SAO Telescope IRAF Software RVSAO is an IRAF add-on package which contains tasks to obtain radial velocities from spectra using cross-correlation and emission line techniques. Version 2.0b15 May 15, 1998 To use the packages first start IRAF using the 'cl' command and at the 'cl>' prompt type 'r2rvsao'. Extensive online documentation is available on the Web at: http://tdc-www.harvard.edu/iraf/rvsao The RVSAO User's Manual is available in two different forms: Postscript files at IRA web address Manuals in room 307 Contact Person: F.Tinarelli tinarelli@ira.inaf.it