AR 2579: growing or disappearing??

[Iainp]

According to Spaceweather.com this morning, "sunspot AR2579 is growing rapidly" but from St Neots it looks as if it's disappearing!

Iain 

 

[David Smith]

According to Raben it's growing too. Looked quite impressive in WL and Ca-K this morning. Time will tell. Oh and nice image by the way!

[michael.h.f.wilkinson]

In WL it is almost certainly growing, but the amount of plage activity and filaments masks that in the upper chromosphere.

[Pete Presland]

Still looking good whichever way it's going. 

[Iainp]

35 minutes ago, michael.h.f.wilkinson said:

the amount of plage activity and filaments masks that in the upper chromosphere

Ah thanks, I hadn't thought of that.  I'll have another go at it this afternoon. 

[paulastro]

Very nice image Iain.  AR2579 certainly showed a lot of development since yesterday when I observed early this morning.  I didn't particularly notice it was that much bigger, but it may have grown to some degree.  It certainly showed great detail, despite abysmal seeing. 

[cshahar]

Iain, I found the same thing. Yesterday I had a fantastic session with this AR. Looked for it this morning and it seemed to have dissipated. I ended up doing prom animations instead.

-Charles

[Iainp]

1 hour ago, cshahar said:

I found the same thing

Ah, glad it's not just me then . I revisited it this afternoon and it was almost invisible (in H-Alpha) yet yesterday both spots showed really well. I'd like to see it tomorrow but there's heavy rain, thunder and lightning here now, which is the price we invariably pay in Britain for a day or two of sun 

[johnfosteruk]

I wouldn't know as haven't looked today but nice image anyway Iain.

[petevasey]

I reckon it's fading.  Here are my images from 23rd and 24th. GPCAM2 mono with Quark on TMB105 (650 mm fl). And looking at the Kanzelhöhe Observatory images now, not much left.  It's a very useful resource: https://www.kso.ac.at/index_en.php    And if it's clouded out there, you can generally get an up to date image here: http://halpha.nso.edu/

Cloudy here today so I can't do an image myself to check.

Cheers,

Peter

[Iainp]

That's interesting Peter, thanks for that. Things are clearing up quite nicely here in Cambridgeshire so I'm hoping to get another go today.

Iain 

[Davey-T]

Looked like it was growing in folks WL images not seen anything for myself for a few days.

Dave