Two new results on PSR 0833-45: (1) optical data on its birthplace, and (2) possible polarization in its high energy gamma-ray emission

Two new and completely different results are presented, both related to the Vela pulsar PSR 0833-45. In Part I, recent ESO optical images of the pulsar and its starfield are compared to the discovery plates, and used to set stringent upper limits on its proper motion and thus on its birthplace. Consequences are briefly explored. Part 2 refers to a search of linear polarization in the COS B > 50 MeV γ-rays, and a possible evidence for a positive effect in the case of PSR 0833-45.