Solar Disc in 3 Wavelengths


Mike Garbett

Walsall, West Midlands

HEQ5 Pro, Lunt 60, Baader ceramic wedge, Lunt CaK1200 filter, SolarMax 40, PG Grasshopper 3 camera.

October’s massive sunspot group 2192 – the largest seen for many years, rotates back into view as 2209. It is interesting to compare the structure in White light, Hydrogen alpha and Calcium K-line wavelengths.