Sunday 31 March 2019

CaK Full Disk and New Active Region 31st March

When I got up this morning the sun was blank, typical of solar minimum. However throughout the day an emerging flux region has rapidly developed into a crackling bipolar active region with 2 rapidly growing sunspots. It will be interesting to see how this develops more in the days ahead. Taken in the near ultraviolet in calcium wavelengths (393nm) with the 40mm f10 scope, 2x Cemax barlow, homebrew CaK filter and the FLIR GH3 ICX814 camera.