Tuesday, 5 July 2016

A New Spot Rounding The Limb? 4th July

The appearance of proms on the limb on sunday, and a look at the NASA STEREO spacecraft data would indicate that something a little more active was coming around the limb of the sun.  Looking in CaK light often shows sunspots that can be hidden initially in Ha wavelengths and this image certainly hints at a possible spot, but certainly a brighter area of plage.  Will be interesting to see in the days ahead if this is anything worthwhile; personally I think it is a dying or dead active region rather than one developing.  Taken with the Skywatcher ED80 at 60mm aperture, 1500mm focal length with the homebrew CaK filter and the PGR Chameleon 3 USB3 camera.