Positively constrained imagery for rotation collimators

Details Positively constrained imagery for rotation collimators Positively constrained imagery for rotation collimators

Dec 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976ap%26ss..45..383m&link_type=abstract

Astrophysics and Space Science, vol. 45, Dec. 1976, p. 383-389.

Astronomy and Astrophysics

Astronomy

Collimators, Image Enhancement, Signal Processing, X Ray Stars, X Ray Telescopes, Algorithms, Fourier Transformation, Imaging Techniques, Rocket-Borne Instruments, Rotating Bodies, Satellite-Borne Instruments, X Ray Astronomy

Scientific paper

Problems with reconstructing images of X-ray stars from information obtained with rotation collimators are discussed. Algorithms are presented for reconstructing a family of non-negative pictures that are rigorously consistent with the information measured by rotation collimators. These algorithms require that the data be complex and Hermitian; it is strongly recommended that complex data be made available by employing a rigidly connected pair of almost identical collimators whose only difference is a quarter bar shift. The proposed reconstruction technique is demonstrated using the example of a solitary source and some variations of the technique are outlined.

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