27 June 2006 LSST camera control system
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Abstract
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 CCS comprises a set of modules (nominally implemented in software) which are each responsible for managing one camera subsystem. Generally, a control module will be a long lived "server" process running on an embedded computer in the subsystem. Multiple control modules may run on a single computer or a module may be implemented in "firmware" on a subsystem. In any case control modules must exchange messages and status data with a master control module (MCM). The main features of this approach are: (1) control is distributed to the local subsystem level; (2) the systems follow a "Master/Slave" strategy; (3) coordination will be achieved by the exchange of messages through the interfaces between the CCS and its subsystems. The interface between the camera data acquisition system and its downstream clients is also presented.
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Stuart Marshall, Jon Thaler, Terry Schalk, Michael Huffer, "LSST camera control system", Proc. SPIE 6274, Advanced Software and Control for Astronomy, 627422 (27 June 2006); doi: 10.1117/12.673226; https://doi.org/10.1117/12.673226
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