Penumbra profile Iz(r) for several serrated occulters with 20 mm teeth in logarithmic scale in the range r ≤ 200 mm. Red shows Nt = 64. Blue shows Nt = 384. Green represents Nt = 784. Yellow plots Nt = 1024. Black showsthe sharp-edged disk. The black dashed line represents the apodized disk.