Tuesday, 21 May 2019

CaK Full Disk 21st May

Taken with the 40mm f10 scope, along with a 2x cemax barlow, homebrew CaK filter and the FLIR GH3 ICX916M camera.  The sun is pretty much blank all bar a couple of bright points in mid northern latitudes; these may  be a sign of the sub surface jetstream associated with cycle 25.  Maybe?