Eric: not much to report relative to last week. The simulations from Karl are quite circular (central location) so there's almost zero big rotation of polarization. Karl created two GRASP sims for horns that are farther off-axis, at a more realistic location for 150
GHz feeds, to see if there's any visible effects. First sim, beam was off-center, there was a 5 arcminute offset. The second contained no data. Eric emailed Karl. Shaul to also follow up.