Top left: lightly smoothed RGB XMM-Newton EPIC image of IKT 16 (R = 0.3−0.8 keV, G =  0.8−1.2 keV, B =  1.2−2.0 keV). The two regions marked are those used for spectral analysis for the SNR (white circle) and the bright source (black circle). The centre of the remnant is marked with a cross. The image is binned in 4′′  ×  4′′ pixels, and is displayed logarithmically with a dynamic range of 20. Top right: MCELS [S ii]/Hα ratio of IKT 16. The image is binned in 2′′  ×  2′′ pixels. The white circle indicates the extent of the SNR. Bottom left: lightly smoothed soft X-ray image (0.3−1 keV) overlaid with high-resolution 20 cm (1400 MHz) ATCA radio contours. The contours are at levels of 0.07, 0.14 and 0.28 mJy beam^-1. The X-ray image is displayed logarithmically with a dynamic range of 20, and the X-ray colour bar is shown in units of log(pn+MOS) ct/pixel/20 ks. Bottom right: soft X-ray map overlaid with 3 cm (8640 MHz) ATCA radio contours. The contours are at levels of 0.25, 0.5 and 1.0 mJy beam^-1. The beam sizes for the radio observations are shown in Table 2.