Final reduced composite image of a wider field around ϵ Eri, at both 3.6 μm (left) and 4.5 μm (right). All significant point sources have detectable flux in both channels, while planets in the system would only be detectable in the 4.5 μm channel. In the outer ranges of the image where PCA-based subtraction has not been applied, the imperfect background removal from a simple median subtraction leads to an asymmetric background distribution between the upper right and lower left sections of the image.