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.
“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!
*Update – sharpened the picture very slightly in PS ***
Last night was pretty clear for a while so I thought I’d do some prep work so I could get some good images of tonight’s Supermoon (21st March).
Well, as we can all see outside, that’s not going to happen (100% cloud here)
Anyway I got this nice one last night, with the SW 102 and the ZWO 174 camera, stacked in Registax 6 and tweaked slightly in PS
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.
To all you doubters out there, there is an article on this subject in April’s Sky at Night magazine – – -!
The article says “Observing through a closed window is not recommended due to reflections and distortions”
A closed window prevents air currents and that is much better than an open window. If you are in a dark room and the telescope objective is close to the window the “reflections and distortions” are minimised.
Take a look at some of my window-sill images if you don’t believe that!