... The user provides SCHED with source coordinates in one of the J2000, B1950, or DATE coordinate systems. ... This date is specified using PRECDATE . ... This is enough to harm phasing of the VLA at high frequencies and enough to be rather undesirable for positions used on the correlator. ... For example, the B1950 coordinates of the VLA calibrators are either based on absolute measurements made in 1979.9, or are converted from more modern J2000 coordinates using an assumed ``observe'' date of 1979.9....

Next: Image with sky grid Up: Celestial Coordinates from Image Previous: *skypix* conversion . ... logical . raw pixel coordinates of current image or image section . ... pixel coordinates of original image from which current image was derived ( logical if no blocking or sectioning have been performed) . ... sky coordinates . ... pixel coordinates on the tv ( SAOimage ) display. These will logical if an image section is specified as input to the display task. rsdc@cfa.harvard.edu . ...

... AstroCC is a coordinate conversion utility for astronomy. It accepts an object designation or the coordinates of an object and calculates coordinates in alternative systems, and at different dates, times, and locations. It also provides lunar and bright planet coordinates to aid in planning observations. ... BJD values may also be retrieved from http://astroutils.astronomy.ohio-state.edu/time/utc2bjd.html which is based on Eastman et al. ... Coordinate data are obtained from SIMBAD. ...

lsst.coordConv љ unknown . ... Classes . ... All љ Classes љ Namespaces љ Files љ Functions љ Variables љ Typedefs љ Enumerations љ Enumerator љ Pages . coordConv: Astronomical Coordinate Conversions . The coordConv package provides the following classes and functions. ... Coord : represents a position on the sky, with proper motion and radial velocity; provides easy access to spherical and cartesian position. ... Position conversion functions: . ... Time conversion functions: . ...

OptInt PmWiki : Pm Wiki / Upgrading From Pm Wiki 1 . This page gives suggestions for upgrading an existing PmWiki 1.x installation to use PmWiki 2.0. In this page we assume that a site administrator already has a site running using PmWiki version 1.x or earlier in a somewhat standard configuration, and wants to upgrade to the 2.0 software. Important note: The normal PmWiki upgrade procedure (i.e., copy the new software over the existing one) won't work for moving from 1.x to 2.0. ...

... The initial descriptions of the FITS format provided a simplified method for describing the physical coordinate values of the image pixels, but deliberately did not specify any of the detailed conventions required to convey the complexities of actual image projections. ... They were CRPIX n for the reference pixel location on pixel axis n , CRVAL n for the coordinate value at that pixel, CDELT n for the increment at that pixel in the coordinate value, and CTYPE n for the type of coordinate. ...

... Step 1: The magnetic field line tracing from the satellite position up to magnetic equatorial plane using IGRF magnetic field model. Step 2: Tracing back from the point (produced on the Step 1) to the Ionosphere (by using only dipole magnetic field) . ... The magnetic field line tracing from the satellite position up to the Ionosphere (the stop trace altitude 110 km) using Main (dipole) + Extraterrestrial magnetic field model (for example, Tsyganenko [1987], or [1989], or [1990] ) . ...

... Step 1: The Footprint position calculation by the magnetic field line tracing from the satellite position up to the Ionosphere by using IGRF + Tsyganenko [1987] magnetic field model (the stop trace altitude 110 km). Step 2: Tracing back from the Footprint (produced on the Step 1) to the dipole equatorial plane (by using only IGRF magnetic field model up to the geocentric distance 8 RE and dipole field model after this distance). ... Back to the description . ...

Next: Directory Manipulation Up: C Standard Library Functions Previous: Character Classification and Conversion . ... double atof( char * string ) - Convert string to floating point value . int atoi( char * string ) - Convert string to an integer value . int atol( char * string ) - Convert string to a long integer value . char *itoa( int value , char * string , int radix ) - Convert an integer value to a string using given ...

... The simplest way to convert PostScript files into PDF on our Linux machines is to use the ps2pdf command, e.g. ps2pdf file.ps file.pdf . ... If all original files contain only one page then the resulting PDF document would have have one page for each file. ... Step: Add a pdfmark operator in the set-up section so that the list of bookmarks in the resulting PDF document is visible on the left hand side when the file is opened: . ... where bookmark_file is an ASCII file containing the pdfmark...

... Particle distribution: dN d - with =1- ln pcn ln g Electron-photon conversion e + _ + _ electron _ e e electron/ positron high- energy photon e+ positron -25 cm cross-section, 10 8 6 4 2 0.5 1.0 center-of-momentum energy , MeV (log scale) 2 e + _ Proton-neutron conversion cm cross-section, 10 proton u +2/3 2 -28 d -1/3 6 u +2/3 4 resonance _ u d d+1/3 -1/3 d u+2/3 +2/3 -1/3 2 150 340 center-of-momentum ... Does the peak (cut-off) energy decrease with observation angle? Not always. ...

. Please enter the lightcurve FITS file name: . Lightcurve file: . Please note, the output dates are Barycentric-corrected Julian Dates expressed in Terrestial Time - BJD(TT). A similar FITS-to-ASCII lightcurve converter is available for SuperWASP data. If you have questions, bug reports or suggestions how to improve this service, please fell free to contact the author (Kirill Sokolovsky) via e-mail: kirx[at]scan.sai.msu.ru .

. back one page . previous slide . next slide

XEphem Forum Message . ... Post . ... Catalog Conversion Utility . ... Post Message | ... Posted by Jonathan Senning on January 3, 2001 17:40:56 UTC . ... Re: Catalog Conversion Utility - stevev - January 3, 2001 - 19:54 UTC . ... Re: Catalog Conversion Utility - sziegenbalg - January 4, 2001 - 12:16 UTC . ... www.astronomy.net . About Astronomy Net | ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

... Contents . ... Sidereal time . ... Mean longitude of the Moon, mean elements of the Moon's orbit and equator . ... Ephemeris for physical observations of the Sun . ... Ephemeris for physical observations of the Moon . ... Matrix elements for conversion to CIRS . ... Conversion of mean time to sidereal time (with accuracy 0.01 s ) . ... Conversion of sidereal time to mean time (with accuracy 0.01 s ) . ... Conversion of mean time to sidereal time (with accuracy 0.001 s and 0.0001 s ) . ...

... Sun's ecliptical positions. Explanations. Each row contains at 0h of Time Dynamical Terrestrial: month, day , day of the week, julian day number at beginning of day (only last three digits is given, add head of column to form correct number ), longitude in system of mean equinox of date (degrees, minutes, seconds ), two latitudes (the first for mean equinox of date and the second for mean epoch of year; seconds ), radius-vector (astron. units), precession in ...

Download Izmccd (~2.7 MB). Solution of problems at identification of star field. ... 2) Scale is not correct. ... In this case algorithm of identification will revise all values of scale from twice smaller up to twice greater. ... There should be more than value of the field "Number of stars in frame". ... The star field is considered identified if number of the identified stars more or equally to this value. It is necessary to set value from 4 up to value of field "Number of stars in frame". ...

Russian Version [ MS-Win ] . ... Satellite data ] . SMIS ] . The application is designed to perform high-accuracy geographic referencing and calculate geographic coordinates of satellite data using orbital data. ... The program performs conversion of satellite images into conic or equidistant projection and overlays the coordinate grid over it. ... When necessary the program allows for setting control points for correction of the reference. Shareware version (APT NOAA data processing) . ...

POVpan10.zip 128130 PM front end for POVray alchemy_191_os2.zip 935819 Image Alchemy, graphics conversion tool alchemy_os2_1.11.zip 1136768 graphical front end for Image Alchemy anigif02.zip 93508 GIF animation tools asg11.zip 219936 stereo picture generator aspcd.zip 61293 PhotoCD viewer blendgif.zip 181045 create multi-framed animated GIF files blpnt025.zip 108859 simple paint program bmpv10.zip 202545 simple .BMP ...

SAI VO . ... Web Services . Catalog Access Services . ... SAI Web Services . ... This service aims to automatically match stars in FITS image provided with catalogue and add the correct WCS keywords to its FITS header. ... Service Web Interface . ... The service is available here To use it, you has to provide the image as a Base64-encoded string, along with the rough information on image field of view size and center (the latter may be deduced from FITS header keywords like 'RA' and 'DEC'). ...