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Fig. A.1.


NGC 4217 rotated by 40°, same scale. Top: artificial optical B-band image created by combining the u and g filters from SDSS, sharpened by unsharp masked filter of GIMP. Middle: Hα image (Rand 1996), with edge detection filter applied using GIMP. Bottom: C-configuration C-band radio map intensities shown above 3σ-level (9μJy.)

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