The DEIMOS Spectrograph and the DEEP2 Redshift Survey

Marc Davis
Univ of California, Berkeley

DEIMOS, a 2nd generation spectrograph for the Keck-II telescope, is nearing
completion and will be delivered to Mauna Kea in mid 2001.  Once
operational, a consortium of astronomers will begin a massive survey that
will require more than 100 nights to complete.  Our goal is to observe >50,000
galaxies with photometric redshift Z>.7 in order to study the evolution of
properties and the clustering of galaxies.  The instrument will operate at
resolution R~5000, and we intend to obtain internal linewidths of a
sizeable fraction of our target galaxies.  I shall describe the instrument
and the science projects we intend to pursue with DEIMOS.  The survey will
facilitate several novel cosmological probes, including a sensitive measure
of the equation of the state parameter, w=P/\rho.