Empirical relation for seeing correction in size measurement. We used Sérsic models with Sérsic indices of n = 2, 3, 4, and 6. We fit the points for n = 3 with a fourth-order polynomial function to construct the relation. The dashed line indicates ﹩{R}_{\mathrm{eff}}={R}_{\mathrm{eff}(\mathrm{convolved})}.﹩