Charge Detector Array

A charge detector array for recording signals from a microchannel plate (MCP) in which a synchroniser circuit (14) is provided in respect of each of a plurality of channels, interposed between a respective charge amplifier and discriminator unit (12) and a counter (16), for monitoring output pulses generated in respect of the channel of interest and one or more channels adjacent thereto, and for only causing an output pulse in respect of the channel of interest to be counted if it is generated before any output pulses generated in respect of the adjacent channels, and/or its duration is greater than that of any output pulses generated in respect of the adjacent channels, thereby enhancing the resultant image.