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Proceedings Paper

Two-Dimensional Ultraviolet Imagery With A Microchannel-Plateiresistive-Anode Detector
Author(s): Chet B. Opal; Paul D. Feldman; Harold A. Weaver; Joseph A. McClintock
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Paper Abstract

We have designed an imaging ultraviolet detector for use with a precision pointed telescope flown on a sounding rocket. Resolution of better than 80 microns over a field of 5 mm has been achieved. The ultraviolet image is converted to electrons at the front surface of a CsI coated chevron michochannel-plate electron multiplier. For each photoelectron, the multiplier produces a burst of about 3 x 106 electrons, which impinges on a tellurium-coated resistive anode with four evaporated hyperbolic readout electrodes. The sizes of the four resulting output pulses are digitized to 10 bit accuracy and telemetered to the ground, where they are divided in pairs to give the x and y coordinates of the photoelectron event. The coordinates are used to generate a picture in real time, and are recorded for computer processing later. The detector was successfully flown in December 1978. Good images of Jupiter and Capella in hydrogen Lyman alpha emission were obtained.

Paper Details

Date Published: 3 May 1979
PDF: 4 pages
Proc. SPIE 0172, Instrumentation in Astronomy III, (3 May 1979); doi: 10.1117/12.957096
Show Author Affiliations
Chet B. Opal, Naval Research Laboratory (United States)
Paul D. Feldman, The Johns Hopkins University (United States)
Harold A. Weaver, The Johns Hopkins University (United States)
Joseph A. McClintock, The Johns Hopkins University (United States)


Published in SPIE Proceedings Vol. 0172:
Instrumentation in Astronomy III
David L. Crawford, Editor(s)

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