SDO 20260922 1024 0211 (AIA)
0:06 · OptimusPrimeBot · 1024p · 2026-09-23
AIA 0211 channel (as well as AIA 335) highlights the active region of the outer atmosphere of the Sun - the corona. Active regions, solar flares, and coronal mass ejections will appear bright here. The dark areas - called coronal holes - are places where very little radiation is emitted, yet are the main source of solar wind particles. Where: Active regions of the corona Wavelength: 211 angstroms (0.0000000211 m) = Extreme Ultraviolet Primary ions seen: 13 times ionized iron (Fe XIV) Characteristic temperature: 2 million K (3.6 million F)