Sunday 7 April 2019

AR12737 in Ha Departing 6th March

In a week this little active region started as an emerging flux region, developed into an active region with a number of small spots, and by now was decaying. This shot was taken as it approached the eastern limb with the SM90 double stacked with a daystar Quark.  Seeing was far from ideal, and this image was by far the best of a number that was taken.