The Dutch Observatory

November 18, 2018 on 11:41 am | In Sun | Comments Off

Clear skies again with good seeing.  Solar Activity remains Very Low as AR2727 is still very distinctly visible.  It covers 60 millionths and contains 3 spots.  The small region from yesterday is still a bit visible in CaK but I did not see it in Ha or 540nm.  I did capture this area together with few small filaments but could not make it out.  The magnetogram shows that it is/was  a Cycle 25 plage.  Proms were just at the surface level and not distinct.