Solar Activity 23 May

[brianb]

Overnight cloud had burned off by breakfast time, though conditions were not as good as yesterday - convection currents causing seeing which was very wobbly at times. No afternoon session as sea fog rolled in.

Generally the Sun's activity is similar to yesterday, though with fewer prominences:

0849 UT. Coronado PST CaK, prime focus, DMK41

0858 UT. Solarscope 60, 0.5x focal reducer, DMK41

White light view of the north east limb, showing a small patch of faculae plus a hint of a pore:

0932 UT. WO FLT 110, Lunt solar wedge, x2 barlow, DMK21

There is a nice filament near the east limb, clearly this would look like a quiescent spike prominence if it was at the limb rather than on the disc:

0913 UT. Solarscope 60, x2 barlow, DMK21

The quiescent prominences at the south east and north west lims remain, though not unchanged:

0906 UT. Solarscope 60, x2 barlow, DMK21

0910 UT. Solarscope 60, x2 barlow, DMK21

Magnetic activity remains evident near the disk centre, where the huge filament departed from:

0905 UT. Solarscope 60, x2 barlow, DMK21

But the main feature is the fully developed active region AR 11072 on the meridian in the southern hemisphere.

0902 UT. Solarscope 60, x2 barlow, DMK21

0921 UT. FLT 110, Lunt B1200 CaK diagonal, x2 barlow, DMK21

0936 UT. FLT 110, Lunt solar wedge, x4 Imagemate, DMK21

Transparency moderate to good, just a trace of haze. Seeing poor with substantial boiling, occasionally very poor. Temperature 23C, wind W force 1 veering N & increasing 2-3 (sea breeze setting in).

[MrJulius]

Superb images, I really like the CalciumK showing the whole sun.

[NickH]

Love em Brian!

Saw that CaK region yesterday, but had some issues imaging it with the modded CaK setup...think I've solved that now though..

[brianb]

Thanks guys!

[astroshot]

Nice consistently high standard Brian.

[moocher]

CaK shots for me again.....superb.

Alan