Performance of high resolution decoding with multianode microchannel array detectors

David B. Kasle; Elliott P. Horch

doi:10.1117/12.140867

22 January 1993 Performance of high resolution decoding with multianode microchannel array detectors

David B. Kasle, Elliott P. Horch

Proceedings Volume 1764, Ultraviolet Technology IV; (1993) https://doi.org/10.1117/12.140867
Event: San Diego '92, 1992, San Diego, CA, United States

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.

Citation Download Citation

David B. Kasle and Elliott P. Horch "Performance of high resolution decoding with multianode microchannel array detectors", Proc. SPIE 1764, Ultraviolet Technology IV, (22 January 1993); https://doi.org/10.1117/12.140867

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