Solar Activity 09 May

[brianb]

Still playing catchup (and losing ...)

Sunday May 9th was mostly cloudy with a couple of sunny intervals in the afternoon. White light disk blank. CaK activity remains low:

1420 UT. Coronado PST CaK, prime focus, DMK41

The most active looking region on the disk is AR 11068, still in the south east but now approaching the meridian:

1516 UT. Lunt 60mm, B1200 CaK diagonal, 2x barlow, DMK21

1441 UT. Solarscope 60, x2 barlow, DMK21

AR 11069 is now over the limb and AR 11067 in the north west continues to decline:

1442 UT. Solarscope 60, x2 barlow, DMK21

I missed a trick here, I didn't realise the eruptive activity on the limb which is the last remnant of AR 11069 would be so bright so I didn't compose to include it properly!

Here's a closeup of the eruptive prominence:

1431 UT. Solarscope 60, x2 barlow, DMK21

There were also significant prominences on the WSW and SSW limbs

1434 UT. SOlarscope 60, x2 barlow, DMK21

1439 UT. Solarscope 60, x2 barlow, DMK21

but the highlight was the complex quiescent prominence on the north limb

1437 UT. Solarscope 60, x2 barlow, DMK21

Transparency good but with cirrocumulus at times & much drifting altocumulus. Seeing variable, sometimes reasonable but with severe high frequency boiling especially near cloud edges. Temperature 14C, wind NE force 2-3.