Sunday, 5 June 2016

CaK Full Disk - 5th June

I got back just in time this afternoon to grab a quick CaK full disk with the ED60 at 600mm focal length, the home brew CaK filter and the PGR Chameleon 3 (IMX265) camera.  Despite the disk being devoid of spots in white light there was plenty of plage visible at 393nm wavelength.