Galactic pick up had been observed with Planck at the highest frequencies with HFI and at the lowest frequencies with LFI.
Maurizio says that the LFI dipole had been convolved with expected sidelobes from the GRASP model. Jacques is not sure about the HFI case.
There is some discussion about the relative comparison of the expected sidelobe pickup for Planck and PICO by the galaxy. This will likely go into the report.
There is also some discussion about whether PICO should have an extra black baffling around the primary to limit the spill-over around the primary.
The Planck references are the Tauber etal 2010 optics paper, and the Planck 2013 calibration paper.