The normal HMI synoptic maps have missing points at the poles, so can't be used for PFSS extrapolations. The HMI example in the pfsspy example gallery should be updated to use the polar filled data (see https://arxiv.org/pdf/1801.04265.pdf for more info).
The normal HMI synoptic maps have missing points at the poles, so can't be used for PFSS extrapolations. The HMI example in the pfsspy example gallery should be updated to use the polar filled data (see https://arxiv.org/pdf/1801.04265.pdf for more info).