Relation between the de-lensed absolute UV magnitude M_UV of the GLIMPSE F090W dropouts selected in this work and their SL magnification μ. Beyond M_UV = −16, we need magnification to detect these objects. This is shown by the grey area, which is the minimum magnification required for a 5σ detection at z = 7 to 9 with F115W, our deepest band (see Atek et al. 2025). The top and right histograms show the normalised distribution of M_UV and μ for each redshift bins.