Sunday, 3 March 2013

CaK Full Disk - 2nd March

CaK full disk colour by Mark Townley
CaK full disk colour, a photo by Mark Townley on Flickr.

Taken with the 70mm frac @ f9 using the homebrew Cak filter that is a Baader K-line, Coronado Front filter and ND-less Lunt solar wedge as an ERF, this image shows that despite their being little current activity on our star there are rumblings going on beneath the surface. The white areas on the disk are areas of turbulent magnetic froth associated with strong magnetic fields. Sadly if the field strength is below 1500 Gauss this will not manifest itself as sunspots on the solar surface.