Aitoff projection of the sky in Galactic coordinates; the area used to search for the Cetus stream is represented in grey. The region near the Galactic disc (|b|< 10°), within the dashed lines, is excluded from the search because of the high extinction and the large number of contaminant disc stars. The blue lines correspond to the orbits of the stars from the Cetus spectroscopic sample used to find the plane of the Cetus stream. The current location of these stars is indicated by the orange stars.