Lighthouse Nebula region in the H-α narrow band (continuum subtracted). Overplotted are the X-ray contours from the mosaic image in Fig. 1. At the bottom of PSR J1101-6101 a bright field star was masked with a MOS occulting bar. The diffuse emission is likely unrelated to the Lighthouse Nebula, and prevents detection of any possible emission from a bow-shock in front of PSR J1101-6101.