System First Light Definition

Abstract

System First Light is an intermediate technical milestone between recording the first on-sky images with the LSST Science Camera (LSSTCam) and the start of the 10-year LSST survey. System First Light is defined as the point at which we can routinely acquire science-grade imaging across the full LSSTCam focal plane and have a well understood technical path towards meeting the Construction Completeness criteria. This document provides a technical definition of the System First Light milestone, and describes an example test dataset that could be used to verify that these criteria have been satisfied.