Radio Imaging and CLEAN - NRAO
Radio Imaging and CLEAN - NRAO
Radio Imaging and CLEAN - NRAO
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Deconvolution Algorithms<br />
• <strong>CLEAN</strong> (Högbom 1974)<br />
– assumes T(l,m) is a collection of point sources<br />
– multi-scale <strong>CLEAN</strong> relaxes this assumption<br />
• Maximum Entropy (Gull & Skilling 1983)<br />
– assumes T(l,m) is smooth <strong>and</strong> positive<br />
• Beam shape<br />
– needed to deconvolve image<br />
– atmospheric seeing can modify effective beam shape<br />
Sunday, January 22, 2012<br />
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