Sunday, 6 August 2017

CaK Full Disk - 6th August

A clear if somewhat hazy morning today meant any solar imaging was going to be limited to the shorter focal lengths.  In the end it was a flat battery on the mount that brought an abrupt end to the session - a timely lesson in preparation!  Still, despite no power I was able to let the solar disk drift across the chip of the PGR Chameleon 3 camera to get this full disk in Calcium light with the 40mm scope at 560mm focal length and the home brew CaK filter.  The large spot associated with AR12670 should still be around for next weekend when it is the annual Solarsphere festival in Builth Wells.