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Fig. 7

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Schematic diagram describing the procedures used to make a weight map for an individual frame obtained from a single pointing observation. The first panel a) is a sample image containing a bleeding trail and a bright source whose center is disrupted. The second panel b) shows the regions to be masked. The third panel c) represents the number of rejected frames during the stacking procedure. Each pixel has an integer value ranging 0 to 3. The last panel d) is a weight map to be used for the final mosaicking procedure.

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