Retrieval of two-dimensional brightness distribution by iterative algorithms in the case of a limited number of scans with a knife-edge beam

Details Retrieval of two-dimensional brightness distribution by iterative algorithms in the case of a limited number of scans with a knife-edge beam Retrieval of two-dimensional brightness distribution by iterative algorithms in the case of a limited number of scans with a knife-edge beam

Jun 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989raf....32..742a&link_type=abstract

Radiofizika (ISSN 0021-3462), vol. 32, June 1989, p. 742-752. In Russian.

Astronomy and Astrophysics

Astronomy

3

Astronomical Photometry, Brightness Distribution, Light Beams, Optical Scanners, Radio Sources (Astronomy), Algorithms, Astronomical Maps, Crab Nebula, Mathematical Models, Radio Telescopes

Scientific paper

Based on numerical experiments, recommendations are given on the use of CLEAN algorithms for reconstructing two-dimensional brightness distribution for a limited number of projections. This problem is connected with the reconstruction of the detailed brightess distribution of the Crab Nebula on the basis of a small number of one-dimensional profiles of strip distributions of brigthness relating to lunar occultation of the radio source. It is shown that the CLEAN algorithm with trim contour is an effective method for solving the deconvolution problem in this case.

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