Top: images of the Vela environment at the nine Planck frequencies (Table 1), increasing from 30 GHz at top left to 857 GHz at bottom right. Each image is 400′ on a side, with galactic coordinate orientation, centred 1° north of Vela-X. Bottom: microwave SED of Vela. Filled circles are Planck measurements from this paper, with 3σ error bars. The open symbol at 1 GHz is from the Green catalogue, and the dashed line emanating from it is a power law with spectral index from the Green catalogue. Downward arrows show the Planck high-frequency flux density measurements that are contaminated by unrelated foreground emission.