A Southern Spectroscopic Survey Instrument
Both the Elmegreen report and the Kavli/NOAO/LSST "Maximizing Science" report have identified wide-field, highly-multiplexed spectroscopy on as large a telescope as feasible to be a key capability to take advantage of the capabilities of LSST, as well as training photometric redshifts to increase the value of the LSST dataset itself. The DOE Cosmic Visions process has similarly identified a Southern Spectroscopic Survey Instrument designed to complement LSST as a priority. Just as SDSS spectroscopy complemented SDSS imaging, a wide field spectroscopic capability optimized for complementing LSST has the potential to make major contributions to a wide variety of science.
Proposed by Jeffrey Newman (University of Pittsburgh)