Space Telescope Science Data Analysis Software Package

  analysis + Data analysis packages.
   apropos - List all the tasks related with a given subject.
   contrib + User-contributed software.
  describe - Display a description of the named task(s) or package(s).
  examples - Print online examples of how to use the named task(s). 
    fitsio + FITS input/output for Space Telescope data (images and tables).
  graphics + Graphics and image display packages.
 hst_calib + HST Science Instrument calibration packages.
 sobsolete + Package of tasks that have been retired.
   playpen + Miscellaneous experimental tasks.
  problems - Submit an STSDAS software problem report to STScI.
   toolbox + General tools packages.