Left: stellar continuum image constructed from the LBT data with the regions marked for closer analysis. The right ascension (RA) and declination (Dec) of each region is listed in Appendix C. Middle: emission of the Hα_[N II] sub-band observed with the LBT, which provides the basis of the choice of regions. Right: observed area as imaged by a Subaru telescope and a Hubble Space Telescope WFC3 composite colour image (based on the image processed by Robert Gendler and Judy Schmidt).