Example of the deconvolution procedure for unresolved sources in IRAC images. After the deblending, the unique IRAC source (irac164074) becomes two separate sources (irac164074 _1 and _2). Top left (a): IRAC 3.6 μm image (0 61 pixel ⁻¹) showing a blended source. The red circle depicts a 2'' radius aperture (our default aperture for isolated sources). The green circles show 0 9 apertures centered at the positions of sources in the reference image. Top right (b): HST/ACS reference image (0 02 pixel ⁻¹) after applying a 4′ × 4′ local WCS re-alignment, showing the individual sources. Bottom left (c): model of the blended source obtained by convolving the PSF of HST/ACS to the PSF of IRAC 3.6 μm in (b), registering it to image (a) and scaling each source to the flux in the 0 9 apertures (green) in (a). Bottom right (d): residual from the subtraction of the model and science images (c–a).