Relative photometry of the NACO epochs for each band calibrated/aligned to epoch 1 based on stars within 4″ of MOA-2007-BLG-192.The black points are constant stars, so their scatter gives an estimate of the error. The red dashed line marks the expected magnitude difference of the target assuming no light from the lens is detected. The red diamonds show the flux changes of the target, which are inconsistent with such a scenario at a 3 − σ level for J and even with higher significance for our best data set in K band. The poor quality of the epoch 2 H band data as evident by the large scatter does not provide any useful constraint. Table 2 gives the derived values for all bands and different choices of the field of comparison stars.