SOLAR300 Continuum - AR13089 sunspot with a strange flash

[Laszlo Francsics]

AR13089 sunspot with a small and sudden flash. Can it be a small fler in Ca-K?
Monochrome and color processing.

• 300/1200 uncoated Newtonian

• ASI 174 MM

• 0,5 ms - 4000/400 frames

• Edmund Optics 394/10 nm 25 mm/ZWO Blue (ERF)

• poor seeing - zero wind - through 40% density cirrus clouds

300SOLAR.jpg (34.32 KiB) Viewed 1044 times

Solar_124216_pipp_lapl2_ap2731_Resample20_m3_cr60.jpg (2.63 MiB) Viewed 1044 times

Solar_124216_pipp_lapl2_ap2731_Resample20_m3_cr_ff_60.jpg (1.12 MiB) Viewed 1044 times

The small flash (took about 30 minutes) was visible on the live video and on the raw stack as well.

Solar_124216_pipp_lapl2_ap2731_Resample20_m3_cr60_plakat_vr.jpg (185.6 KiB) Viewed 1044 times

[ffellah]

Great images Lazlo !

Franco

[marktownley]

Top shot! One of our other members of the forum has reported a very similar thing in another active region recently, in white light, maybe these things are more common than we might think...

[Laszlo Francsics]

Hi, thank you for your kind comments!

This flash must be a common phenomenon, however, it was unusall for me.

Laszlo

[Montana]

That's absolutely terrific I have caught one of these before and asked the Kanzelhohe team, they reckoned it was a bright penumbral grain viewtopic.php?t=35468
Like a mini flare.

It is very exciting to see and quite rare but much more common than a true WL flare.



Alexandra