Left: 5σ detection limits measured in the Y2,J2,H2, and K1 filters using a KLIP analysis, with a number of subtracted modes that vary to maximize the algorithm throughput. Right: conversion of these detection limits into physical units using the known distance of the GJ 758 system (15.76 pc) and the AMES-COND evolutinary tracks (Baraffe et al. 2003), calculated in the IRDIS filters. Two sets of curves assuming the two extremes of the system age range (1 and 6 Gyr, see Sect. 4) are displayed. The limits for the nominal age of 3 Gyr lie in-between, slightly closer to the 6 Gyr limit than the 1 Gyr limit.