The Sun today (2025-10-04)

On a beautiful Saturday afternoon, with a temperature of 27 degrees(!) I decided to image the Sun.

The solar images below were processed using the best 25% of 2,000 frames. Image sequences have been acquired with FireCapture.

Just as I was about to wrap up my solar imaging session (at 2:07 PM EDT), I noticed something unusual on the Sun’s limb: a massive prominence had suddenly emerged. Check out that huge filament around the 4 o’clock position… it spans several times the size of Earth!

Below you can find all the imaging session details.

Date: 2025-10-04 18:02 UT
Location: My backyard in Richmond Hill (ON)
Gain: 57
Exposure: 0.805ms
Scope: Lunt 40mm B600
Mount: SkyWatcher AZ-GTi
Camera: Player-One Mars-M II
Software: FireCapture (best 30% from 1000 frames), AS!4, Autostitch, ImPPG, GIMP