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Fig. 1

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Images of NGC 891 at various wavelengths, centred on the galaxy’s coordinates from NED: , (J2000.0). Each image is presented in its native resolution and pixel size, with the open symbols at the bottom left of each panel indicating the beam size at each wavelength. The image characteristics are described in detail in the text (see Sect. 2). The solid white ellipse denotes the aperture for integrated photometry and the dashed white circles represent the apertures to reconstruct the analysis of Dupac et al. (2003b), as described in Sect. 4.4. North is up and east is to the left.

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