Today’s H-alpha image shows only four of the NASA SDO’s ten active regions – six of which are quite faint. The large prominence today is a large arch along the NW limb.

Below is the corresponding sunspot image.

The prominence cameo appears below.

Today’s H-alpha image shows only four of the NASA SDO’s ten active regions – six of which are quite faint. The large prominence today is a large arch along the NW limb.

Below is the corresponding sunspot image.

The prominence cameo appears below.
