Trestan

flare.observer

18 August 2026 07:34

Large solar prominence from 2024-03-24 ☀️🔭

Trestan

flare.observer

18 August 2026 07:34

My first first-author paper, "SADCat: A Catalog of Supra-Arcade Downflow Events in Solar Flares", is now published in Solar Physics! Dr. Ryan French (@ryanjfrench.bsky.social) and I present a catalog of 178 solar flares with visible SADs as a resource for the broader solar flare community. ☀️ 1/4

Bouphe

bouphe.co.uk

16 August 2026 13:02

🙂‍↕️ hello (pixel 8 pro done ok there)

Bouphe

bouphe.co.uk

02 March 2026 20:48

I've not been very well lately but I'll return when I can. I did see some bats which helped

ESO

eso.org

23 January 2026 14:44

By pure chance, Stefan observed the Sun last Friday with a custom-made telescope. The active region seen here close to the edge of the Sun's disc have now rotated more towards us. A so-called coronal mass ejection coming from this region has caused the ongoing geomagnetic storm. 📹 S. Ströbele/ESO