Posted in Solar Observations, Solar Observations 2005
Tags: active regions, charcoal, filaments, H-alpha, NOAA 10822, NOAA 10830, NOAA 10833, NOAA 10835, prominences, PST, solar sketches, Sun
Posted in Solar Observations, Solar Observations 2005
Tags: active regions, charcoal, ETX70-AT, full disk, H-alpha, NOAA 10826, NOAA 10830, NOAA 10833, PST, solar disk, solar sketches, Sun