15 October 1997 Arc-second source positions with a prototype BASIS imaging system
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The burst and all-sky imaging survey (BASIS) project is a proposed small explorer (SMEX) mission to image the gamma-ray sky in the 10 - 150 keV energy range with high angular and energy resolution. It will be able to determine the locations of gamma-ray bursts (GRBs) to within a few arcseconds, sending accurate positions to ground-based telescopes for simultaneous and follow-up observations within seconds of the beginning of the GRB. It will also produce all-sky maps with 30 arcsecond resolution and 2 milliCrab sensitivity. The instrument uses a two-scale coded aperture mask to modulate gamma-rays falling on a cadmium zinc telluride (CZT) detector plane consisting of both 100 micrometer pitch strip detectors and 4 mm square spectroscopy detectors. The spatial pattern of gamma-rays will be deconvolved with the mask pattern to produce an image. This paper presents results from a prototype of this system, using a mask and strip detectors to produce an image of a radioactive source. The prototype functions as expected, producing images which, when scaled to the dimensions of the proposed instrument, achieve the desired resolution.
© (1997) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
David M. Palmer, David M. Palmer, Ann M. Parsons, Ann M. Parsons, Peter Kurczynski, Peter Kurczynski, Louis M. Barbier, Louis M. Barbier, Scott D. Barthelmy, Scott D. Barthelmy, Lyle M. Bartlett, Lyle M. Bartlett, Edward E. Fenimore, Edward E. Fenimore, Neil A. Gehrels, Neil A. Gehrels, John F. Krizmanic, John F. Krizmanic, Derrick C. Mancini, Derrick C. Mancini, Carl Michael Stahle, Carl Michael Stahle, Jack Tueller, Jack Tueller, Bonnard J. Teegarden, Bonnard J. Teegarden, } "Arc-second source positions with a prototype BASIS imaging system", Proc. SPIE 3114, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy VIII, (15 October 1997); doi: 10.1117/12.283784; https://doi.org/10.1117/12.283784

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