Simulated light curve of two Cepheids under the effect of microlensing with periods 25 days (red) and 50 days (blue). Top: Case of Cepheids moving across the web of microcaustics in a portion of the Dragon with positive parity. Bottom: Same Cepheids but on the portion of the Dragon with negative parity. In both cases, the macromodel magnification is μ = 161 and the observations is assumed to be carried out in the JWST’s F200W filter (corresponding J-band in the rest frame for a Cepheid in the Dragon). For the blue curve in the bottom panel (P = 25 days and negative parity), the Cepheid is brighter than 30.5 mag 8% of the time while the red curve (P = 25 days and negative parity) is above this limit only 1% of the time.