CAFOS spectra obtained during bright (φ = 0.92−0.95) and faint phases (φ = 0.31−0.37) a few weeks prior to Obs2. The spectrum displayed in blue was obtained at phase 0.18 with atomic emission lines subtracted. It shows modulations that were identified with cyclotron harmonics indicated by arrows. Hydrogen Balmer, HeI, and HeII lines are prominent. The feature indicated with a cross is an atmospheric line; the spectra have not been corrected for them.