Wednesday, 6 April 2016

CaK Full Disk 6th April

It feels like i've been neglecting calcium wavelengths lately, with my attention focused on big guns in Hydrogen Alpha, however today was way too windy for the big scopes and so made perfect opportunity to image smaller scale in CaK - the 40mm at 700mm was pretty much impervious to the buffeting action of the blustery wind.  Things are starting to look really quiet on our star now as we edge closer to solar minimum.  Still, at CaK wavelengths the plage in the chromosphere shows up really well.