14 January 2017 | Full Solar Disk

Solar Disc Gabriel Corban

Credit & copyright: Gabriel Corban

Image Data
  • Location: Bucharest, Romania
  • Camera: Point Grey mono camera
  • Optics: Lunt 60 DS H-alpha
  • Mount: SW NEQ6

Gabriel Corban sent in this super Full Solar Disk image taken with a Lunt Solar scope in H Alpha light. The image shows many Solar phenomena such as Sunspots, Granulation, Prominences and Filaments.

The Sun spots are areas of high magnetic fields, which appear black, as they are at a lower temperature than the surrounding region. Granulation of the surface is similar, in that the convection of lower internal layers in the Sun rise to the surface where the plasma cools, and appears as the darker edges of each grain.

The dark, meandering lines on the surface, are filaments. These are large loops or plasma of Helium and Hydrogen that are anchored to the Suns surface. When seen side on, and extending off the Solar disk, we call these filaments Prominences. The exhibit a loop of plasma off the surface, and are a spectacular sight in a Solar Telescope. They change shape in a manner of minutes, which makes for live dynamic viewing of Solar activity in Solar telescope.

These Prominences can extend to hundreds of thousands of kilometers off the surface and several Earths could fit inside these enormous loops. Should the plasma loop break, we then have a Coronal Mass Ejection (CME).

In Gabriel’s image, there are some Prominences at the top left and bottom right of the disk, but the majority are seen face on, and so appear as the flat 2D filament lines.

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