24/2/24 What did I see ?

[C6rrules]

Well I’ve been mulling over this for some days . I’ve trawled through some complex papers on umbrae .
 

There were exceptional seeing conditions and at x100 the view was perfection .that allowed me to sit and draw . The fine umbrella filaments were like a set of eyelashes , which I’ve never seen standing alone .

I can only assume that magnetic fields have caused linear cooler lines . Quite magical .

Any thoughts ? Nick.

[IB20]

Excellent drawing. There were plenty of C and m class flares recorded for that AR region on that date and time so perhaps the filaments and brightness were associated with flaring?

[C6rrules]

Could be , from what I gather , flares show as white on Ha.
Just reminded me of iron filing lines produced by a magnet !

clear skies ! Nick

[Stu]

Lovely sketches Nick, not seen anything like that before. Might have a trawl through my solar book and see if they are mentioned.

BTW I miss Cotterless45 😉

[Steve Ward]

They are penumbral filaments Nick , they were very noticable in this lovely large sunspot especially in those fleeting moments of good seeing.

They always remind me of the iris in the eye when they're resolved .

I missed getting close-ups on the 24th but grabbed a few moments of video on the day before and pulled this image from the better one.

 

 

[Stu]

24 minutes ago, Steve Ward said:

They are penumbral filaments Nick , they were very noticable in this lovely large sunspot especially in those fleeting moments of good seeing.

They always remind me of the iris in the eye when they're resolved .

I missed getting close-ups on the 24th but grabbed a few moments of video on the day before and pulled this image from the better one.

 

 

I assumed it was these features Nick was talking about Steve, although I may have misunderstood. I’ve not seen these filaments separated from the umbra like that before.

[Mr Spock]

I haven't got a close up view resembling what I was seeing through the eyepiece, just this snap through the 120mm. The actual view was a lot more detailed. Same day - 24/02/24.

 

[Steve Ward]

Here's the SDO HMI Continuum data from 23rd through 25th .

 

 

 

[shinebug777]

absolutely gorgeous sketching!!

[wookie1965]

Absolutely brilliant sketches really captured alot of detail there. 

@Stu (Cotterless45) could not remember his password lol.