HST/ACS images of IRAS 0833 in the ultraviolet (filter F140LP, green, top left), continuum-subtracted Hα (red, top right), the composite of both (bottom left), and the composite including Lyα emission in blue (bottom right, adapted from Östlin et al. 2009). The aperture of HST/GHRS is marked with a square. The circular region R₁ (radius ~0.5″ (~200 pc)), as discussed in the text, is also marked. Intensity scale is linear, except for the last image, in which intensity scale is logarithmic. North is up and east is to the left.