Left panel: high-resolution K-band image of the field around the proposed exciting sources of MHO 1502. The dark red cross indicates the position of IRAC 18064, which is associated with MHO 1502. Right panel: high-resolution K-band image of the field around the suggested driving star of MHO 2147. The blue and green crosses mark the location of ‘source A’ (only detected in the K and H₂ bands) and abright source at 24 μm, respectively. Both these sources were identified by Varricatt (2011) and are related to IRAS 17527-2439. The white bar in both panels shows the FWHM of IRAC/Spitzer (Fazio et al. 2004) as a reference. The flux scale is shown to the right and is calibrated in units of 10⁻⁸ Jy.