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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• Calculation of Extinction from Optical Colors
• Calculation of errors in smoothed arrays
• *srcinten* - Calculate Source Intensity

The following tasks belong to the category CALCULATION: . Calculations with set data'' In parentheses the name of the source file is given. ... Apply a flat field correction to a map by fitting a 2-D polynomial to the background. ( flat.c ) . ... Program to calculate flux in user defined box. ( flux.c ) . ... RESWRI derives the kinematical parameters from the observed velocity field by fitting tilted-rings to the velocity field and fits harmonic terms after convergence of the ROTCUR part of code. ...

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• Doing lengthy calculations from a GUI
• casacore: casa::Aberration Class Reference
• casacore: casa::SolarPos Class Reference

Blackholes Forum Message . ... So How Can We Calculate The Mass Of The BH? ... Posted by Lukas on January 25, 2005 14:00:31 UTC . ... Gravity is the weakest force of all - secretary - January 25, 2005 - 18:53 UTC . Singularity - bazukaz - January 25, 2005 - 23:19 UTC . Only in theory - secretary - January 26, 2005 - 02:15 UTC . ... www.astronomy.net . ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

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• Magnification (Power) And Using Eyepieces - an Astronomy Net Article
• Astronomy Terms - To Help You Study The Universe - an Astronomy Net Article

... 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
• ADASS VI Cover Page
• Modelling Spectro-photometric Characteristics of Nonradially Pulsating Stars

This diagram shows the six superimposed "layers" of the CSS table model. This diagram illustrates the algorithm for calculating a cell's final background. ... The diagram shows how, looking down on the six rectangles, one may compute the background color of each cell. ... A cell without a background color in the top layer is depicted as a "window" onto the lower layers, which give its final background color. ...

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• Long description of example illustrating background calculation
• Long description of example illustrating table row height calculations and
• Recursion

Input function: . Input X: .

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• AI SPbU library of scattering codes
• Database of Optical Properties -- Level: subpage
• Database of Optical Constants -- Level: welcome

... 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- measurement 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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• About modification of the INTERBALL orbital elements
• Prediction technique
• The INTERBALL Auroral PROBE orbital elements collections

... Tonight's Sky . ... Astronomy for Kids . ... Do orbital motions between galaxies affect calculations of the cosmological redshift? ... RELATED TOPICS: COSMOLOGICAL REDSHIFT . ... The observed redshift, or wavelength shift due to motion, of a galaxy s characteristic light spectrum is a combination of the galaxy s motion with respect to its neighbors ( peculiar velocity ) and the expansion of the universe ( cosmological redshift ). ... Get instant access to subscriber content on Astronomy.com! ...

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Russian SHAREABLE DATA CENTER Institute of Solar-Terrestial Physics SB RAS . ... The algorithm and appropriate program for decametric radiosignal propagation conditions prediction for paths from 500 to 9000 km have been developed at ISTP SB on the basis of normal wave method (AltyntsevaB.I,Iliyin N.V., Kurkin V.I. and others //Decameters channel simulation on the base of normal wave method . ... Solar activity indices are chosen automatically from the prediction date from the database . ...

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• East Siberian Center for the Earth's Ionosphere Research. VS data on-line

... The SDSS 2.5-m primary mirror is supported in a manner similar to the Apache Point Observatory 3.5-m telescope primary. ... The axial support is provided by 48 air pistons. The pistons have the same diameter thereby applying equal forces with the same air pressure. ... Each group supports a 120њ sector of the mirror. ... Figure 1: CAD drawing showing the 2.5-m primary mirror and the locations of actuators (green circles) These actuators apply forces (10*cos2 N) to correct astigmatism. ...

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• Appendix B

... The plot widgets as shown below are created using Calibrate|Visibility|PLOT . The one on the left is the general plot selection widget, the one on the right, the (data) index selection widget, is created when additional input is required as to the indices of the selected data. ... The calibration is applied to all stars selected in the plot selection widget. ... Below is the screen print after clicking on "Calibrate". Solution calculated for OB= 1, Bl= 1, Ch= 2. RMS [%] = 1.876) . ...

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• pyQC: script structure
• ESO - Observing Time Calcaulation for APEX Instruments Artemis and Supercam
• ESO - Science Announcements

National Research Institute for Physical-Technical and Radio Engineering Measurements IMPROVEMENT OF THE SOFTWARE BERNESE FOR CALCULATION OF THE EARTH ROTATION PARAMETERS ACCORDING TO THE DATA OF SATELLITE LASER RANGING (LAGEOS 1, LAGEOS 2) IN THE MAIN METROLOGICAL CENTRE OF THE STATE TIME AND FREQUENCY SERVICE Tsyba E. N., Kaufman M. B. 141570, Mendeleevo, Moscow region, Russia tel. +7-903-194-7575; tsyba_e_n@mail.ru ABSTRACT Preparatory ...

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• http://www.gao.spb.ru/russian/psas/ffk2013/tfiles/yerokhin_H2_FFK13.pdf
• Pulkovo NEO Page: Ephemeris Support
• Pulkovo NEO Page: Estimation of Accuracy of the Observations

RATAN-600 radio telescope . ... In the "radio-Shmidt telescope" mode the antenna system the South sector of the main mirror with the flat mirror ("South+Flat") of the RATAN-600 radio telescope is used. ... The antenna system the South sector with the flat mirror. ... The flat and circular mirrors of the RATAN-600 form the basis of the system. ... In the case of antenna system "South+Flat" the planoid is flat mirror, the circular reflector of RATAN-600 is the second mirror. ...

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• Determination of atmospheric parameters and calculation of chemical composition
• harak_e
• RATAN-600 siderial time service

... References: %observed energy levels: Del Zanna and Mason, 2005, A , 433, 731 %theoretical energy levels (second column): Storey, Del Zanna, Mason, Zeippen, 2005, A , 433, 717 (scattering calculation) %theoretical energies (third column): Del Zanna and Mason, 2005, A , 433, 731 (SUPERSTRUCTURE calculation with term energy correction) %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration % % Giulio Del Zanna - June 7 2005 . ...

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• CHIANTI: A Database for Astrophysical Emission Line Spectroscopy

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... Time-dependent stratification profiles тАУ logarithm of the abundance relative to hydrogen (log Ab(H) = 12.0) vs. optical depth тАУ of Cr in a Kurucz Atlas12 atmosphere with T eff = 12000 K and log g = 4.0. Zero field case; the ages are given in years. ... We present time-dependent, self-consistent diffusion calculations for Cr, Mn and Fe in a T eff = 12000K and log g = 4.0 stellar atmosphere. ...

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• Postdoctoral Research Assistant
• Abstract
• MARTIAN SKY CALCULATOR

... Classes . ... gTime Class Reference . This class implements time calculations. ... gTime (double ai_jDays=0) . ... gTime (const gTime &timeSrc) . ... Set the time value of the time object to the julian day of year, day. ... operator= (const gTime &timeSrc) . ... Returns the time GMT value in Julian days. ... Returns the time_t value of the gTime Object. ... Returns a gTime object setted with the actual machine time. ... gTime Object assigned with real machine time. double gTime::getGmtTm . ...

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• Stellarium:
• Alter World
• Stellarium: core/planetsephems/tass17.h Source File

Welcome to K -corrections calculator, simple service allowing one to determine K -corrections of a galaxy, given its redshift and one or more colours. ... K -correction in choose filter.. ... Redshift . Colour choose colour.. Colour value . Calculator . ... calculate spectral energy distributions , K-corrections calculator , GALEX FUV NUV , UKIDSS YJHK , K-corrections of galaxies , spectral based k-corrections , SDSS filter set K-corrections , K correction code IDL , kcorrect IDL C , . ...

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• K-corrections calculator (version 2010)

... 1 lab at http://lnfm1.sai.msu.ru/grav/english/lecture/filtering/ %--------------------------------------------------- clear; N_ signal =1024; % generating two-sin signal for (k=1:1:N_ signal ) signal (k)=sin(2*pi/10*(k-1))+sin(2*pi/100*(k-1)); end; plot ( signal ); %fast Fourier transform calculation Ftrns_ signal =fft( signal ); %amplitude spectrum calculation apl_ spectrum =abs(Ftrns_ signal ); plot (apl_ ...

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• http://lnfm1.sai.msu.ru/grav/english/lecture/filtering/Lab1.m
• http://lnfm1.sai.msu.ru/grav/russian/lecture/filtr/labs/Lab1.m
• http://lnfm1.sai.msu.ru/grav/english/lecture/filtering/Lab2.doc

This section is on a higher level than the rest, and is primarily meant for advanced users, who may wonder how orbital motion is actually derived. ... As stated earlier, the motion of a satellite (or of a planet) in its elliptical orbit is given by 3 "orbital elements": . ... 3) The mean anomaly M , an angle growing at a steady rate, increasing by 360 degrees each orbit . ... In polar coordinates ( r,f ) describing the satellite's motion in its orbital plane, f is the polar angle. ... The angles: . ...

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• Frames of Reference: The Basics
• Pictures/Рисунки
• The Sine of the Sum of Angles

... Class . ... METHOD . ... java.lang.Object ij.plugin.ImageCalculator . ... public class ImageCalculator . ... calculate (java.lang.String params, ImagePlus img1, ImagePlus img2) . ... run (java.lang.String params, ImagePlus img1, ImagePlus img2) . ... Method Detail public void run (java.lang.String arg) . ... run in interface PlugIn . public ImagePlus run (java.lang.String params, ImagePlus img1, ImagePlus img2) . public void calculate (java.lang.String params, ImagePlus img1, ImagePlus img2) . ...

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• AstroCC - A Coordinate Converter for Astronomy
• FractalBoxCounter (ImageJ API)
• Transit Finder