Monday 2 January 2017

CaK Full Disk - 2nd January

The sun was quite blank in Calcium light today, a couple of brighter areas of plage towards either limb, possibly the one on the left will become an emerging flux region as seemed to be crackling away with a few brighter spots.  The faintest hint of the proms visible too.  Taken with the 40mm scope at 400mm focal length with the homebrew CaK filter and the PGR Chameleon 3 camera.