XCSAO is a software package for obtaining radial velocities of stars and galaxies from optical spectra using the cross-correlation method. It has been written to work within the IRAF environment, and is compatible with other packages being developed at SAO for optical spectra. We discuss the individual components of the package in terms of the decisions required to set up the package for a new instrument/observing program. Using artificial spectra we show the procedures necessary to optimize the set up parameters, and demonstrate the robustness of the package when applied to spectra from both stars and galaxies.
Astronomical Data Analysis Software and Systems I
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