22 January 1993 Performance of high resolution decoding with multianode microchannel array detectors
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Abstract
The multi-anode microchannel array (MAMA) is a microchannel plate based photon counting detector with applications in ground-based and space-based astronomy. The detector electronics decode the position of each photon event, and the decoding algorithm that associates a given event with the appropriate pixel is determined by the geometry of the anode array. The standard MAMA detector has a spatial resolution set by the anode array of 25 microns, but the MCP pore resolution exceeds this. The performance of a new algorithm that halves the pixel spacing and improves the pixel spatial resolution is described. The new algorithm does not degrade the pulse-pair resolution of the detector and does not require any modifications to the detector tube. Measurements of the detector's response demonstrate that high resolution decoding yields a 60% enhancement in spatial resolution. Measurements of the performance of the high resolution algorithm with a 14 micron MAMA detector are also described. The parameters that control high resolution performance are discussed. Results of the application of high resolution decoding to speckle interferometry are presented.
© (1993) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
David B. Kasle, David B. Kasle, Elliott P. Horch, Elliott P. Horch, } "Performance of high resolution decoding with multianode microchannel array detectors", Proc. SPIE 1764, Ultraviolet Technology IV, (22 January 1993); doi: 10.1117/12.140867; https://doi.org/10.1117/12.140867
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