On February 11, 2018, I captured the basic images (a sequence of 15) of Sunspot #AR2699 for this composite. Mounted on a Manfrotto tripod the equipment included a Canon EOS 60D using 400mm, ND1600 filter, ISO-100, f25, 1/160sec.  I used RegiStax6 to stack 11 images, then enhanced the result with Photoshop CC to produce the inset. Sunspot […]