SDO AIA & HMI Channels

Wavelength / Type Band Type Primary Use
94 EUV (Fe XVIII) Hot flaring regions (~6.3 MK)
131 EUV (Fe VIII/XXI) Flares & hot plasma
171 EUV (Fe IX) Quiet corona, loops (~0.6 MK)
193 EUV (Fe XII/XXIV) Corona & flaring regions
211 EUV (Fe XIV) Active regions (~2 MK)
304 EUV (He II) Chromosphere & prominences
335 EUV (Fe XVI) Hot active regions (~2.5 MK)
1600 UV (C IV + continuum) Transition region
1700 Visible continuum Photosphere
1400 UV (Si IV) Transition region (faint in AIA)
HMI Continuum Visible Light Photospheric intensity (sunspot structure)
HMI Magnetogram Magnetic Field Line-of-sight photospheric magnetism
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