Monday, 3 April 2017

AR12644 in CaK Light - 2nd April

I really struggled to get a half decent image of this active region on the limb as the seeing conditions were boiling away in between the passing cumulus clouds and their convective instability.  Never the less, a combination of lucky imaging and 2x2 binning with the PGR Chameleon 3 to get shorter exposure times helped in freezing the poor seeing.  Taken with the 80mm scope at ~3000mm focal length and the home brew CaK filter.