Report on LSST Next-generation Instrumentation Workshop, April 11, 12 2019

Understand

The Large Synoptic Survey Telescope (LSST) is a wide-field imaging system of unprecedented etendue.

• The initial goal of the project is to carry out a ten year imaging survey in six broad passbands (ugrizy) that cover $350 nm < \lambda < 1.1 \mu m$.
• This document reports on the discussions that occurred at workshop (held April 11-12, 2019 at Argonne National Laboratory) that was convened to explore concepts for using the LSST system once the initial survey is complete.
• Participants discussed the tradeoffs in science performance, cost, and uniqueness for i) imaging surveys using the initial wide-field CCD instrument, perhaps supplemented with different filters, ii) replacing the focal plane with some alternative sensor technology, and iii) converting the LSST system to a wide-field multi-object fiber-fed spectrograph.