PCb atmosphere detectability for a MIRECLE-like mission with three different apertures. The left panels simulate an observation with a 0.5 m telescope taken over 16 orbits of PCb (∼6 months). This observation length was chosen so that the photon noise would be comparable to that of a 2 m telescope observing for a single orbit, shown in the center column. The 16 orbit observation was phase-folded prior to analysis. The right column panels show a simulation of a MIRECLE-like mission with the same aperture as JWST, emulating a future FIR Surveyor. Enhanced detectability of phase variations in this atmosphere compared to Figure 7 is due to the expanded wavelength range of the MIRECLE instrument concept✎.