Transient detection rate per unit mass for stellar populations at different ages with a metallicity of 0.5 Z_⊙ and A_V = 0, calculated with Eq. (1) under the magnification map of Warhol from Palencia et al. (2025). Blue curves show the detection rate in the HST F200LP filter (detection limit of 30 m_AB); red curves show the detection rate in the JWST F200W filter (detection limit of 29.7 m_AB). Solid and dotted lines show the case of a Kroupa IMF and a top-heavy IMF, respectively.