I thought we might see some chromosphere/prominence activity as 2736 disappeared around the solar limb – but there isn’t much.

AR2736 has developed rapidly, unusual, since we haven’t seen a decent sunspot for a while.

“Spaceweather” says:

“A few days ago, sunspot AR2736 didn’t exist. Now, the rapidly-growing active region stretches across more than 100,000 km of the solar surface and contains multiple dark cores larger than Earth. Moreover, it has a complicated magnetic field that is crackling with C-class solar flares.”

The images are fairly poor due to the extreme acute angle with the double glazing!

Spot AR3726 continues to develop.

According to “Spaceweather”:

“New sunspot AR2736 is growing rapidly in the sun’s northern hemisphere. This morning at 1118 UT, it announced itself with a C4-class solar flare.” 

Here is a fade animation of the AR2735 / AR2736 spot group pre and post this morning’s flare. The earlier image was at 09:38 UT taken with light cloud cover, the later one at 11:40 UT.

Spot AR 2735 and the new very active region.

Animation is a gradual transform from Ha to white light, as if traversing the chromosphere.

Although we are near solar minimum, there was quite a nice selection of solar features this morning. Prominences of various sorts, a filament and some active regions.

Only fleeting glimpses of our nearest star today, between holes in the clouds. However, the “instant availability” of the window-sill observatory enabled these interesting prominences to be imaged.

AR2734 is fading, but there are some prominences.

Spot AR 2734 and other active region.

Animation is a gradual transform from Ha to white light, as if traversing the chromosphere.