1 January 1981 Photon Counting 200 Channel Detector System For Spectroscopy Of Emission Line Objects
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A photon counting detector system, using a 4-stage EMI image intensifier tube followed by a lens coupled linear diode array (200 elements) with parallel outputs (each diode has its own pulse counting electronics), is described. The fast component of the phosphor decay (about 1 msec) limits the maximum linear range count rate to about 100 counts per channel and per second. This together with a dark count rate of about 10-2 counts per channel and per second leads to the rather high dynamic range of 104, which is required for the observing of emission line objects. The data handling and control functions are done by a PDP 11/34 minicomputer. In addition to the fundamental functions several supervision and test functions are integrated to monitor and compensate hardware situations which otherwise could falsify data. Some laboratory measurements are presented to demonstrate the system properties.
© (1981) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Roland Ostreicher, Roland Ostreicher, "Photon Counting 200 Channel Detector System For Spectroscopy Of Emission Line Objects", Proc. SPIE 0290, Solid-State Imagers for Astronomy, (1 January 1981); doi: 10.1117/12.965842; https://doi.org/10.1117/12.965842


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