The Department of Astrophysical Sciences at Princeton is involved in building the hardware and software for a number of astronomical instruments: LSST (link is external), HSC (link is external), PFS (link is external), CHARIS (link is external), HATPI (link is external), and TESS (link is external), we also expect to be involved in both the imaging and coronographic channels of WFIRST. Starting with its work on the Sloan Digital Sky Survey, Princeton astrophysics has developed one of the strongest astronomical software groups in the world, and is currently playing major roles in several large survey projects. The National Science Foundation's LSST project is building an 8.4-m telescope at Cerro Pachon in Chile with a 3.2-Gigapixel camera, which can image the entire accessible sky every 3 nights. Over the course of its 10-year survey, it will image 18,000 deg of high-latitude sky to r27.5 mag, discovering hundreds of thousands of asteroids, mapping the structure of the Milky Way, and measuring the distribution of dark matter. Michael Strauss and Robert Lupton spend a lot of their time working on LSST: Michael is the chair of the LSST Science Advisory Committee and Robert is the lead for pipelines and algorithms within the data management group, both are members of the LSST's Project Science Team. Astronomical Software Specialist Jim Bosch is the lead for LSST's yearly processing, working with about 10 other astronomical software scientists in Peyton Hall to construct the pipelines that will produce calibrated photometric and shape catalogues.