Trailed spectrum of He II line (4685.68 Å) build with eight spectra from the time series of September 5, 1995. The He II emission is visible from φ ∼ 0.927 to φ ∼ 0.937 (two consecutive spectra) as a short bright vertical spindle despite the weak signal. The He II emission follows the He I λ5875.66 first emission, which occurred between φ ∼ 0.906 − 0.925, as expected. The vertical white line indicates He II laboratory wavelength.