Ultraviolet and optical light curves of SN 2024acyl. The dashed vertical line indicates the time of the o-band maximum light as the reference epoch. The vertical red lines at the top mark spectral observational epochs. The upper limits are plotted with empty symbols with arrows. The light curves for different filters are shifted with arbitrary constants, reported in the legend. The Mephisto u- and v-band data points in its unique filter system (for details see Chen et al. 2024; Yang et al. 2024) are indicated by u_M and v_M in the legend. Magnitude errors are usually smaller than the symbol size.