Camera Data Acquisition for the Large Synoptic Survey Telescope

The Large Synoptic Survey Telescope (LSST) is a proposed ground-based 8.4-meter telescope operating in the visible band. The LSST Camera Control System (CCS) will manage the activities of the various camera subsystems and coordinate those activities with the LSST Observatory Control System (OCS). The most demanding component of the CCS is the Science Array Data Acquisition Subsystem (SDS). Its principal responsibilities are to receive science data from the camera, perform cross-talk correction, reorganize, buffer and, finally, distribute these data to down stream clients. SDS will use System on Chip (SoC) technologies and high speed protocols like 10 Gb Ethernet. This paper will describe the SDS requirements, its conceptual design and the current development status.