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Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/4143
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dc.contributor.authorNayak, Arvind-
dc.contributor.authorDaiboo, Soobash-
dc.contributor.authorUdaya Shankar, N.-
dc.date.accessioned2011-08-24T05:42:59Z-
dc.date.available2011-08-24T05:42:59Z-
dc.date.issued2009-09-
dc.identifier.citationASP Conference Series, 2009, Vol.407, p426en
dc.identifier.urihttp://hdl.handle.net/2289/4143-
dc.descriptionRestricted Access. An open-access version is available at arXiv.org (one of the alternative locations)en
dc.description.abstractThe Mauritius Radio Telescope (MRT) images show systematics in the positional errors of sources when compared to source positions in the Molonglo Reference Catalogue (MRC). We have applied two-dimensional homography to correct positional errors in the image domain and avoid re-processing the visibility data. Positions of bright (above 15 σ) sources, common to MRT and MRC catalogues, are used to set up an over-determined system to solve for the 2-D homography matrix. After correction, the errors are found to be within 10% of the beamwidth for these bright sources and the systematics are eliminated from the images.en
dc.language.isoenen
dc.publisherAstronomical Society of the Pacificen
dc.relation.urihttp://adsabs.harvard.edu/abs/2009ASPC..407..426Nen
dc.relation.urihttp://arxiv.org/abs/0905.0880en
dc.rights2009 Astronomical Society of the Pacific.en
dc.titleHomography-based correction of positional errors in MRT surveyen
dc.typeArticleen
dc.additionalProceedings of the conference held 8-12 December 2008, at National Centre for Radio Astrophysics (NCRA), TIFR, Pune, India. Edited by D. J. Saikia, D. A. Green, Y. Gupta, and T. Venturi. San Francisco: Astronomical Society of the Pacific.en
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