iraf-rvsao - 2.8.3-1+b3 main

This package obtains radial velocities and velocity dispersions using
cross-correlation methods or emission line fits. It consists of
several SPP tasks:
.
* XCSAO and PXCSAO: cross-correlate spectra,
* EMSAO and PEMSAO: find emission lines in spectra,
* BCVCORR: solar system barycentric velocity correction,
* SUMSPEC: add and/or modify spectra,
* LINESPEC: synthetic emission line templates,
* EQWIDTH: equivalent widths of lines in spectra,
* WLRANGE: wavelength overlap range for a list of spectra,
* LISTSPEC: list pixel, wavelength, delta wavelength, and/or pixel value for
spectrum image,
* PIX2WL: wavelength at a given pixel in a spectrum,
* WL2PIX: pixel at a given wavelength in a spectrum,
* VELSET Artificially change the redshift of (log-wavelength) spectra