AR12253 - Growing Active Region In CaK Light - 2nd January
Active region ar12253 really has been getting bigger over the past couple of days, and now has the potential for M class flares as it rotates towards Earth to become geoeffective. Throw in a couple of brightish proms on the limb and this made for a nice view. Taken with the 40mm scope at 700mm focal length with the DMK31 camera and homebrew CaK filter.