Sunday, 13 September 2015

CaK Full Disk 10th September

The seeing conditions seemed to be just right when I was imaging in CaK wavelengths as can be seen in this image taken with the 40mm scope at 650mm focal length with the PGR Blackfly and homebrew CaK filter.  I was feeling optimistic so took the shot below with the same barlow combination on the 60mm f10 sope to give me a shade uder 1000mm focal length to take a shot of the suns mid riff to highlight the active regions slightly better: