Plasma on the Edge - 28th February
There is no double limb or spicule layer as this closeup shows when using a double stack system, with the filaments and surface taking on really quite a 3D appearance. The sun is hinting at a furriness to the surface too. Taken with a quark and PST etalon in series with the PGR Blackfly GigE IMX249 camera running at 4.4m focal length.