The left red coloured image is a pure continuum image taken at a
wavelength of 443nm. It shows the dust distribution in the inner
7' x 7' area around the nucleus. In contrast to this, the right
image is taken at a wavelength of 360nm, where line emission of
OH+ is placed. Strong plasma activity is visible around
this already known dusty shells.
Both images are processed with an unsharp mask and logarithmically scaled, to show the bright and faint structures simultaneously.