North is up and east is to the left. The field of view is approximately 3' x 1.5'. The polarization pattern is complex, well-resolved and exhibits many features characteristic of multiple scattering models in a dusty nebula with an evacuated, bipolar cavity. For this reason, fitting all the polarization vectors to a centrosymmetric pattern is shown to be flawed, and can actually cause errors in positional estimates. The 0,0 position corresponds to HW-2.
North is up and east is to the left.
A total of 48 minutes of integration time was used in this image which 45 seconds of on-chip integration time represented by the contours. There is a small region of missing data in the lower right corner due to an imperfect mosaic. H image of Cep A, same attributes as Figure 1. A total of 28 minutes of observing time was used with 15 or 20 second on-chip integrations. There is a small region of missing data in the upper right corner due to an imperfect mosaic.