2019 September 1

This month opened with a new spot group appeared in the N hemisphere between 10° and 15° of latitude. SDO magnetogram seems indicating that it still belongs to the 24th cycle, however after so many weeks with no sign of new activity, even this small A-class group is a welcome feature to observe and image.

The Sun of today is characterized by several fine prominences visibile on the E and W limbs, bright enough to be visible in calcium light. I imaged the most conspicuous of them that were also beautiful to see in my Quark Chromosphere. Seeing wasn’t good, unfortunately, when I turned the scope toward the above mentioned active region, I have only been able to take a poorly resolved image of it in H alpha and K line.

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