Centre of G319.88+00.79. a) Colour image with – in red, green, and blue, respectively – the 4.5 μm emission, the K 2MASS emission, and the SuperCOSMOS Hα emission of the ionized gas (linear units). b) Colour image with 5.8 μm, 3.6 μm, and K 2MASS, in red, green, and blue, respectively (linear units). The 250 μm blue contours are projected on the colour image (levels of 1000 to 7000 MJy/sr by steps of 1000 MJy/sr). The exciting star is identified. The beam of the 250 μm image is at the lower left. c) The radio continuum blue contours from the SUMSS survey at 843 MHz (emission of the ionized gas; levels of 0.010, 0.025, 0.050, 0.100, 0.200, and 0.300 Jy/beam; the SUMSS beam is at the lower left) are projected on the previous colour image. Inset: 2MASS J-band image of the exciting cluster (logarithmic units); the exciting star that appears elongated is probably double.