usual physics lab. ... This lab will use the Python programming language. ... Click on the Windows button in the bottom left, select "Programs", then the "A-Z" list of programs. ... Later in the course you will need to write your own VPython programs for assessment - this lab is your chance to make sure you can do this. ...

grdfilter - Filter a . grd file in the Time domain grdfilter input _ file . grd -D flag -F < type >< width > -G output _ file . ... The output . ... grd The file of points to be filtered. D Distance flag tells how grid (x,y) relates to filter width as follows: flag = 0: grid (x,y) same units as width , Cartesian distances. flag = 1: grid (x,y) in degrees, width in kilometers, Cartesian distances. flag = 2: grid (x,y) in degrees, width in km, dx scaled by cos(middle y), Cartesian distances. ...