NGC 4565 images in the wavelength ranges studied in this work with our custom-made mask in shaded black. From top to bottom: co-addition of the optical g, r, and i band images using our observed data from WHT; NUV image from GALEX; FUV image from GALEX; Hα narrow-band image from observations with the INT; and an H I integrated intensity map from the VLA. The radial location of the disk edge of NGC 4565 is almost the same in all wavelength ranges.