Speaker:        Andrew Sheinis
                Lick Observatory and UC Santa Cruz

Title:          "ESI, IFU's and QSO's"

Abstract:

Andy will describe ESI, the Echelle Spectrograph and Imager, recently
delivered to Keck II. Images on the sky, taken with ESI show FWHM
sizes of 34 microns (0.34 arcseconds) and are among the best images
taken in the visible to date at Keck. He will review the development
of ESI and discuss performance testing and results. Also, he will
discuss the Integral Field Unit (IFU) that he is currently developing
for ESI. IFU spectroscopy is a method to optimize the efficiency of
spectroscopic observations, allowing for detailed spectra to be taken
at every point in the field of interest with a single exposure. Lastly, 
Andy will present optical off-nuclear spectroscopy of the host galaxies 
of 4 QSOs -- red-shifts \( 0.1 \le z \le 0.3\) -- using LRIS and ESI. 
The spectra show absorption features from old stellar populations, 
extended emission-line gas and starburst regions.