Increasing the number of steps in which we compute the transmittance increases the accuracy of the computed light curve. The legend indicates the number of transmittance maps, N_𝒯, used, as well as their difference to N_𝒯 = 20 and the corresponding standard deviation. The standard deviation for N_𝒯 = 8 is less than 1 ppm and is therefore an acceptable number compared to current instrumental errors (Rustamkulov et al. 2023). The 2D study case was used for this experiment (Table1).