Saturday, 20 May 2017

CaK Full Disk - 20th May

A very early start to the day to beat the incoming weather.  Got a nice view of the sun in CaK light using the 40mm scope at ~500mm focal length with the home brew CaK filter and the PGR Chameleon 3 camera.  There are a few active regions at the moment - and some spots too, that have survived 3 rotations now.  Activity is very much focused towards the solar equator as we get ever closer to solar minimum.