A Compendium of Coded Mask Designs

Skinner, G. K.; Rideout, R. M.

doi:10.1007/978-94-011-0407-4_25

Cited by 2 publications

(1 citation statement)

References 13 publications

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“…The basic elements of a coded aperture imaging system include a mask and a spatially sensitive detector upon which the mask projects a shadow containing information relevant to the image distribution. The mask may assume a variety of configurations (for example, see [2]) and still be useful for conveying the image information; however, a particular class of mask patterns known as Uniformly Redundant Arrays (URAs [3]) offers significant advantages for astrophysical applications. Point source images deconvolved from URA patterns, have flat sidelobes and are relatively free of spurious artifacts.…”

Section: Introductionmentioning

confidence: 99%

Performance of large-area CZT detectors for hard X-ray imaging

Pelling

Heindl

Matteson

et al.

2001 IEEE Nuclear Science Symposium Conference Record (Cat. No.01CH37310)

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We have developed large, monolithic CZT detectors for hard x-ray imaging applications. Detectors measure 32x32 mm 2 and 25x25mm 2 x 2mm thick. Crossed strip readout gives 0.5 mm spatial resolution. Signals are read out by four 32-input ASICs, with spectroscopic analysis performed on the anodes. Results are presented on the detectors' spatial accuracy, spectral response, and effective area. Also presented are imaging results with the detectors employed in coded mask imagers.

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Section: Introductionmentioning

confidence: 99%

Performance of large-area CZT detectors for hard X-ray imaging

Pelling

Heindl

Matteson

et al.

2001 IEEE Nuclear Science Symposium Conference Record (Cat. No.01CH37310)

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Coded-aperture x- or γ-ray telescope with least-squares image reconstruction. III. Data acquisition and analysis enhancements

Kohman

1997

Review of Scientific Instruments

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The previously described design of a cosmic x- or γ-ray telescope with least-squares image reconstruction has been enhanced to provide for mask-antimask operation. This cancels and eliminates uncertainties in the detector background. The simulations of its operation have been made more realistic by incorporating instrumental blurring of sources. A second-stage least-squares procedure determines the precise positions and total fluxes of point sources responsible for clusters of above-background pixels in the field resulting from the first-stage reconstruction. Another program converts source positions in the image plane to celestial coordinates and vice versa, the image being a gnomic projection of a region of the sky. A complete sky-to-sky simulation of the imaging of a source field is presented. It is demonstrated that the point-spread function of the overall imaging process is essentially perfect.

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A Compendium of Coded Mask Designs

Cited by 2 publications

References 13 publications

Performance of large-area CZT detectors for hard X-ray imaging

Performance of large-area CZT detectors for hard X-ray imaging

Coded-aperture x- or γ-ray telescope with least-squares image reconstruction. III. Data acquisition and analysis enhancements

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