This spectacular image of the large spiral galaxy NGC 1232 is based on three exposures in ultra-violet, blue and red light, respectively. The colours of the different regions are well visible : the central areas contain older stars of reddish colour, while the spiral arms are populated by young, blue stars and many star-forming regions. Note the distorted companion galaxy on the left side, shaped like the greek letter "theta".
The edge of the field shown corresponds to about 200,000 light-years, or about twice the size of the Milky Way galaxy.
The Daily Galaxy via eso.org