Wednesday, 12 March 2014

Egg Shaped CaK 12th March

cak-full-disk by Mark Townley
cak-full-disk, a photo by Mark Townley on Flickr.

It was getting pretty close to sunset when I shot this CaK image of the sun resulting in a flattened disk as a result of atmospheric refraction. Despite the low sun the proms still came out in this image, just about, taken with the 40mm ota at f10 with the DMK31 camera.