Previous Page: IPCS
Next Page: System control
In addition to the detectors themselves, the data acquisition system on the WHT includes a Detector Memory System (DMS). This is an image processing system based on the VME bus architecture and using a 68020 microprocessor. Once data has been acquired using a detector, it is transferred into the DMS. In the case of a CCD this transfer occurs when the CCD is read out. In the case of the IPCS the coordinates of each photon event are transferred into the DMS as it is detected, and the data accumulated in the DMS to produce an image.
Once the image data is in the DMS, it can be displayed on a local colour image display for immediate assessment. Finally, it can then be transferred over a high speed link to the VAX computers for archiving and further assessment.