Massive Sun spot group 1520 is one of the biggest of this cycle. As well as this it unleashed a huge X class flare on the 13th. This flare hurled a piece of Sun towards the Earth (coronal mass ejection or CME) which should impact about 9:15UT on Saturday 14th. This should spark displays of northern lights. My solar flare monitor captured the flare as it hit the Earth's atmosphere. Hours earlier I imaged the group with my hydrogen alpha and white light telescopes.