| This site makes available spectra of z > 2
quasars taken over a number of years at the Keck telescopes with the
high resolution HIRES
spectrograph and, when it became available, the lower resolution ESI
These spectra were taken for a number of programs to investigate
properties of the intergalactic medium at high redshift. The ESI
spectra have uniform coverage from 4,500 to 10,000 Angstroms;
the wavelength coverage of the HIRES spectra is variable, usually
covering the Lyman alpha forest, or the CIV forest, but not both.
Details are given on the appropriate page.
Please report any problems with the site by email to
This material is based upon work supported by the National Science Foundation under Grants No. AST00-98480 and AST06-07871.