Multi-resolution imaging and spectra of extended sources |
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| Institution: | 1. Department of Chinese Medicine Information Science, Beijing University of Chinese Medicine, Beijing 100029, PR China;2. National Institutes for Food and Drug Control, Beijing 100050, PR China;3. Beijing Key Laboratory of Chinese Medicine Manufacturing Process Control and Quality Evaluation, Beijing 100029, PR China;4. Beijing Tcmages Pharmceutical Co. LTD, Beijing 101301, PR China;1. Department of Physics & Astronomy, Wayne State University, 666 W. Hancock Street, Detroit, MI 48201, USA;2. Department of Physics & Astronomy, Georgia State University, Atlanta, GA 30303, USA;3. MIT Kavli Institute for Astrophysics and Space Research, Cambridge, MA 02139, USA |
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| Abstract: | I introduce a straightforward technique for the filtering of extended astronomical images into components of different spatial scales. For a positive original image, each component is positive definite, and the sum of all components equals the original image. In this way, the components are each individually suitable for flux measurements and broadband spectra calculations. I present an illustration of this technique on the radio galaxy Cygnus A. |
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