RVSAO -- An IRAF package to obtain radial velocities from spectra The package RVSAO defined in this directory was developed by Doug Mink at the Harvard-Smithsonian Center for Astrophysics from the redshift package originally written by Gerard Kriss at Johns Hopkins University and modified significantly by Steve Levine at the University of Wisconsin. It obtains radial velocities and velocity dispersions using cross-correlation methods or emission line fits. It consists of eight tasks: XCSAO, EMSAO, PXCSAO, PEMSAO, BCVCORR, SUMSPEC, LINESPEC, and EQWIDTH. If you have any problems, please contact Doug Mink, mink@cfa.harvard.edu. A task, RELEARN, has been provided to aid in updating parameters. Run it instead of UNLEARN to keep your current parameters settings while adding new parameters. A set of templates commonly used at the CfA is included in the Templates/ subdirectory. Someday, there will be documentation about them. After the Revision Notes, you will find installation instructions. A fairly complete description of this package has been published in the August 1998 issue of the Publications of the Astronomical Society of the Pacific: http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=1998PASP..110..934K For later publications, see http://tdc-www.harvard.edu/iraf/rvsao/ *************************************************************************** 2.7.3, March 31, 2009 Add new shell scripts in Shell/ to run most RVSAO tasks on the Unix/Linux command line. 2.7.2, March 13, 2009 XCSAO: Add option to shift orders when cross-correlating echelle spectra 2.7.1, February 20, 2009 EMSAO,XCSAO: Assume RA is in degrees if decimal keyword value, not hours 2.7.0, January 30, 2009 SUMSPEC: Fix bug which put back heliocentric velocity correction when shifting to a specific velocity and delete IRAF WCS keywords if one spectrum is being rebinned. EQWIDTH: Fix error of index so that it is at least closer to correct. Fix bug so that a lack of a VELOCITY or BCV keyword does not crash the program. Clean up exposure scaling. See the NEWS file for the earlier history of the software. *************************************************************************** To install this package in your local IRAF system, take the following steps: 1) The package is distributed as a tar archive; IRAF is distributed with a tar reader. The tar archive may be obtained by magnetic tape or anonymous ftp. For magnetic tape go to step [2] and when reading the tar archive simply mount the tape and use the tape device name for the archive name in step [4]. To obtain the package via ftp (assuming a UNIX computer): % ftp cfa-ftp.harvard.edu login: anonymous password: [your user name] ftp> cd pub/iraf ftp> get rvsao-2.7.3.readme ftp> binary ftp> get rvsao-2.7.3.tar.gz ftp> quit % ls -l -rw-r--r-- 1 mink xxxx xxx xx xx:xx rvsao-2.7.3.readme -rw-r--r-- 1 mink xxxxxx xxx xx xx:xx rvsao-2.7.3.tar.gz % 2) Create a directory to contain the RVSAO external package files. This directory should be outside the IRAF directory tree and must be owned by the IRAF account. In the following examples, this root directory is /local/rvsao/. Make the appropriate file name substitutions for your site. 3) Log in as IRAF and edit the extern.pkg file in the hlib directory to define the package to the CL. From the IRAF account, outside the CL, you can move to this directory with the command: % cd $hlib Define the environment variable rvsao to be the pathname to the rvsao root directory. UNIX pathnames must be terminated with a '/'. Edit extern.pkg to include: reset rvsao = /rvsao-2.7.3/ task rvsao.pkg = rvsao$rvsao.cl or, to avoid conflicts with earlier versions or the IRAF rv package, reset r2rvsao = /rvsao-2.7.3/ task r2rvsao.pkg = r2rvsao$r2rvsao.cl Near the end of the hlib$extern.pkg file, update the definition of helpdb so it includes the rvsao help database, copying the syntax already used in the string. Add this line before the line containing a closing quote: ,rvsao$lib/helpdb.mip\ or, if using r2rvsao, ,r2rvsao$lib/helpdb2.mip\ 4) Add to hlib$clpackage.men the package description: rvsao - Radial velocity package from SAO or, if using r2rvsao, r2rvsao - Radial velocity package from SAO 5) Unpack the tar file into the RVSAO root directory. On a UNIX system, where ftpdir is the pathname of the directory into which the package was ftp'ed and rvsao is the RVSAO root directory: % cd $rvsao (or $r2rvsao) % cd .. % zcat $ftpdir/rvsao-2.7.3.tar.gz | tar xvf - The archive file can be deleted once the package has been successfully installed. 6) Restart IRAF and "cd rvsao" or "cd r2rvsao". 7) Symbolically link the appropriate binary directory to bin. bin is originally linked to bin.generic for distribution. On a SPARCstation running Solaris, type cl> mkpkg ssun On a PC running Redhat Linux, type cl> mkpkg redhat On an Apple Macintosh running OS X on an Intel processor, type cl> mkpkg macintel On an Apple Macintosh running OS X, type cl> mkpkg macosx On a PC running Cygwin, type cl> mkpkg cygwin On a PC running Linux, type cl> mkpkg linux For other architectures, make a directory of the proper bin.{arch} name, and link it to bin 8) Make the package by typing cl> mkpkg update >&spool The spool file should be reviewed upon completion to make sure there were no errors. 9) Up-to-date hypertext help is available on the World Wide Web at http://tdc-www.harvard.edu/iraf/rvsao/ -Doug Mink, SAO Telescope Data Center, 2009-03-31