Image Analysis with CASA - ESO

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Other IA tasks in <strong>CASA</strong> imtrans – reorder the axes of an image Ex: [RA, Dec, freq] to become [freq, RA, Dec] imcollapse – collapse image along one or more axes by aggregating pixel values along that axis Fonction to compute aggregation of pixel values: mean, median, rms, max, ... 20
Working <strong>with</strong> spectral data cube Extract spectra Subtract continuum – imcontsub Moments images – immoments Spectral lines identification – slsearch Spectral line fitting – specfit 21
Page 1 and 2: Image Analysis with CASA Sebastien
Page 3 and 4: View images Extract information fro
Page 5 and 6: Working with images: General tasks
Page 7 and 8: Viewer CASA> viewer and then use th
Page 9 and 10: Header hdkey for reference beammaj
Page 11 and 12: Defining box / region - Command lin
Page 13 and 14: Image Statistics imstat : calculate
Page 15 and 16: Mathematical operations on images i
Page 17 and 18: Smooth images imsmooth - Image conv
Page 19: If only 1 Gaussian component (defau
Page 23 and 24: Extract a spectrum - Script mode Us
Page 25 and 26: Moments Images Sometimes, informati
Page 27 and 28: Spectral Lines Search 1) Use SPLATA
Page 29 and 30: ToolKit For (very?) advanced users,

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