PUNCH polarimetry


PUNCH extends polarimetric analysis to 180 Rs from the Sun. Polarization techniques have been demonstrated with coronagraph data (de Koning and Pizzo 2011), but have been limited by signal to noise ratio with existing instruments and by front-back ambiguity from the narrow field of view. Wide-field, low-noise imaging with PUNCH overcomes both of these problems, and permits unambiguous 3D location of each detected feature as it propagates. See also DeForest et al., 2017.