A Guide to Sunspot Magnetic Field Configuration

This guide is focused on sunspots observed using the Helioseismic and Magnetic Imager (HMI) instrument aboard the Solar Dynamics Observatory (SDO). There are eight magnetic field configurations in Hale Classification of sunspots/magnetic field configurations. In the first column are example images of sunspots from 2023-2024; on the left hand side are HMI Continuum (yellow) for sunspot images and on the right hand side are the HMI Magnetogram (grey) showing the magnetic field configuration images of the sunspots. The second column contains information on a description/identification and any additional information of each sunspot class.

Solar Magnetic Field Configuration



(29-Jan-2025, initial version by Rhiannon Fleming)
(06-Mar-2025, modified to this hand written version by Aki Takeda)