The Observatory does not provide or maintain data reduction software for most of its instruments. For echelle format data which is nontrivial to reduce, however, we try to maintain some type of facility for at the least quick look reductions.

ESIRedux
Jason X. Prochaska's IDL-based reduction package.

MAKEE
Tom Barlow's highly automated reduction program, originally used for HIRES data at Keck. It is now available for ESI as well.

IRAF
We recommend Sandra Castro's excellent Web page. This is a work in progress, and neither she nor The Observatory should be held accountable for errors. Other observers may also find that different parameters work better for their data.