A rogue sunspot

Sky at Night Magazine - - INTERACTIV­E -

Sunspots are un­usual in th­ese days of so­lar min­i­mum, but this one (AR2720) is even more un­usual in that it is not only large, but also strange as its mag­netic po­lar­ity is re­versed. The north and south ends of its mag­netic field are back­wards com­pared to the norm for sunspots in the cur­rent so­lar cy­cle, So­lar Cy­cle 24. Could it be the first big sunspot of the next so­lar cy­cle, So­lar Cy­cle 25? The im­age was taken at 09:11 BST on 25 Au­gust, 2018 from the ‘win­dowsill ob­ser­va­tory’, Nail­stone, Nuneaton, with a Lunt LS35THa and a Bresser MikrOku­lar full HD cam­era, a fo­cal re­ducer for the disc and a 2x Bar­low lens for the de­tail. Roger Sam­worth, Nuneaton

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