Spectra of 133P/Elst-Pizarro obtained with the TNG and WHT telescopes. Spectra are normalized to unity at 5500 Å and shifted vertically by 0.3 for the sake of clarity. The spectrum obtained on June 16 with the WHT (middle one) does not cover the whole spectral range (there is a “hole” between 5400 and 6200 Å), in this case both parts (red and blue arm) are scaled using TNG spectrum obtained in the same night.