The Dutch Observatory

December 20, 2019 on 10:42 am | In Sun | Comments Off

Clouds and contrails started moving in.  Another Spotless  day. And today with 37 days, we surpassed the longest spotless streak since solar max. so far. So now we are on the road to the next milestone, the 3rd longest spotless streak from the last solar min. at 44 days. .  Let’s see if we can reach that.  Today is also the 639th spotless day since the solar maximum.  A few filaments in Ha in the Ne and NW and the reverse polarized area is still nicely visible not far from the NE limb.