Telemetry is collected from the transputer links and temporarily stored into the dual-port memory to be sent to the connected Workstation on the Telemetry channel. Image data are read from the dual-port memory and sent to the Workstation over the data channel. The middle section of the M2-M3 rack mounted at the telescope center piece. The power section of the M2-M3 control rack. This figure shows the window for the user-side active optics control software.
Some further windows handle specific operations.
CCD Cameras CCD cameras are controlled by the VME devoted to the active optics system. Its hardware and software configuration have been described in the above section. Here we describe what was implemented specifically to handle exposures and images. On the VME side, a specific task retrieves every new images and sends them, if explicetely requested, to the WorkStation via the data link. On the VME bus a PC board is installed where a Windows application runs, as an interface with the cameras.