high resolution imaging using LOFAR
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23-07-2010, 03:40 PM

I am presently in 3rd electronics and communication
i want a presentation on high resolution imaging using LOFAR
PLZ i want it for my seminar and presentation
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Joined: Sep 2010
22-09-2010, 04:32 PM

some brief Information About high resolution imaging using LOFAR:==

Actually lofer is the processing of the data started with automatic removal of radio frequency interference. The initial model for the calibration consisted of two point sources, representing the two hotspots of the radio source. The hotspots are the two bright objects visible in the right panel of the image. The model was subsequently refined using the technique of selfcalibration. The final image has an impressive resolution of 9.7 by 9.4 arcsec by making use of uniform weighting (which optimizes the resolution of the image) . The HBA image was made using only one subband at 173 MHz. This is only a small fraction of the available data for the 60 hour observation. A next step will be to combine all available subbands to create an even better image.

For comparison, images of 3C61. 1 from other radio telescopes are shown. The VLSS 74 MHz image was made with the Very Large Array (VLA), New Mexico (USA). The VLA 1.5 GHz image is from Leahy & Perley (1991, AJ, 102, 537). The WENSS survey was carried out with the Westerbork Synthesis Radio Telescope located not far away from the central core of LOFAR.

refered by :: =lofarhigh-resolution-lofar-image-3c611

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