This is .pkg installer for STSDAS 3.3 for MacOS X. This creates the /iraf/extern/stsdas directory and installs the proper files. You will still need to edit the extern.pkg file. Instructions are included. This should work in Tiger now, and Panther too. If you are upgrading from STSDAS 3.2 or earlier, you probably want to delete or rename the existing stsdas folder in extern first. The installer will not pay heed to any old files so beware if you have customized any files in your stsdas directory. The installation shouldn't touch anything outside of /iraf/extern/stsdas. Direct questions about this installer to Marcos Huerta marcosh@rice.edu 5-9-2005