Friday 15 August 2014

CaK Full Disk; Filaments & Proms - 15th August

None of todays prominences were particularly large, but they were visible around the limb of the sun, as was unusually a filament; this is just to the right of AR12144 and is seen as a small thin arc.  Unknown to me at the time it was in the process of lifting off the suns surface.  The image was taken with the 40mm scope at 700mm focal length with the homebrew CaK filter and DMK31 camera.