Dual beam mapping with a maximum entropy algorithm

Details Dual beam mapping with a maximum entropy algorithm Dual beam mapping with a maximum entropy algorithm

Jan 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992mnras.254..165r&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 254, Jan. 1, 1992, p. 165-176.

Astronomy and Astrophysics

Astronomy

23

Astronomical Maps, Maximum Entropy Method, Image Reconstruction, Millimeter Waves, Point Spread Functions

Scientific paper

The dual beam mapping problem identified as a linear inversion problem has been solved using the maximum entropy method. The algorithm deconvolves a general beam function from the data and simultaneously accounts for the rotation of the local coordinate system. The new algorithm makes a clear distinction between image and data space, which makes general and consistent image reconstruction possible: separate dual beam maps of the same patch of sky can be combined into a single image; arbitrarily small image pixels can be used; and total power observations of the source can be straightforwardly incorporated into the mapping algorithm to constrain the absolute flux level in a region of the image.

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